Entries |
Document | Title | Date |
20080207367 | TENSIONING DEVICE FOR A BELT DRIVE - A tensioning device for a belt drive is provided, with a lever arm, which is rotatably supported on a base plate with a damping mechanism and on which a pulley and a spring element can be or are mounted. An arrangement is provided to prevent automatic loosening of the screw connection between the lever arm ( | 08-28-2008 |
20080287234 | Belt Drive - A belt drive ( | 11-20-2008 |
20080300077 | Deflection Pulley for a Traction Means - A tensioning device for a traction element, such as a belt, band or chain, is provided having a tensioning arm ( | 12-04-2008 |
20090111630 | Belt tension adjusting device of vehicle alternator - The present invention provides, as one aspect, a belt tension adjusting device of a vehicle alternator. The device comprises an adjust bar that has an elongated hole having a rack configuration, one end of the adjust bar being fixed; a belt tension adjusting gear that has a through-hole at the center thereof, and has a gear-shape member corresponding to the rack configuration of the elongated hole at the outer circumference thereof; and a fixing bolt that fixes the adjust bar and the belt tension adjusting gear with an adjust stay of the vehicle alternator in a state where the belt tension adjusting gear is passed through the elongated hole; wherein tension of a belt stretched around a pulley of the vehicle alternator is adjusted by rotating the belt tension adjusting gear to move the adjust stay in a longitudinal direction of the elongated hole. | 04-30-2009 |
20090197724 | CAPTIVE FASTENER APPARATUS FOR CHAIN GUIDE OR TENSIONER ARM - A fixed or adjustable chain guide includes a captured shoulder bolt fastener. An adjustable chain guide such as a chain tensioner arm assembly includes a tensioner arm with a pivot bore defined about a pivot axis. The pivot bore includes an inner end opening through a rear face of the tensioner arm and an outer end opening through a front face of the tensioner arm. The tensioner arm further includes at least one resilient fastener retaining tab located adjacent the pivot bore. The shoulder bolt extends through the pivot bore and is engaged by the at least one resilient fastener retaining tab, and the at least one fastener retaining tab inhibits separation of the fastener from the tensioner arm. The fastener preferably includes an annular groove or other recess to be engaged by the one or more fastener retaining tabs in order to permit the tensioner arm to rotate relative to the fastener. New shoulder bolt fasteners are also defined, each including a shoulder region having at least one retaining feature such as an annular groove adapted to be engaged by a projecting portion of an associated component for axially capturing the fastener to the associated component while permitting rotation of the associated component relative to the fastener. | 08-06-2009 |
20090264233 | NON-PROFILED RUNNING SURFACE OF A BELT PULLEY - The invention relates to an assembly drive or traction mechanism drive, which is designed as a belt drive, of an internal combustion engine, with one tensioning roller and/or one deflecting roller which encloses in each case one belt pulley. In the operating state of the belt pulley, a traction mechanism, which is designed as a V-ribbed belt, is guided on the running surface of the belt pulley. Here, the belt pulley of the deflecting roller has a smooth running surface against which the V-ribbed belt is supported with the profiled inner side. | 10-22-2009 |
20100081529 | TENSIONING AND DAMPING DEVICE FOR TRACTION-MECHANISM DRIVES - A tensioning device for a traction mechanism drive for a belt drive that is incorporated in an internal combustion engine, in order to drive components of the engine or installed accessories. The tensioning device has a construction that is advantageous under production and construction viewpoints, by a high degree of robustness, and also by an advantageous mechanical operating behavior. The tensioning device includes a base part, a swivel arm, a torsion spring with a first winding end section that is allocated to the swivel arm and a second winding section that is allocated to the base part for applying a pivoting moment acting between the base part and the swivel arm and forcing the swivel arm in a tensioning direction, and a damping device for generating a damping force that counteracts a pivoting of the swivel arm directed against the tensioning direction. This damping device includes a first friction surface element that is arranged in a region of the winding end section of the torsion spring allocated to the swivel arm, and forms a friction surface that is used for applying friction force and that sits on a counter friction surface. In the region of the second winding end of the torsion spring for the base part, there is a second friction surface element that forms a friction surface that sits on a counter friction surface, and the counter friction surface is formed by a friction surface structure that can pivot together with the swivel arm. | 04-01-2010 |
20100105507 | DRIVE ARRANGEMENT - A drive arrangement ( | 04-29-2010 |
20100113200 | BICYCLE CHAIN TENSIONER - A bicycle chain tensioner is provided with a bracket, a tensioner arm, a securing position adjustment mechanism and a chain engaging member. The bracket has a bicycle axle mounting portion and an arm attachment portion. The tensioner arm is adjustably secured to the arm attachment portion of the bracket. The securing position adjustment mechanism selectively fixes the tensioner arm with respect to the bracket in one of a plurality of the securing positions. The chain engaging member is attached to the tensioner arm. | 05-06-2010 |
20110015015 | MECHANICAL TENSIONER WITH DAMPING MECHANISM - A mechanical tensioner that includes a pulley arm with a tension pulley for a tension element drive of an internal combustion engine. The pulley arm is mounted to a mounting base that is fixedly attached to the engine. A spring that functions in compression and torsion is located about a pivot axis on the mounting base, with one end connected to the pulley arm and the other end attached to the mounting base. The spring provides torsion to the pulley arm to maintain tension on the tension element, and is also compressed between a mounting flange of the pulley arm and a support flange on the mounting base to transmit an axial force between the pulley arm and an outer hub that is fixed to the mounting base. A shaped bush which functions at least as a damping element, and can also function as a bearing, is located in the space between the outer hub and the pulley arm. The outer surface of the outer hub, the bush and the inner portion of the pulley arm are in the shape of a tractrix pseudosphere to provide increased life and reduced wear. | 01-20-2011 |
20110070984 | ACCESSORY DRIVE TENSIONER ASSEMBLY - An accessory drive tensioner assembly may include a bracket assembly, a fastener and a tensioner hub. The bracket assembly may include first and second bearings axially spaced from one another. The fastener may extend through the first and second bearings to rotationally couple the bracket assembly to an engine structure and may define a rotational axis for the bracket assembly. The tensioner hub may be coupled to the bracket assembly and may be located axially between the first and second bearings. | 03-24-2011 |
20110081999 | BELT DRIVE SYSTEM ASSEMBLY AND TENSION APPARATUS - A belt assembly and adjustment mechanism for a belt drive system including a belt. The belt assembly and adjustment mechanism includes a first bracket that is attachable to a first portion of the belt drive system, and a second bracket that is attachable to a second portion of the belt drive system. The second portion is different from the first portion. The mechanism also includes a belt drive system component that is positioned between the first bracket and the second bracket. The component is pivotally coupled to the first bracket on one side of the component and is pivotally coupled to the second bracket on another side of the component. The component is further slidably coupled to one of the first bracket and the second bracket such that the component is movable between a first orientation at which the belt is configured to be tensioned and a second orientation at which the belt is configured to be installed on the component. | 04-07-2011 |
20110224039 | PROCESS FOR PRODUCING A SLIDING BEARING LOCATION IN A CAST COMPONENT AND CAST COMPONENT ITSELF - A process for producing a sliding bearing bush in a cast component of lightweight metal, preferably a tensioning lever of a belt tensioner. The process includes the following steps: a die, which forms the seat for a sliding bearing bush to be pressed in and has radially outer groove drawing noses, is inserted into a lightweight metal pressure die-casting die. After the liquid lightweight metal has been injected into the lightweight metal pressure die-casting die and subsequently solidified, the die is then drawn out of the lightweight metal pressure die-casting die in such a way that an aperture, which has a groove profile, is formed as a seat for the sliding bearing bush to be pressed in. | 09-15-2011 |
20110275465 | Tensioning Device - A tensioning device is provided to aid in the maintenance and replacement of a drive member of a drive system. The tensioning device operates to maintain tension in the drive member during prolonged use of the drive system through a biased roller that receives and guides the drive member and adapts continuously to maintain tension as the drive member changes properties through use. The tensioning device further operates to ease the replacement of the drive member by being rotatable against the bias to provide slack within the drive member, such that the drive member may be removed from the belt drive system. The tensioning device includes an arm and a base, with the arm being capable of limited rotation about the base. The arm includes the roller for guiding the drive member and is biased in one direction to maintain tension within the drive member. The arm may be rotated against the bias towards an engaged position wherein the arm is restricted from counter rotation in the direction of the bias. While in (or substantially in) the engaged position, slack is introduced within the drive member such that the drive member may be removed. When a new or refurbished drive member has been replaced to the drive system, a further rotation of the arm disengages the arm from its restriction and is biased back towards a position of tension wherein the roller re-engages with the drive member to ensure tension in the belt drive system. | 11-10-2011 |
20110287881 | BELT TENSIONER WITH HIGH DAMPING RUBBER DEVICE - “BELT TENSIONER WITH HIGH DAMPING RUBBER DEVICE”, the present invention refers to the technical field of belt tensioners in general, more specifically a belt tensioner ( | 11-24-2011 |
20110294614 | BELT TENSIONING SYSTEM - A system for improving the efficiency of a belt-driven system is provided. The system is particularly adapted for retrofitting tensioners onto existing belt-driven machines or to incorporate a tensioner into an the existing design of a belt-driven machine with limited changes to the specifications of the existing design. The system includes a motor driving a belt that drives a pulley. The pulley drives a shaft or other element of the system. A tensioner is provided for tensioning the belt to impede slippage between the belt and the pulley. The tensioner is connected to the motor and a frame of the system via a mounting bracket that includes a first leg and a second leg having a plurality of mounting holes adapted to cooperate with mounts on the motor and a connector of the tensioner. In one embodiment, the mounting holes of the second leg are laterally offset from one or more mounting holes of the first leg. Additionally, in one embodiment, the mounting bracket is configured so that the mounting holes in the first leg are positioned to form an array of rows and columns, and the mounting holes in the second leg are positioned to form a separate array of rows and columns. | 12-01-2011 |
20130172137 | INTELLIGENT BELT DRIVE SYSTEM AND METHOD - In one aspect, the invention relates to a tensioner that is capable of precognitively anticipating when it is desirable to increase the tension in a belt or other endless drive element so as to prevent belt slip prior to events that would raise the risk of it. | 07-04-2013 |
20130225341 | TENSIONING DEVICE FOR A TRACTION ELEMENT AND METHOD OF INSTALLATION OF SUCH A DEVICE - The invention relates to a tensioning device comprising a back plate, on which is installed a tensioning roller provided with at least one bearing. The tensioning roller is installed on the back plate with the possibility of rotation about an eccentric axis (X | 08-29-2013 |
20140287858 | TENSIONER - The present invention discloses a tensioner which comprises: a base; a swing arm mounted on the base, rotating about a first central axis with respect to the base; an elastic element positioned between the base and the swing arm, which is used for biasing the swing arm to rotate with respect to the base; a frictional device which is located between the elastic; element and the base or the swing arm, for buffering the relative movement between the swing arm and the base, wherein the elastic element exerts along the radial direction a first pressure on the frictional device such that a first frictional force is produced between the frictional device and the base or the swing arm, and the tensioner further comprises a supporting bock which exerts along the radial direction a second pressure on the frictional device such that a second frictional force is produced between the frictional device and the base or the swing arm. Under the combined effect of the first fictional force and the second fictional force, the rotation of the swing arm with respect to the base is buffered, such that the tensioner of the present invention has relatively larger fictional force, that is, damping force. | 09-25-2014 |
20150337927 | SPACER FOR BELT TENSIONER - A belt assembly for internal combustion engine that has a tensioner mount is described. The belt assembly includes a spacer that is rotatably coupleable to the tensioner mount, and a tensioner that is co-rotatably coupled to the spacer. The spacer is positioned between the tensioner and the tension mount. | 11-26-2015 |
20160091064 | ASSEMBLY COMPRISING A FIXED SUPPORT, PULLEYS, A BELT AND A BELT TENSIONER - An assembly comprising: a fixed support such as an engine block, a plurality of pulleys mounted rotatably on the support a belt mounted on said pulleys a tensioner comprising: a plate a rotary element mounted on the plate via a rotating shaft fixed relative to said plate, the tensioner being capable of turning relative to the support, in a predefined direction of rotation, between an idle position in which the rotary element is separated from the belt and an operating position in which the rotary element is in contact with the belt, it being specified that, in the operating position, the belt exerts a force on the rotary element, the direction of said force tending to rotate the tensioner in said same predefined direction of rotation; at least one stop for preventing the tensioner from rotating in the predefined direction of rotation beyond the operating position of same, the latter thus being defined by the stop; wherein in order to rotate the tensioner relative to the support between the idle position and the operating position of the tensioner, the assembly comprises: at least one closed port arranged on the plate of the tensioner or on the support at least one means for engaging with the or each closed port, said engaging means being fixed relative to the support when the closed port is located on the plate or fixed relative to the plate when the closed port is located on the support. | 03-31-2016 |