A tensioner comprising a base having a cylindrical portion extending axially, the cylindrical portion comprising a radially outer surface and a receiving portion that is radially inward of the radially outer surface, an eccentric arm pivotally engaged with the radially outer surface, a torsion spring disposed within the radially inward receiving portion, the torsion spring applying a biasing force to the eccentric arm, and a pulley journalled to the eccentric arm.

A tensioner for reducing vibration and noise associated with a vehicle engine includes: a tensioner arm having a cylindrical protrusion extending from a first side of the tensioner arm; the cylindrical protrusion having at least one counter-bore disposed on a surface of the cylindrical protrusion and an inner bore extending through the cylindrical protrusion; an axle adapted to be received by the inner bore, the tensioner arm being adapted to rotate about the axle; a spring disposed proximate a second side of the tensioner arm, opposite the first side, the spring being adapted to bias the tensioner arm in a first direction; and a damping structure that includes a gripping seat adapted to engage a portion of the tensioner arm, in which the damping structure limits rotation of the tensioner arm in a second direction opposite the first direction.

A driving system for driving at least one auger of a snow removing device comprising at least one at least one self-adjusting chain tensioner. A first portion of the driving system is positioned within an auger housing and a second portion of the driving system is positioned outside the auger housing. The roller chain is adapted to move across a third opening provided in the auger housing. The first portion is covered by a front guard to prevent snow or debris contained in the auger housing to contact said first portion. The front guard is provided with an opening adapted to surround a portion of a shaft element of the auger with a play between periphery of the opening and the periphery of a corresponding portion the shaft element. The play is either small enough to prevent water and or debris to enter the first casing, or filled with a filling element and/or covered with a sealing element secured to the front guard or the corresponding portion of the shaft element of the at least one auger, to have the play small enough to prevent water and/or debris to enter the first casing. The second portion prevent snow or debris present around the snow removing device to contact the said second portion. A snow blower provided with the driving system, a kit comprising parts and/or components of the driving system, a method for assembling the driving system, and a method for manufacturing some components or parts of the driving system.

A chain drive assembly for an internal combustion engine comprises a tensioning rail supportable on an engine block so as to be pivotable about a pivot bearing axle and further comprises a pivot bearing that can be provided on the engine block. The tensioning rail having a projection, which protrudes from the tensioning rail relative to the support body, so as to hold, at least during mounting, the tensioning rail at a mounting position. Additionally, the invention relates to the use of such a tensioning rail for mounting on the engine block of an internal combustion engine as well as to a bipartite chain drive of an internal combustion engine and a suitable mounting method.

The invention relates to a tensioning device for a traction drive, comprising a receiving housing, a roller carrier which is pivotably connected to the receiving housing, a helical tension spring which is supported at the receiving housing and at the roller carrier in circumferential and axial direction, wherein the roller carrier and the receiving housing are axially fixed relative to one another by the helical tension spring, a bearing arrangement by which the roller carrier is supported in the receiving housing so as to be rotatable around a rotational axis, a damping arrangement for damping a rotational movement of the roller carrier relative to the receiving housing, wherein the damping arrangement is arranged so as to be axially spaced from the bearing arrangement and is axially loaded by a tensile load of the helical tension spring.

A chain drive assembly for an internal combustion engine comprises a tensioning rail supportable on an engine block so as to be pivotable about a pivot bearing axle and further comprises a pivot bearing that can be provided on the engine block. The tensioning rail having a projection, which protrudes from the tensioning rail relative to the support body, so as to hold, at least during mounting, the tensioning rail at a mounting position. Additionally, the invention relates to the use of such a tensioning rail for mounting on the engine block of an internal combustion engine as well as to a bipartite chain drive of an internal combustion engine and a suitable mounting method.

The invention relates to a tensioning device for a traction drive, comprising a receiving housing, a roller carrier which is pivotably connected to the receiving housing, a helical tension spring which is supported at the receiving housing and at the roller carrier in circumferential and axial direction, wherein the roller carrier and the receiving housing are axially fixed relative to one another by the helical tension spring, a bearing arrangement by which the roller carrier is supported in the receiving housing so as to be rotatable around a rotational axis, a damping arrangement for damping a rotational movement of the roller carrier relative to the receiving housing, wherein the damping arrangement is arranged so as to be axially spaced from the bearing arrangement and is axially loaded by a tensile load of the helical tension spring.

An auto tensioner is supported on one side surface of a cylinder block (the outer surface of a front wall part) via a bracket. The auto tensioner includes: a tension pulley that is pressed against a belt; an arm that rotatably supports the tension pulley and is swingably supported to the bracket; and a hydraulic actuator that is supported by the arm and bracket to adjust the pressing force of the tension pulley to the belt using a predetermined position of the arm as a supporting point. The hydraulic actuator is disposed outside the water pump on the front wall part of the cylinder block.