Patent application number | Description | Published |
20090050236 | PLUNGE ROUTER AND KIT - A plunge router and kit are provided. In some aspects, a kit includes a first router base, a second router base, a motor assembly, and a depth adjustment mechanism at least partially supported by the motor assembly. The motor assembly is interchangeably supported by the first and second router bases. The depth adjustment mechanism adjusts a depth of cut of a tool element relative to the router base on which it is supported. The motor assembly may also be inserted into and supported by the first and second router bases along a substantially linear path. In other aspects, a depth of cut of a plunge router is finely adjustable. The depth of cut may also be coarsely adjustable. | 02-26-2009 |
20110197457 | BAND SAW BLADE REMOVAL MECHANISM - A blade removal mechanism is moveable between a first position and a second position for engaging a band saw blade. The blade removal mechanism includes a first member for positioning adjacent a blade-receiving space of the band saw, the first member engageable with the band saw blade when the blade removal mechanism is in the second position. The mechanism also includes an actuator coupled to the first member for transmitting movement to the first member and a biasing member for biasing the actuator and the first member to the first position and away from the band saw blade. | 08-18-2011 |
20110239425 | PEX EXPANDING TOOL - A tool operable to expand an end of a pipe includes a plurality of jaws movable between a closed position and an expanded position and rotatable about a longitudinal axis and a rotation collar rotationally coupled to each of the plurality of jaws. A shuttle is selectively engageable with the rotation collar and is rotatable between a first orientation and a second orientation and a spindle is movable between a first position in which the shuttle is in the first orientation and is disengaged from the rotation collar, a second position in which the shuttle is in the first orientation and is engaged with the rotation collar, and a third position in which the shuttle and the rotation collar are rotated together to the second orientation. The rotation of the rotation collar produces a corresponding rotation of the plurality of jaws while the plurality of jaws is in the closed position. Movement of the spindle to a fourth position moves the plurality of jaws to the expanded position and maintains the engagement of the shuttle and the rotation collar in the second orientation. | 10-06-2011 |
20130032455 | MULTI MOTION SWITCH WITH MULTIPLIER ARM - A power tool having a paddle switch is configured to allow easier actuation of a switch mechanism. The power tool comprises a housing, a support surface disposed within the housing, a switch mechanism having a first position and a second position, a paddle member including an input surface and a hinge pin positioned a distance from the support surface, and a multiplier member pivotally connected to the hinge pin and having a first arm and a second arm. The first arm of the multiplier member extends from the hinge pin along a first longitudinal axis, and the second arm of the multiplier member extends from the hinge pin along a second longitudinal axis that is not parallel to the first longitudinal axis. The second arm is disposed to contact the support surface when force is applied to the input surface, causing rotation of the multiplier member about the hinge pin. The rotation of the hinge pin causes the first arm to contact the switch mechanism and move it from the first position to the second position. | 02-07-2013 |
20130153253 | ROTARY HAMMER - A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The rotary hammer also includes a retainer received within the spindle for selectively securing the striker in an idle position in which it is inhibited from reciprocating within the spindle, and an O-ring positioned between the retainer and the spindle. The O-ring is disposed around an outer peripheral surface of the anvil. The O-ring is compressible in response to the striker assuming the idle position. The compressed O-ring imparts a frictional force on the outer peripheral surface of the anvil to decelerate the anvil. | 06-20-2013 |
20130258645 | AREA LIGHT - A work light includes a housing including a first end portion, a second end portion opposite the first end portion, and a center portion extending between the first end portion and the second end portion. The work light also includes a battery receptacle located on the housing and configured to receive a battery. The work light also includes a light source supported by the housing and a heat sink thermally coupled to the light source. The heat sink includes a contact plate extending through the center portion of the housing and a first leg supported proximate the first end portion. The first leg extends from the contact plate in a direction generally perpendicular to the contact plate. The heat sink also includes a second leg supported proximate the second end portion and extending from the contact plate in a direction generally perpendicular to the contact plate. The heat sink also includes a plurality of fins. Each fin extends from one of the first leg and the second leg. | 10-03-2013 |
20130341831 | PEX EXPANDING TOOL - A tool to expand an end of a pipe includes a plurality of jaws movable between a closed and expanded position and rotatable about a longitudinal axis, and a shuttle movable along the axis between a disengaged position and engaged position wherein the shuttle and the jaws are engaged and rotatable about the axis between a first and second orientation. A spindle moves between a first position in which the shuttle is in the first orientation and is disengaged from the jaws, a second position in which the shuttle is in the first orientation and is engaged with the jaws, and a third position in which the shuttle and jaws are rotated to the second orientation while the jaws are closed. Movement of the spindle to a fourth position moves the jaws to the expanded position and maintains the engagement of the shuttle and the jaws in the second orientation. | 12-26-2013 |
20140043800 | AREA LIGHT - A work light includes a housing including a first end portion, a second end portion opposite the first end portion, and a center portion extending between the first end portion and the second end portion. A battery receptacle is located on the housing and is configured to receive a power tool battery pack having a voltage of at least 18 volts. An LED light source is supported by the housing and is powered by the power tool battery pack and a reflector is positioned adjacent the LED light source and arranged to cooperate with the LED light source to produce light having an intensity at a distance of one meter that is at least 1200 Lux. | 02-13-2014 |
20140116739 | ROTARY HAMMER - A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The rotary hammer also includes a retainer received within the spindle for selectively securing the striker in an idle position in which it is inhibited from reciprocating within the spindle, and an O-ring positioned between the retainer and the spindle. The O-ring is disposed around an outer peripheral surface of the anvil. The O-ring is compressible in response to the striker assuming the idle position. The compressed O-ring imparts a frictional force on the outer peripheral surface of the anvil to decelerate the anvil. | 05-01-2014 |
20140326477 | POWER TOOL INCLUDING A BATTERY PACK ISOLATION SYSTEM - A power tool includes a housing, a motor positioned substantially within the housing, a drive mechanism supported by the housing and coupled to the motor, a battery pack electrically coupled to the motor, and an isolation system. The isolation system includes an interface member positioned substantially within the housing. The interface member receives a portion of the battery pack to electrically couple the battery pack to the motor. The isolation system also includes a plurality of isolators coupled between the housing and the interface member to isolate the battery pack from the housing during operation of the power tool. | 11-06-2014 |
Patent application number | Description | Published |
20120097682 | SEALED, NON-PERMEABLE FUEL TANK FOR SPARK-IGNITION MOTORS - A fuel tank for a spark-ignition motor with a vapor intake port has a tank body having a tank wall enclosing a tank volume. A filler port in a first upper portion of the tank wall establishes a liquid fill-level limit for the tank volume. A vapor dome formed by a second upper portion of the tank wall subtends a vapor space above the liquid fill-level limit. A vapor vent valve is mounted in the vapor dome and is connectable to the vapor intake port. The vapor dome has a shape and size allowing the tank body to tilt from about a horizontal position to about thirty degrees in any direction from the horizontal position before a liquid filling the tank volume to the liquid fill-level limit contacts the vapor vent valve. | 04-26-2012 |
20120102906 | MOWER BAFFLE SYSTEM - A multiblade lawn mower including a mower deck having a plurality of cutting blades rotatably disposed therein. A first baffle is positioned within the mower deck between the cutting blades and a front wall of the mower deck and extends substantially continuously between the sides of the mower deck. A second baffle is positioned in the mower deck rearwardly of the cutting blades. The first and second baffles each include a plurality of arcuate baffle portions which define at least one open throat portion therebetween. The first baffle includes at least first, second and third arcuate portions. A third baffle is positioned within the mower deck and extends from adjacent a discharge opening of the mower deck into a circular path defined by peripheral ends of a cutting blade adjacent the discharge opening. | 05-03-2012 |
20130300095 | TRACTOR WEIGHT TRANSFER MECHANISM - A weight transfer system for a tractor includes a front lift arm pivotably mounted to the tractor and a front accessory mounted to the front lift arm. The front accessory is located forward of a front of the tractor. A mounting bracket is secured to a frame of the tractor. An electric linear actuator includes a forward end and a rear end. The forward end is mounted to a spring and the rear end is mounted to the mounting bracket. The linear actuator is actuable between an extended position and a retracted position. The forward end is spaced a first distance from the front of the tractor in the extended position and a second distance from the front of the tractor in the retracted position. The first distance is less than the second distance. | 11-14-2013 |
20150230404 | DEVICE FOR COLLECTING AND RELEASING DEBRIS - A device comprises a collection bin and a stationary front plate pivotably coupled with the bin via a hinge mechanism. The bin is rotatable relative to the front plate between a first position, wherein the bin's front end is closed by the front plate, and a second position, wherein the front end is spaced from the front plate for releasing debris out of the bin. An actuator is operatively connected to the hinge mechanism, which includes a bar interconnected between the bin and front plate. The bar is attached to the front plate and the bin. Actuator actuation rotates the bar and the bin in an arcuate motion from the first to the second position, and retraction of the actuator returns the bar and bin to the first position. Rotation of the bin defines a center of rotation on the opposite side of the front plate from the bin. | 08-20-2015 |
Patent application number | Description | Published |
20120266726 | HAMMER HEAD AND HANDLE ASSEMBLY - A hammer or other hand tool has a head to which is attached a handle. The handle has a plurality of spring steel rods extending substantially the length of the handle and extending into the head where the rods are affixed by a plate. Spacer plates with holes are positioned at spaced locations along the rods. The rods and spacer plates are encased in a rubber material that forms the outer surface of the handle. The rods and spacer plates at the end of the handle form a reinforced lanyard hole. A collar is formed on the handle adjacent the head. The head of the hammer has angled deflecting pads adjacent the striking faces. A raised rim on the head opposite the handle forms a stand surface to enable the barrel shaped head to stand with the handle projecting upwardly. | 10-25-2012 |
20130127104 | PORTABLE WORK HOLDING DEVICE AND ASSEMBLY - A work holding device includes a first jaw piece having an elongated first connection member for connecting the work holding device to a support. The first connection member defines a first passage. A second jaw piece has an elongated second connection member positionable within the first passage. The second connection member defines a second passage in communication with the first passage. A spindle assembly movably couples the second jaw piece to the first jaw piece. The spindle assembly is configured to move the second jaw piece with respect to the first jaw piece to create a clamping pressure when an object is placed between the first jaw piece and the second jaw piece. | 05-23-2013 |
20140346725 | PORTABLE WORK HOLDING DEVICE AND ASSEMBLY - A work holding device, such as a vice, includes first and second jaws and a spindle connected between them to change the distance between the jaws for holding a work piece. An elongated connection member extends from the first jaw and is shaped to fit into a receiver member of a receiver hitch on a vehicle. Adjustable projections are provided on the elongated connection member for reducing movement of the vice in the hitch. The adjustable projections may be set screws. An end cap is provided on the end of the elongated connection member. The work holding device may be mounted in a receiver member or bracket on a workbench or other work area. | 11-27-2014 |
20150011143 | TOOL REST WITH ANGLE INDICATOR FOR USE WITH BENCH GRINDER - A bench grinder has a tool rest mounted on a bracket and disposed adjacent a grinding wheel of the grinder. The tool rest has a tool rest platform that is connected to the bracket by a pivot connection and that may be secured in different angular positions by a bolt, such as a hand bolt. The bracket end to which the platform is affixed is provided with a cylindrical surface portion marked with angle marks. An opening is provided in the tool rest platform through which the angle marked surface is visible. An indicator line on the tool rest platform aligns to the angle mark to indicate the angle of the platform. | 01-08-2015 |
20150266164 | PORTABLE WORK HOLDING DEVICE AND ASSEMBLY - A work holding device includes a first jaw piece having an elongated first connection member for connecting the work holding device to a support. The first connection member defines a first passage. A second jaw piece has an elongated second connection member positionable within the first passage. The second connection member defines a second passage in communication with the first passage. A spindle assembly movably couples the second jaw piece to the first jaw piece. The spindle assembly is configured to move the second jaw piece with respect to the first jaw piece to create a clamping pressure when an object is placed between the first jaw piece and the second jaw piece. | 09-24-2015 |
Patent application number | Description | Published |
20090271346 | LIBRARY SYNCHRONIZATION BETWEEN DEFINITIONS AND INSTANCES - In an industrial control configuration, various instances can exist that are based upon a definition. A definition can be changed and thus it can be appropriate to alter related instances in accordance with the change. However, changing an instance can cause disruption in other actions even when the change is minor. Therefore, various standards can be used to determine if a change to an instance should be propagated automatically or at another time, such as after an operation. The determination can be based on artificial intelligence techniques, user preference, a defined rule set, user instruction, as well as other standards. | 10-29-2009 |
20090271721 | ORGANIZATIONAL ROLL-UP/DOWN - Information related to an industrial control system can be disclosed graphically on a visual display. To traverse through different system portions, an organizational hierarchy can be used to enable a user to roll down into deeper level or roll up into a higher level. A user can input a choice of a level to view and the level can be disclosed to the user, assuming that the user has appropriate authorization to view the level. | 10-29-2009 |
20090271728 | VISUAL REPRESENTATION MANIPULATION - An industrial control configuration can be disclosed to a user as a specific representation, such as a physical layout of different units of the configuration. A user can seamlessly move between different representations, such as switching from the physical layout to a logical layout. The representations can provide real time information and disclose animations to a user that represent different states of a unit or generally of a layout. | 10-29-2009 |
20120271435 | LIBRARY SYNCHRONIZATION BETWEEN DEFINITIONS AND INSTANCES - In an industrial control configuration, various instances can exist that are based upon a definition. A definition can be changed and thus it can be appropriate to alter related instances in accordance with the change. However, changing an instance can cause disruption in other actions even when the change is minor. Therefore, various standards can be used to determine if a change to an instance should be propagated automatically or at another time, such as after an operation. The determination can be based on artificial intelligence techniques, user preference, a defined rule set, user instruction, as well as other standards. | 10-25-2012 |
20130282153 | LIBRARY SYNCHRONIZATION BETWEEN DEFINITIONS AND INSTANCES - In an industrial control configuration, various instances can exist that are based upon a definition. A definition can be changed and thus it can be appropriate to alter related instances in accordance with the change. However, changing an instance can cause disruption in other actions even when the change is minor. Therefore, various standards can be used to determine if a change to an instance should be propagated automatically or at another time, such as after an operation. The determination can be based on artificial intelligence techniques, user preference, a defined rule set, user instruction, as well as other standards. | 10-24-2013 |
Patent application number | Description | Published |
20160125592 | SYSTEM AND METHOD OF ARRANGING WELDING DEVICE MARKERS - A system includes a welding device, one or more cameras, and a controller coupled to the one or more cameras. The welding device includes a first set of visual markers oriented in a first direction and a second set of visual markers oriented in a second direction. Each set of visual markers includes at least three visual markers. The one or more cameras are configured to observe the first set of visual markers when the first direction is directed toward the one or more cameras, and to observe the second set of visual markers when the second direction is directed toward the one or more cameras. The controller is configured to track a position and an orientation of the welding device based at least in part on detection of a threshold quantity of the first set of visual markers or the threshold quantity of the second set of visual markers. | 05-05-2016 |
20160125593 | SYSTEM AND METHOD OF ACTIVE TORCH MARKER CONTROL - A welding system includes one or more cameras and a controller coupled to the one or more cameras. The one or more cameras are configured to detect a plurality of sets of visual markers of a welding device, where each each set is oriented in a respective marker direction. The controller is configured to determine one or more marker directions of one or more respective sets of visual markers based on a detected set of visual markers, to select one of the sets of visual markers as a tracked set of visual markers based at least in part on a determined marker direction of the tracked set of visual markers, to associate a rigid body model to the tracked set of visual markers, and to determine a position and an orientation of the welding device based on the associated rigid body model of the tracked set of visual markers. | 05-05-2016 |
20160125594 | SYSTEM AND METHOD OF CONTROLLING WELDING SYSTEM CAMERA EXPOSURE AND MARKER ILLUMINATION - A system includes one or more sets of reflective visual markers, a light source configured to emit light, and a controller communicatively coupled to the light source. Each set of reflective visual markers is coupled to a component of a welding system. Each reflective visual marker is configured to reflect the emitted light received from the light source towards one or more cameras. The controller is configured to control illumination settings of the light source based at least in part on a status of the welding system being utilized to perform a live-arc welding operation. | 05-05-2016 |
20160125761 | SYSTEM AND METHOD FOR WELDING TORCH DISPLAY - A method including determining an orientation of a display of a welding torch relative to a joint of a workpiece, displaying, on the display of the welding torch during a welding operation, a graphical representation of a welding parameter in relation to a predetermined threshold range for the welding parameter as a position of the welding torch changes, the orientation of the welding torch changes, a movement of the welding torch changes, or some combination thereof, and rotating the graphical representation of the welding parameter based at least in part on the determined orientation of the display of the welding torch relative to the joint. The graphical representation of the welding parameter is associated with the position of the welding torch relative to the joint, the orientation of the welding torch relative to the joint, the movement of the welding torch relative to the joint, or some combination thereof. | 05-05-2016 |
20160125762 | SYSTEM AND METHOD FOR WELDING SYSTEM CLAMP ASSEMBLY - A system including a base component configured to be detected by one or more cameras of a welding system. The base component includes a thermally insulating layer coupled to the base component, a first set of three or more visual markers coupled to the thermally insulating layer on a first face of the base component, and a cover layer disposed on the thermally insulating layer on at least the first face of the base component. An exterior surface of the cover layer is less reflective of visible light or infrared light than the first set of three or more visual markers. | 05-05-2016 |
Patent application number | Description | Published |
20110118961 | PUSH BUTTON STARTING SYSTEM FOR OUTDOOR POWER EQUIPMENT - A starting system for outdoor power equipment that has a controller and a start button to control the activation of an internal combustion engine. The starting system includes a controller that receives a start signal from a start button. The controller monitors for the presence of an enable device in an enable device receptacle and, upon activation of the start button and the presence of the enable device in the enable device receptacle, the controller provides electric power to the electric load of the power equipment. When the start button is depressed for longer than a minimum engagement period, the controller initiates operation of the engine. If the start button is pressed for less than the minimum engagement period, the controller activates the electric load for an auxiliary period without starting the engine. During engine operation, if the start button is depressed, the controller terminates operation of the engine. | 05-19-2011 |
20110203864 | HOOD ASSEMBLY FOR A LAWN TRACTOR WITH REMOVABLE COWL - A hood assembly for a lawn tractor that includes a removable air intake cowl to prevent debris and rain from entering into the open interior defined by the hood. The air intake cowl is removably mounted to the hood of the lawn tractor. The hood of the lawn tractor includes a series of engine intake openings that allow air to flow onto the internal combustion engine. The cowl is defined by a top wall and a pair of depending sidewalls that each include a series of air inlet openings. The air inlet openings extend generally perpendicular to the top panel of the hood and thus prevent debris and rain from reaching the engine intake openings. | 08-25-2011 |
20120199089 | PUSH BUTTON STARTING SYSTEM FOR OUTDOOR POWER EQUIPMENT - A starting system for outdoor power equipment that has a controller and a start button to control the activation of an internal combustion engine. The starting system includes a controller that receives a start signal from a start button. The controller monitors for the presence of an enable device in an enable device receptacle and, upon activation of the start button and the presence of the enable device in the enable device receptacle, the controller provides electric power to the electric load of the power equipment. When the start button is depressed for longer than a minimum engagement period, the controller initiates operation of the engine. If the start button is pressed for less than the minimum engagement period, the controller activates the electric load for an auxiliary period without starting the engine. During engine operation, if the start button is depressed, the controller terminates operation of the engine. | 08-09-2012 |
20130291508 | ZERO-TURN RADIUS LAWNMOWER WITH SUSPENSION SYSTEM - Some embodiments of the invention provide an independent suspension system coupled to a main-frame of ride-on equipment including a subframe coupled to the main frame with a pivot including a pivot axis. Some embodiments include a transaxle assembly supported on the subframe coupled to a drive wheel, and a power source supported on the main frame coupled to the transaxle assembly. A rider can control the transaxle assembly with a compensated control linkage assembly that can compensate for movement of the subframe. Some embodiments include driven pulleys, idler pulleys and backside idler pulleys supported by the subframe coupled to the power source not supported by the subframe. In some embodiments, the pivot axis resides between the power source and the transaxle assembly. In some embodiments, the drive wheel can be driven by an electric motor supported by the subframe and the power source can be a battery. | 11-07-2013 |
20130291509 | SUSPENSION SYSTEM AND METHOD - Front and rear independent suspension mechanisms accommodating an increased range of motion to better absorb shock originating at the wheels of a riding mower to insulate the operator and reduce stress on the mower chassis and other mechanical components. The front suspension can include a front axle with pivot pockets allowing 360 degree rotation of pivots engaged within the pockets, thereby providing a greater range of absorption of shock entering the front axle at varying angles. The rear suspension can include a vertically pivoting transmission platform, providing for controlled vertical motion in the transmission while the transmission is powered by an engine by way of a belt assembly. | 11-07-2013 |
20130300551 | OBJECT PROXIMITY SYSTEM - An object proximity alert system for an object network includes an object module having a data processing unit; a GPS unit; and a transceiver, the latter both connected to the data processing unit. A first object in the network has the module, such that the data processing unit obtains first object position data from the GPS unit, calculates the speed of the object, and transmits position data using the transceiver to other network objects, the data processing unit calculates the respective positions of the first object with the objects in the network based on the data, and compares the position data against a preset target separation between the first object and the other objects. In the event a separation distance between the first object and another object in the network is less than the target separation, the data processing unit generates an alarm in at least the first object. | 11-14-2013 |
20130312693 | PUSH BUTTON STARTING SYSTEM FOR OUTDOOR POWER EQUIPMENT - A starting system for outdoor power equipment that has a controller and a start button to control the activation of an internal combustion engine. The starting system includes a controller that receives a start signal from a start button. The controller monitors for the presence of an enable device in an enable device receptacle and, upon activation of the start button and the presence of the enable device in the enable device receptacle, the controller provides electric power to the electric load of the power equipment. When the start button is depressed for longer than a minimum engagement period, the controller initiates operation of the engine. If the start button is pressed for less than the minimum engagement period, the controller activates the electric load for an auxiliary period without starting the engine. During engine operation, if the start button is depressed, the controller terminates operation of the engine. | 11-28-2013 |
20140299088 | PUSH BUTTON STARTING SYSTEM FOR OUTDOOR POWER EQUIPMENT - A starting system for outdoor power equipment that has a controller and a start button to control the activation of an internal combustion engine. The starting system includes a controller that receives a start signal from a start button. The controller monitors for the presence of an enable device in an enable device receptacle and, upon activation of the start button and the presence of the enable device in the enable device receptacle, the controller provides electric power to the electric load of the power equipment. When the start button is depressed for longer than a minimum engagement period, the controller initiates operation of the engine. If the start button is pressed for less than the minimum engagement period, the controller activates the electric load for an auxiliary period without starting the engine. During engine operation, if the start button is depressed, the controller terminates operation of the engine. | 10-09-2014 |
20140345555 | PUSH BUTTON STARTING SYSTEM MODULE FOR OUTDOOR POWER EQUIPMENT - A self-contained starting module for outdoor power equipment that has control circuit and a start button. The starting module includes internal control circuit that can be either microprocessor based or analog. The control circuit receives a start signal from a start button of the starting module. The control circuit monitors for the presence of an enable device and, upon activation of the start button and the presence of the enable device, provides electric power to the electric load of the power equipment. When the start button is depressed for longer than a minimum engagement period, the control circuit initiates operation of the engine. If the start button is pressed for less than the minimum engagement period, the control circuit activates the electric load for an auxiliary period without starting the engine. During engine operation, if the start button is depressed, the operation of the engine is terminated. | 11-27-2014 |
20150040531 | ZERO-TURN RADIUS LAWNMOWER WITH SUSPENSION SYSTEM - Some embodiments of the invention provide a suspension system coupled to a main frame of ride-on equipment including a subframe coupled to the main frame with a pivot including a pivot axis. Some embodiments include a transaxle assembly supported on the subframe coupled to a drive wheel, and a power source supported on the main frame coupled to the transaxle assembly. A rider can control the transaxle assembly with a compensated control linkage assembly that can compensate for movement of the subframe. Some embodiments include driven pulleys, idler pulleys and backside idler pulleys supported by the subframe coupled to the power source not supported by the subframe. In some embodiments, the pivot axis resides between the power source and the transaxle assembly. In some embodiments, the drive wheel can be driven by an electric motor supported by the subframe and the power source can be a battery. | 02-12-2015 |