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Norbert Hahn

Norbert Hahn, Franklin, WI US

Patent application numberDescriptionPublished
20080313826STATIONARY DOCK LEVELER - The subject matter of the invention is a stationary dock leveler with a ramp (12-25-2008
20090194375MANUAL WHEEL CHOCKS WITH AUTOMATIC POSITIVE LOCKING - A wheel restraint includes a wheel chock that is manually movable between a retracted position clear of a wheel of a vehicle at a loading dock and an operative position to block the path of the wheel. In the retracted position, the chock can be manually moved freely along a track that is mounted to a driveway of the dock. When the chock is manually moved from its retracted position to its operative position, a locking feature automatically restricts the movement of the chock relative to the track. When the chock is manually moved back to its retracted position, the locking feature automatically disengages. Although the wheel chock is connected to a track, most of the force exerted by the wheel against the chock is transmitted directly from the chock to the driveway.08-06-2009
20090194376MANUAL WHEEL CHOCKS WITH ENHANCED BRACING UPON DEPLOYMENT - An example wheel restraint includes a wheel chock that is manually movable between a retracted or release position clear of a wheel of a vehicle at a loading dock and an operative position to block the path of the wheel. In the release position, the chock can be manually moved freely along a track that is mounted to a driveway of the dock. When the chock is manually moved from its release position to its operative position, a locking feature automatically restricts the movement of the chock relative to the track. When the chock is manually moved back to its release position, the locking feature automatically disengages. Although the wheel chock is connected to a track, much of the force exerted by the wheel against the chock can be transmitted directly from the chock to the driveway.08-06-2009
20090283999SUPPORT FRAME VEHICLE RESTRAINTS - A vehicle restraint restrains a vehicle at a loading dock by engaging a rail that is part of the vehicle's support frame, wherein the rail is normally used for adjusting the position of the vehicle's rear wheels. In a preferred embodiment, the restraint includes an adjustable-length arm attachable between the vehicle and the loading dock. The arm includes a retractable or removable pin that engages one of a series of holes in the rail or releasably engages some feature of the loading dock. In some examples, the restraint clamps onto the rail, particularly if the rail has no available open holes for a pin to be inserted. In some cases, the restraint also provides the vehicle with vertical support.11-19-2009
20100170754MANUAL WHEEL CHOCKS WITH ENHANCED BRACING UPON DEPLOYMENT - An example wheel restraint includes a wheel chock that is manually movable between a retracted or release position clear of a wheel of a vehicle at a loading dock and an operative position to block the path of the wheel. In the release position, the chock can be manually moved freely along a track that is mounted to a driveway of the dock. When the chock is manually moved from its release position to its operative position, a locking feature automatically restricts the movement of the chock relative to the track. When the chock is manually moved back to its release position, the locking feature automatically disengages. Although the wheel chock is connected to a track, much of the force exerted by the wheel against the chock can be transmitted directly from the chock to the driveway.07-08-2010
20100260586WHEEL RESTRAINT SYSTEMS - A wheel restraint for restraining a vehicle at a loading dock includes a wheel chock suspended from a tether. The tether hangs from an overhead beam such that the wheel chock can be swung down and underneath the vehicle and placed directly in front of a wheel of the vehicle. A pin can be used to help hold the chock to an anchor that is fastened to a driveway of the loading dock. The orientation of the pin and the anchor holes in which the pin can be selectively inserted prevents the chock from tipping back and makes the restraint more tolerant of dirt, ice and other contaminants. In some examples, an offset between the beam and the wheel results in the tether urging the chock toward the anchor.10-14-2010
20110075441LIGHT FIXTURES FOR DOORWAYS AND OTHER AREAS - Example light fixtures include one or more light transmitting illuminated rods that emit a series or array of discrete spots of light. Some example light fixtures disclosed herein include optical features that provide an intriguing, attention-getting affect that can be useful particularly in alerting personnel of certain conditions at a doorway of a truck loading dock. In some examples, the light transmitting rods are mechanically coupled to a housing that contains an LED light source. The mechanical coupling allows the illuminated rods to be readily replaced without disrupting with the operation or wiring of the light source. Some example light fixtures illuminate the cargo bay of a vehicle at the loading dock.03-31-2011
20110176896SUPPORT FRAME VEHICLE RESTRAINTS - Restraints for restraining a vehicle at a loading dock are described. An example restraint described herein includes a brace movable between a holding position and a release position. A first portion of the brace engages a supporting portion of the vehicle and a second portion of the brace engages a non-movable location at the loading dock to restrain the vehicle relative to the loading dock when the brace is in the holding position. For the holding position, the first portion of the brace moves in one direction underneath the vehicle to engage the supporting portion and the second portion moves in a second direction underneath the vehicle to engage the non-movable location. The first and second portions retract to allow the vehicle to move relative to the loading dock when the brace is in the release position07-21-2011
20110243693DOWNWARDLY INSERTABLE VEHICLE RESTRAINTS - Example vehicle restraints engage various features of a vehicle to restrain the vehicle at a loading dock. Some example restraints reach over and around a vehicle's rear impact guard. Some example restraints engage a hole or opening in a vehicle bed. Some example restraints are a combination bumper and blocking member. Some example restraints are a combination blocking member and a dock leveler lip.10-06-2011
20110243694VEHICLE BRACES HAVING A TRACK-CLAMPING MECHANISM - An example of a vehicle brace for use at a loading dock includes a vehicle support member that can travel to various heights along a vertical track. The support member exerts a substantial but limited resistive force up against the underside of a vehicle's rear impact guard to mitigate bouncing of the vehicle's truck or trailer bed as the vehicle is being loaded and/or unloaded of its cargo. Of particular interest in some examples is a rather short brake actuator mounted at an angle to create an inclined binding clamp action, the actuator being installed to travel with the vehicle support member, and the track having an inclined braking surface so that the brake's clamping force does not rely on friction alone, all of which provides for a compact vehicle brace installable as a self-contained unit and operated without having to rely on structural support from a driveway surface.10-06-2011

Patent applications by Norbert Hahn, Franklin, WI US

Norbert Hahn, Hunstetten-Limbach DE

Patent application numberDescriptionPublished
20090188083HANDLE FOR POWER TOOL - A handle housing for a handle for a power tool, the handle housing having a first housing part; and a second housing part adapted to be mounted to the first housing part and subjected to a bending stress when mounted to said first housing part, the said first and second housing parts defining a chamber for accommodating one or more components of the power tool.07-30-2009
20090188691HANDLE ASSEMBLY FOR POWER TOOL - A handle assembly for a power tool is disclosed. The handle assembly has a handle (07-30-2009
20090188692MOUNTING ASSEMBLY FOR HANDLE FOR POWER TOOL - A mounting assembly for moveably mounting a handle of a power tool to a housing of the power tool is disclosed. The mounting assembly has a metal bar (07-30-2009
20090236111HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle pivotally mounted on the body about an axis; a vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool 09-24-2009
20090236112HAMMER - A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle, comprising a grip portion, pivotally mounted on the body about an axis of pivot; a first vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations transmitted from the body to the handle; a motor mounted within the body; a hammer mechanism mounted in the body, capable of being driven by the motor when the motor is activated, the hammer mechanism, when driven, imparting impacts onto a cutting tool when held by the tool holder; wherein at least the grip portion of the handle is also slideably mounted on the body so that the position of the grip portion can be linearly moved relative to the body; and there is further provided a second vibration dampener located between the grip portion and the body which reduces the amount of linear vibrations transmitted from the body to the grip portion.09-24-2009
20100012339HANDLE DAMPING SYSTEM - A power tool, particularly a hammer drill, comprising; a body (01-21-2010
20110142557DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening which, in use, locates against a work piece to create a chamber; a single aperture located on the housing through which air can pass; at least one first air passage formed within the housing which connects between the aperture and the drill passage and which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which connects between the recess and the at least one first air passage inside of the housing which enables air to pass from the recess the aperture wherein there is further provided a connection collar which is connected to the aperture via a flexible tube only; wherein the aperture has a longitudinal axis, and the drill collar has a longitudinal axis, the longitudinal axis of the aperture being orientated substantially perpendicularly to the longitudinal axis of the drill collar.06-16-2011
20110142558DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing with a drill collar attached to the housing and having a drill passage formed through the housing. A recess formed by the walls of the housing has a planar opening and a seal is attached to the walls of the recess which surrounds the planar opening and which, in use, locates against a work piece to create an air tight seal between the housing and the work piece. The housing also has an aperture located thereon through which air can pass; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; characterized in that the seal comprises a base which is attached to the walls of the recess and a flange which is attached to and extends from the base at an oblique angle to the plane of the opening.06-16-2011
20110142559DUST EXTRACTOR - A suction cup dust extractor for a drill comprising: a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; an single aperture located on the housing through which air can pass; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which enables air to pass from the recess and the aperture; characterized in that the drill collar comprises a plurality of markers which are located around its periphery06-16-2011
20110142560DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; a recess formed by the walls of the housing having an opening and which, in use, locates against a work piece to create a chamber; a single aperture located on the housing through which air can pass; at least one first air passage formed by the walls of the housing which connects between the drill and the aperture to enable air to pass from the drill passage to the aperture; and at least one second air passage formed within the housing which connects between the recess and the at least one first air passage and which enables air to pass from the recess to the aperture via a part of the at least one first air passage; characterized in that there is a dividing wall which forms both one of the walls of the recess and one of the walls of the first passage, the at least one second passage being an aperture formed through that wall.06-16-2011
20110142561DUST EXTRACTOR - A suction cup dust extractor for a drill having a housing; a drill collar attached to the housing, having a drill passage formed through it; an aperture located on the housing through which air can be sucked out by a suction device; a recess formed by the walls of the housing having an opening which, in use, locates against a work piece to create a chamber; at least one first air passage formed within the housing which enables air to pass from the drill passage to the aperture; at least one second air passage formed within the housing which enables air to pass from the recess to the aperture; and a manually operable valve mechanism mounted in the housing which is connected to the recess and which, when operated, allows air surrounding the housing to freely enter the recess when its opening is located against a work piece; characterized in that the housing further comprises a hand grip), the valve mechanism being mounted, at least in part, inside of the hand grip.06-16-2011

Patent applications by Norbert Hahn, Hunstetten-Limbach DE

Norbert Hahn, Huenstetten-Limbach DE

Patent application numberDescriptionPublished
20090049651Vibration Dampening Mechanism For Power Tool - A powered hammer includes a body in which is disposed a motor and a hammer mechanism driven by the motor when the motor is activated. A tool holder is coupled to a front portion of the body and which is capable of holding a cutting tool. The hammer mechanism, when driven by the motor, is capable of imparting impacts to a cutting tool, when held by the tool holder. A handle is moveably coupled to a rear portion of the body for movement toward and away from the body along a tool axis of the tool holder. The handle includes a grip portion and first and second end connection sections coupled to opposite end portions of the grip portion. The first and second end connection sections are slideably mounted on first and second arms that project rearward from the body. A movement control mechanism is mounted inside the handle and coupled to the first and second arms and the handle. The movement control mechanism is configured to ensure that the two end connection sections move toward and away from the body in unison to inhibit angular movement of the grip portion relative to the body. A damping element disposed between the handle and the body to reduce vibration transferred from the body to the rear handle.02-26-2009

Norbert Hahn, Frechen DE

Patent application numberDescriptionPublished
20110306728POLYMER POLYOLS PREPARED FROM NITRILE-FREE AZO-INITIATORS - This invention relates to nitrile-free azo initiators for the preparation of polymer polyols and to the polymer polyols prepared therefrom. These novel polymer polyols comprise a base polyol, a preformed stabilizer and at least one ethylenically unsaturated monomer, in the presence of at least one free-radical polymerization initiator comprising as azo compound that is free of nitrile groups, and optionally, a polymer control agent. The process of preparing these polymer polyols is a continuous process comprising free-radically polymerizing a base polyol, a preformed stabilizer, and at least one ethylenically unsaturated monomer, in the presence of at least one free-radical polymerization initiator comprising as azo compound that is free of nitrile groups, and optionally, a polymer control agent.12-15-2011