Abstract: A tensioner for generating tension in a power-transmitting belt is provided. The tensioner includes a base, which may be secured to an engine, and an arm that is movably attached to the base. A pulley is rotatably attached to the arm for engaging the belt. A spring is operatively connected to the arm and the base for urging the arm to move relative to the base in a first direction. When the arm is moved in the first direction, the pulley is moved into engagement with the belt with a force to tension the belt. The tensioner further includes a stop that is adjustably positioned on the base to limit the movement of the arm in a second direction. The position of the stop on the base may be automatically adjusted by the spring during installation of the tensioner.

Abstract: A tensioner for an endless power transmission belt, the belt being driven about a sheave. The tensioner may comprise a base, a resilient device, and first and second arms pivotally coupled for movement in an open and a closed direction. The tensioner may also comprise first and second pulleys rotatably coupled to the first and second arms, the resilient device biasing the arms in the closed direction in which the first and second pulleys apply tension to the belt. The tensioner may also comprise first and second stops positioned outside the arms on the base to limit the movement of the arms in the open direction in response to an increase in tension in the belt.

Abstract: A tensioner for generating tension in a power-transmitting belt is provided. The tensioner includes a base, which may be secured to an engine, and an arm that is movably attached to the base. A pulley is rotatably attached to the arm for engaging the belt. A spring is operatively connected to the arm and the base for urging the arm to move relative to the base in a first direction. When the arm is moved in the first direction, the pulley is moved into engagement with the belt with a force to tension the belt. The tensioner further includes a stop that is adjustably positioned on the base to limit the movement of the arm in a second direction. The position of the stop on the base may be automatically adjusted by the spring during installation of the tensioner.

Abstract: A tensioner for an endless power transmission belt, the belt being driven about a sheave. The tensioner may comprise a base, a resilient device, and first and second arms pivotally coupled for movement in an open and a closed direction. The tensioner may also comprise first and second pulleys rotatably coupled to the first and second arms, the resilient device biasing the arms in the closed direction in which the first and second pulleys apply tension to the belt. The tensioner may also comprise first and second stops positioned outside the arms on the base to limit the movement of the arms in the open direction in response to an increase in tension in the belt.

Abstract: A chain belt construction, a load block therefor and methods of making the same are provided, the chain belt construction comprising a plurality of interleaved sets of links, each set of links having a transversely disposed pivot pin arrangement joining its links to the links of the sets of links adjacent thereto, and a plurality of load blocks respectively interconnected to certain of the sets of links to be carried thereby, each load block having a tubular opening arrangement therein telescopically receiving the pivot pin arrangement of its respective set of links therein to interconnect that load block to its respective set of links.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: An endless power transmission belt construction having power transmitting contact faces and method of making the same are provided, the belt construction comprising an axial tensioning unit, a plurality of lateral stiffening units carried by the tensioning unit, and friction material carried by the units, the tensioning unit and the stiffening units being formed of material that provides an axial and lateral stiffness in excess of that normally provided by polymeric friction material that normally forms the main body of a belt construction that is reinforced with such a tensioning unit and stiffening units.

Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about a longitudinal axis of the hub. The pulley has a pair of opposed facing sides defining at least part of the groove therebetween and has a pair of oppositely facing outboard sides, the sides each having an inner peripheral portion and an outer peripheral portion. The pulley has a plurality of circumferentially spaced apart and radially disposed substantially straight vanes extending outwardly from at least one of the outboard sides thereof.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The bottom to top tooth pitch ratio of the belt construction, the bottom to top tooth depth ratio thereof, and the belt thickness to flex thickness ratio thereof may be varied in specific instances to optimize performance in specific uses.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: A belt pulley and method of making the same are provided, the pulley having a hub and a peripheral groove for receiving part of an endless belt therein that is to drive the pulley or be driven thereby whereby the pulley is adapted to be rotated about a longitudinal axis of the hub. The pulley has a pair of opposed facing sides defining at least part of the groove therebetween and has a pair of oppositely facing outboard sides, the sides each having an inner peripheral portion and an outer peripheral portion. The pulley has a plurality of circumferentially spaced apart and radially disposed substantially straight vanes extending outwardly from at least one of the outboard sides thereof.

Abstract: An endless power transmission belt construction having power transmitting contact faces and method of making the same are provided, the belt construction comprising an axial tensioning unit, a plurality of lateral stiffening units carried by the tensioning unit, and friction material carried by at least one of the tensioning unit and stiffening units, the tensioning unit and the stiffening units being formed of polymeric material that provides an axial and lateral stiffness in excess of that normally provided by polymeric friction material that normally forms the main body of a belt construction that is reinforced with such a tensioning unit and stiffening units. The stiffening means and the tensioning means are formed of the same material and comprise a one-piece construction.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The quotient of the top width to belt thickness is approximately 2.0, the quotient of the bottom to top tooth pitch is approximately 1.40, the quotient of the bottom to top tooth depth is approximately 1.77 and the quotient of the belt thickness to flex thickness is approximately 3.98.

Abstract: A pulley construction and method of making the same are provided, the pulley construction having a pair of opposed flanges respectively provided with surfaces for engagement with a V-belt construction when the V-belt construction is disposed therebetween. The pulley construction has a speed responsive unit for moving one of the flanges axially relative to the other of the flanges, the speed responsive unit comprising a pair of opposed raceways respectively having surfaces and movable elements disposed against the surfaces of the raceways for movement in the raceways. The surfaces of the raceways comprise polymeric material that will be deflected by the movable elements and thereby will tend to dampen out vibrations and shock load motion as the movable elements move relative to the surfaces of the raceways.

Abstract: An endless power transmission belt construction having power transmitting contact faces and method of making the same are provided, the belt construction comprising an axial tensioning unit, a plurality of lateral stiffening units carried by the tensioning unit, and friction material carried by at least one of the tensioning unit and stiffening units, the tensioning unit and the stiffening units being formed of polymeric material that provides an axial and lateral stiffness in excess of that normally provided by polymeric friction material that normally forms the main body of a belt construction that is reinforced with such a tensioning unit and stiffening units. The stiffening means and the tensioning means are formed of the same material and comprise a one-piece construction.

Abstract: An endless power transmission V-belt construction and method of making the same are provided, the belt construction being formed mainly of polymeric material and having rounded top and bottom teeth respectively extending along the length of the top and bottom surfaces of the belt construction, the belt construction comprising a tension section having the top surface, a compression section having the bottom surface, and a load-carrying section disposed intermediate the tension section and the compression section. The quotient of the bottom to top tooth pitch ratio of the belt construction is approximately 1.40 and the quotient of the bottom to top tooth depth ratio thereof is approximately 1.77 while the quotient of the belt thickness to flex thickness ratio thereof is approximately 3.98.

Abstract: A torque-sensing pulley is disclosed wherein one of the pulley sections is attached to a central shaft, the other pulley section has a cam operatively connected to a matching cam carried by the shaft, means are provided for biasing the cams apart and biasing the pulley sections together, and including damping means for preventing sudden change in the axial spacing of the pulley sections.