Class / Patent application number | Description | Number of patent applications / Date published |
474112000 | Pulley or guide roll has eccentric mount for shifting or tensioning movement | 27 |
20080268994 | ECCENTRIC BOTTOM BRACKET ASSEMBLY - An eccentric bottom bracket assembly having a body member, at least two wing members, a wedge driver with two wedge members, and at least one spring member altogether forming a tubular, cylindrical assembly to fit within the inner shell of the bottom bracket area of the bicycle frame for adjusting the chain length or tension. The assembly is preferably used for the front and rear bottom brackets of a tandem bicycle for adjusting the chain that is connected to the front and rear driving sprockets. The assembly is also alternatively used in single-rider bicycles and other bicycles with the need for adjusting chain tension. The assembly allows for the wing members and the body member to circumferentially and outwardly expand or inwardly retract by co-acting with the rotation of the wedge driver which laterally displaces the wedge members in a parallel direction relative to the longitudinal axis of the body member. | 10-30-2008 |
20080287233 | Tightener for a Belt Drive Operating in the Presence of Oil - A tightener ( | 11-20-2008 |
20090176609 | TIMING BELT TENSIONER WITH STOPS CONTROLLED BY BRAKE DEVICE - A tensioner having a backstop device which allows free rotation of the pivot arm in a first direction but controls rotation of the pivot arm in a second, opposite direction. The backstop device permits a predetermined, limited amount of free rotation in the second direction and thereafter, employs a braking device to prevent rotation in the second direction if the torque that acts on the pivot art is less than a predetermined threshold. | 07-09-2009 |
20090186727 | Tensioner - A tensioner comprising a base, a pivot arm pivotally engaged with the base, a pulley journalled to the pivot arm, the pulley mounted to the inner race of a bearing, the outer race mounted to the pivot arm, a spring engaged between the pivot arm and a damping mechanism, the damping mechanism frictionally engaged with the pivot arm, the damping mechanism slidingly engaged with the base between at least two predetermined mechanically fixable positions, and the pivot arm, spring and damping mechanism contained within a pulley perimeter. | 07-23-2009 |
20090209379 | LATHE BELT TENSION DESIGNS - A belt tensioning device is provided for an apparatus such as a lathe which includes a centering member adapted to be attached to a workpiece and is supported for rotation about an axis. A motor is spaced from the centering member and is supported by a pivot member. A drive pulley is attached to the motor and a driven pulley is attached to the centering member. A belt is engaged between the drive pulley and the driven pulley for transmitting driving torque from the motor to the centering member. A belt tensioning device is provided for moving the pivot member between a first position wherein the belt is tensioned between the drive and driven pulleys and a second position wherein the belt is loosened between the drive and driven pulleys. | 08-20-2009 |
20090239693 | Tensioner for a Drive Belt of a Motor Vehicle - Tensioner for a belt drive, including a rigid element rotatably connected around a first axis and a couple of idle pulleys supported by a rigid element on opposing parts of axis and adapted to cooperate with respective sections of a belt of belt drive. The tensioner also includes a mobile element hinged to a second fixed axis carrying the first axis. | 09-24-2009 |
20090258738 | TENSION DEVICE OF BICYCLE DERAILLEUR - A tension device for a drive chain of a bicycle including a first pulley having a first rotational axis swingable around a swing center, and a second pulley having a second rotational axis movable along a movable direction to change a distance between the first rotational axis and the second rotational axis. The first pulley is arranged to be forced around the swing center to apply tension to the drive chain, and the second pulley is arranged to be forced along the moving direction to apply tension to the drive chain. | 10-15-2009 |
20090270210 | In-Line Belt Driven Tille Drive Clutch - A clutching mechanism ( | 10-29-2009 |
20090291791 | TENSIONER ASSEMBLY WITH SEALED PULLEY - A pulley assembly operable in connection with a tensioner assembly is provided for tensioning a belt. The pulley assembly includes one or more elements for sealing the pulley to protect the pulley assembly in harsh environments. For instance, the pulley assembly may include one or more shields for protecting the pulley from contaminants entering the interior of the pulley assembly that can lead to premature failure. | 11-26-2009 |
20100113199 | TOOTHED BELT TENSIONER WITH INCREASED DAMPING FORCE - A mechanical tensioning system ( | 05-06-2010 |
20100144473 | Tensioner - A tensioner comprising a base, an arm pivotally engaged with the base, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the base comprising a cantilever leaf spring, a first friction disk operationally disposed between the cantilever leaf spring and the arm, the cantilever leaf spring biasing the first friction disk into frictional contact with the arm, the first friction disk rotationally fixed with respect to the base, a second friction disk rotationally fixed with respect to the base, a separator member disposed between the first friction disk and the second friction disk, the first friction disk and the second friction disk each having a wet coefficient of friction of approximately 0.12, and the separator member rotationally fixed with respect to the arm. | 06-10-2010 |
20100190594 | PULLEY TENSIONER FOR AN OIL WET BELT DRIVE - A tensioner ( | 07-29-2010 |
20100190595 | ECCENTRIC TENSIONING DEVICE - An eccentric tensioning device for tensioning a traction means is provided. The eccentric tensioning device includes a track roller device having a running disk and a rolling bearing, a work eccentric for supporting the track roller device, the work eccentric being supported on an adjustment eccentric, a single torsion spring for pretensioning the work eccentric, and a fixing device for securing the work eccentric in a mounting position in which the torsion spring is located in a pretensioned state. The fixing device is positionable on a flange surface upon which the eccentric tensioning device is mountable during attachment, in which the running disk is forced radially relative to the rotating axis of the rolling bearing against the associated traction means under effect of the work eccentric, and a free switching path is traversed through an axial play being overcome against an axial force applied solely by the torsion spring. | 07-29-2010 |
20110045929 | PULLEY TENSIONER FOR A BELT DRIVE FOR USE IN CONTACT WITH OIL - A tensioner for a belt drive comprises a pivot defining an axis, a support hinged to the axis and defining a guiding surface preferably having a circular profile, an elastic element for actuating the support and a crown pulley eccentric with respect to the axis and surrounding the guiding surface. The tensioner further comprises a journal bearing to support the pulley on the guiding surface. | 02-24-2011 |
20120190488 | POWER TOOL WITH A TENSIONING DEVICE FOR A BELT - A power tool and a belt pulley of a belt drive for a power tool is provided with a tool driven by a motor by way of a belt drive, whereby the belt drive has a belt pulley rotating about a drive axle on the drive side and a belt pulley rotating about a tool axle on the tool side, and whereby a belt can be tensioned over the belt pulleys. At least one of the belt pulleys can be moved into an eccentric position in relation to its holding axle, with an assembly element being provided, with which the belt pulley can be returned into the concentric position in relation to the axle. | 07-26-2012 |
20130165283 | Eccentric Bottom Bracket Assembly - A bottom bracket assembly of a bicycle that cooperates in an eccentric or off-center manner with a bottom bracket shell of a bicycle frame. The eccentric bottom bracket assembly has a cylindrical insert with an off-centered opening for receiving a spindle that connects to cranks of the crankset. Rotating the cylindrical insert repositions the off-centered opening relative to at least the longitudinal direction of the bicycle and thus can be used to adjust the tension in the flexible drive member of the bicycle. A worm gear arrangement provides controlled manipulation of the position of the insert relative to the bicycle frame. | 06-27-2013 |
20130165284 | ECCENTRIC IDLER PULLEY - An idler pulley ( | 06-27-2013 |
20130196802 | CLEANER HEAD FOR A CLEANING APPLIANCE - A cleaner head includes a drive mechanism connecting a drive means to a rotatable brush member. The drive mechanism comprises an input drive member connected to the drive means, an output drive member connected to the rotatable brush member, and a flexible drive element extending therebetween. The drive mechanism is provided with an adjustment mechanism operable to vary the distance between the input and output drive members in order to vary the tension of the flexible drive element. The adjustment mechanism is movable in a first direction from a first position in which the flexible drive element has a relatively low tension through a plurality of further positions which increases the tension in the flexible drive element. The adjustment mechanism is lockable in a selected one of the plurality of further positions against movement in a direction opposite to the first direction. | 08-01-2013 |
20130324338 | BELT ADJUSTING DEVICE OF PRINTER - A belt adjusting device of a printer includes a bracket, a base, a driving device, and a resisting member. The bracket includes a bottom wall and a belt placed on the bottom wall. The belt is loop-shaped. The base is slidably mounted to the bracket. The driving device is mounted to the base and includes an eccentric device engaging with the belt. The resisting member resists the driving device to enable the eccentric device to rotate to adjust the belt when the base slides relative to the bracket. | 12-05-2013 |
20140073467 | BELT DRIVE FOR A MOTOR-DRIVEN TOOL - In order to provide a belt drive for a motor-driven tool with a first, drive-side belt pulley, a second, tool-side belt pulley and a belt that can be tensioned over the first and the second belt pulley, that is characterised by being easier to use, it is proposed that a cam, rigidly connected with a shaft, is arranged in the first or second belt pulley, whereby during a rotational movement of the shaft the belt pulley can be moved from an eccentric arrangement in relation to the shaft into a concentric arrangement by way of a translational movement and a rotational movement of the belt pulley. | 03-13-2014 |
20140113755 | TENSIONER - A tensioner comprising a base, a shaft connected to the base, an eccentric adjuster coaxially engaged with the shaft, an arm pivotally engaged with the shaft, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the arm comprising a first receiving portion and a second receiving portion disposed axially opposite from the first receiving portion, a first damping member disposed between the arm and the base, the first damping member frictionally engaged with the base and engaged with first receiving portion, a second damping member disposed between the arm and the eccentric adjuster having a member engaged with the second receiving portion, and a biasing member disposed between the first damping member and the arm for applying a normal force to the first damping member and to the second damping member. | 04-24-2014 |
20140194236 | POWER TRANSMISSION DEVICE - A power transmission device has two roller members which are rotatable on their own axes and the outer peripheral portions of which are pressed against a wire member tightly stretched between two pulley members, a rotary gear which is rotatable around a revolution axial center of the roller members integrally with a supporting member which supports the roller members, a spring worm meshed with the rotary gear, and an actuator which controls the rotation amount of the spring worm. | 07-10-2014 |
20140235387 | ACTIVE TENSIONING DEVICE - An active tensioning device for a looped cord of a window covering system. The active tensioning device comprises a body having a channel configured to receive a section of the looped cord therein. The channel has a first wall allowing the section of the looped cord to slide thereon and a second wall having at least one cord engaging member engageable with the section of the looped cord. The active tensioning device is pivotable about the looped cord between an inoperative configuration where the looped cord contacts the second wall of the channel and an operative configuration where the looped cord contacts the first wall of the channel. The active tensioning device is balanced to be urged towards the inoperative configuration by gravity. | 08-21-2014 |
20150119176 | TENSIONER - A tensioner comprising a base, a shaft connected to the base, an eccentric adjuster coaxially engaged with the shaft, an arm pivotally engaged with the shaft, a pulley journalled to the arm, a torsion spring engaged between the arm and the base, the arm comprising a first receiving portion and a second receiving portion disposed axially opposite from the first receiving portion, a first damping member disposed between the arm and the base, the first damping member frictionally engaged with the base and engaged with first receiving portion, a second damping member disposed between the arm and the eccentric adjuster having a member engaged with the second receiving portion, and a biasing member disposed between the first damping member and the arm for applying a normal force to the first damping member and to the second damping member. | 04-30-2015 |
20150300462 | TENSIONER - A tensioner comprising a base, a first pivot arm pivotally engaged to the base, a first pulley journalled to the first pivot arm, a second pivot arm pivotally engaged to the base, a second pulley journalled to the second pivot arm, a flexible tensile member having a toothed engagement with the first pivot arm and a toothed engagement with the second pivot arm whereby the first pivot arm and the second pivot arm move in a coordinated manner, and a tensioner assembly pivotally engaged to the base and engaged with the flexible tensile member. | 10-22-2015 |
20160017963 | TENSIONING DEVICE FOR A TRACTION MEMBER - A tensioning device for a traction member, such as a belt, for an internal combustion engine, the tension device comprising a pulley rotatably mounted on an eccentric hub also rotatably mounted on a shaft. One end of the shaft comprises a shoulder against which abuts a plate for attaching the device onto the internal combustion engine. The tensioning device further comprises a torsions spring mounted around a tubular portion of the hub extending along a longitudinal direction of the hub between the hub and the attachment plate. The tensioning device also comprising a spring holder interposed between the spring and the attachment plate. An end turn of the spring is attached around an axial portion of the spring holder. | 01-21-2016 |
20160377152 | TENSION ROLLER DEVICE - The tension roller device provides a support shaft, a securing plate that is fixed on the support shaft, an eccentric hub that is free to rotate relative to the shaft, and a spring that is arranged axially between the eccentric hub and the securing plate. The support shaft includes a stop surface, against which the securing plate is axially supported, and which is delimited radially on the outer side by a circular outer edge. At least one opening is formed in the securing plate, in order to delimit a tongue for radial centering of the spring. The opening is situated radially on the outer side relative to the circular outer edge of the stop surface of the support shaft. | 12-29-2016 |