Abstract: An outer retainer includes a pair of annular portions facing each other in an axial direction and a plurality of column members connecting the annular portions. A plurality of window portions is formed by the annular portions and the column members, and an outward flange is provided at one side end thereof. The column member between window portions in predetermined positions is cut and the cut portion on the outward flange side is bent radially outward to be an elastic member. Paired cut-away portions are formed in predetermined portions of the outward flange with the elastic member disposed between the paired cut-away portions. In the thus-configured outer retainer, at least three window portions are disposed between the elastic member and the cut-away portion adjacent to the elastic member in the peripheral direction. Column members between paired cut-away portions are bent outward in the radial direction to be enlarged in diameter.

Abstract: A one-way clutch is provided with an outer ring having a cylindrical wall on an inner circumference thereof, an inner ring having cam surfaces formed thereon, rolling elements arranged between the outer and inner rings to perform transmission of a torque between the outer and inner rings, and springs biasing the rolling elements, respectively. The inner ring is provided on its outer circumferential wall with recesses such that lube-oil receiving and accumulating parts are formed between the cylindrical wall of the outer ring and the outer circumferential wall of the inner ring.

Abstract: An outer retainer includes a pair of annular portions facing each other in an axial direction and a plurality of column members that connects the annular portions. A plurality of window portions is formed by the annular portions and the column members, and an outward flange is provided at one side end thereof. The column member between the window portions in predetermined positions is cut and the cut portion on the outward flange side is bent outward in the radial direction to be an elastic member. Paired cut-away portions are formed in predetermined portions of the outward flange with the elastic member being disposed between the paired cut-away portions. In the thus-configured outer retainer, at least three window portions are disposed between the elastic member and the cut-away portion adjacent to the elastic member in the peripheral direction. The column members between the paired cut-away portions are bent outward in the radial direction to be enlarged in diameter.

Abstract: In a one-way clutch, an inner diameter-side retainer is formed with a radially inward flange while an outer diameter-side retainer is formed with a radially outward flange. The inner race has a portion radially outwardly extended from one end in the axial direction to the more outer diameter side than the outer race. The outer race has a portion radially inwardly extended from one end on the axially opposite side to that of the inner race to the more inner diameter side than the inner race. Those extended portions face each other in the axial direction with the torque transmitting members therebetween. The inner diameter-side retainer engages the inner race on the side of the extended portion of the inner race at the inner periphery of the inward flange, and the outer diameter-side retainer engages the outer race on the side of the extended portion of the outer race at the outer periphery of the outward flange.

Abstract: A roller type one-way clutch includes an outer ring and an inner ring disposed concentrically with each other for rotation relative to each other, the outer ring having an axially extending annular inner peripheral cam surface, the inner ring being disposed in the outer ring and having an annular outer peripheral raceway surface, and a plurality of rollers disposed between the outer ring and the inner ring for transmitting torque between the outer peripheral raceway surface and the inner peripheral cam surface. The rolling surface of each of the rollers has a recess depressed toward the axis thereof over the entire circumference thereof. In an alternative arrangement, an axially extending annular inner peripheral raceway surface is provided on the outer ring and an annular outer peripheral cam surface is provided on the inner ring.

Abstract: A one-way clutch is provided with an outer ring having a cylindrical wall on an inner circumference thereof, an inner ring having cam surfaces formed thereon, rolling elements arranged between the outer and inner rings to perform transmission of a torque between the outer and inner rings, and springs biasing the rolling elements, respectively. The inner ring is provided on its outer circumferential wall with recesses such that lube-oil receiving and accumulating parts are formed between the cylindrical wall of the outer ring and the outer circumferential wall of the inner ring.

Abstract: A one-way clutch apparatus with torque transmission elements and biasing members in concave cams on one of the inner and outer races has a retainer rotatable in a circumferential direction relative to the one race, has circumferential grooves on the one race, and has block bearings between the races with radial projections that move circumferentially in corresponding grooves.

Abstract: A roller type one-way clutch comprising an outer ring and an inner ring radially spaced apart from each other and disposed concentrically with each other for rotation relative to each other, the outer ring having an axially extending annular inner peripheral cam surface, the inner ring being disposed in the outer ring and having an annular outer peripheral raceway surface, and a plurality of rollers disposed between the outer ring and the inner ring for transmitting torque between the outer peripheral raceway surface and the inner peripheral cam surface is characterized in that the rolling surface of each of the rollers has a recess depressed toward the axis thereof over the entire circumference thereof.

Abstract: In a one-way clutch apparatus comprising an inner race element having an outer peripheral surface on which either one of a concave cam and a cylindrical surface is formed, an outer race element having an inner peripheral surface on which the other of the concave cam and the cylindrical surface is formed, a torque transmission member interposed between the concave cam and the cylindrical surface for performing torque transmission between the inner race element and the outer race element, urging means for urging the torque transmission member, a bearing member adapted to maintain a space between the inner race element and the outer race element, and a retainer mounted on whichever element on the cam side having the concave cam, out of the inner race element and the outer race element, for maintaining the torque transmission member, the urging means and the bearing member, the retainer is rotatable in the circumferential direction relatively with the element on the cam side.

Abstract: An end bearing, a one-way clutch device and a method of manufacturing the end bearing, capable of preventing abrasion or scorching of the end bearing while improving the productivity. The annular end bearing which is interposed between an inner race and an outer race of the one-way clutch device and is in a slidable contact with the inner race or the outer race when it is operated, wherein a recess having the depth of 5 to 30 &mgr;m is formed on a slidable contact surface with inner race or the outer race. The method comprises a blanking step of blanking an annular blank from a metal plate, a recess forming step of forming a recess in a predetermined portion of said blank, and a drawing step of forming a flange on said blank by drawing, wherein the above recess forming step is executed before or after the blanking step, or at the same time with the blanking step.

Abstract: A ratchet one-way clutch comprises an inner race provided with recessed portions on the outer circumference; an outer race member arranged coaxially with the inner race, being provided with pockets on the inner circum-ferential side; a pawl member arranged for each of the pockets to transmit torque by being fitted into each of the recessed portions; and a biasing member for biasing the pawl member in the inner diametral direction to promote the fitting. For this clutch, an operating element is provided to relatively rotate with respect to the outer race member, and an elastic member resides inclusively between the outer race member and the operating element.

Abstract: A one-way clutch device comprises a plurality of torque transmitting members interposed between an inner race and an outer race for transmitting a rotation between the inner race and the outer race through the torque transmitting members only in one direction of rotation. A side part of the inner race is formed with a plurality of oil paths for supplying lubricating oil.

Abstract: An end bearing, a one-way clutch device and a method of manufacturing the end bearing, capable of preventing abrasion or scorching of the end bearing while improving the productivity. The annular end bearing which is interposed between an inner race and an outer race of the one-way clutch device and is in a slidable contact with the inner race or the outer race when it is operated, wherein a recess having the depth of 5 to 30 &mgr;m is formed on a slidable contact surface with inner race or the outer race. The method comprises a blanking step of blanking an annular blank from a metal plate, a recess forming step of forming a recess in a predetermined portion of said blank, and a drawing step of forming a flange on said blank by drawing, wherein the above recess forming step is executed before or after the blanking step, or at the same time with the blanking step.

Abstract: An end bearing for a one-way clutch provided with non-through-holes on at least one of its inner peripheral wall and outer peripheral wall. These non-through-holes are arranged on and along plural imaginary lines, for example, straight or curved lines, which extend at a predetermined angle relative to a circumferential direction of the at least one peripheral wall. Also disclosed are a one-way clutch provided with one or two of such end bearings and a manufacturing process of such end bearing.

Abstract: A ratchet one-way clutch comprises an inner race provided with recessed portions on the outer circumference; an outer race member arranged coaxially with the inner race, being provided with pockets on the inner circum-ferential side; a pawl member arranged for each of the pockets to transmit torque by being fitted into each of the recessed portions; and a biasing member for biasing the pawl member in the inner diametral direction to promote the fitting. For this clutch, an operating element is provided to relatively rotate with respect to the outer race member, and an elastic member resides inclusively between the outer race member and the operating element.

Abstract: A one-way clutch device comprises a plurality of torque transmitting members interposed between an inner race and an outer race for transmitting a rotation between the inner race and the outer race through the torque transmitting members only in one direction of rotation. A side part of the inner race is formed with a plurality of oil paths for supplying lubricating oil.

Abstract: An end bearing for a one-way clutch provided with non-through-holes on at least one of its inner peripheral wall and outer peripheral wall. These non-through-holes are arranged on and along plural imaginary lines, for example, straight or curved lines, which extend at a predetermined angle relative to a circumferential direction of the at least one peripheral wall. Also disclosed are a one-way clutch provided with one or two of such end bearings and a manufacturing process of such end bearing.

Abstract: In a roller type one-way clutch before an inner race contacts with rollers, the inner race is centered by a pad bearing, whereby it becomes unnecessary to use a special assembling jig and also the working property of assembly can be improved without increasing the number of steps of assembling the one-way clutch.

Abstract: A fixing structure is provided for an outer ring in an one-way clutch. The fixing structure includes a ring-shaped leaf spring having angular waviness, interposed between an outer side wall of the outer ring and an opposing inner wall of a housing and integrally assembled on a stepped outer peripheral portion of the outer ring. The ring-shaped leaf spring has plural tabs on an inner peripheral edge portion thereof and is fixed by spring forces of the tabs immovably in the direction of an axis of the outer ring. The stepped outer peripheral portion of the outer ring preferably defines a circumferential slot therein and the tabs of the ring-shaped leaf spring are fitted in the circumferential slot, whereby any axial movement of the ring-shaped leaf spring is limited.

Abstract: A fixing structure is provided for an outer ring member in a one-way clutch. The fixing structure includes a spring device having resilient force in the direction of an axis of the one-way clutch and interposed between an outer peripheral side wall of an outer ring member of the one-way clutch and a stopper ring secured on an associated housing. The spring device is in the form of at least one spring member which is discrete from any component of the one-way clutch to permit an easy change in a spring characteristic and is held between a side wall of the outer ring member and a side plate mounted on the side wall of the outer ring member. The spring member is in engagement at a part thereof with a part of the side plate so that any radial movement of the spring member is limited by the part of the side plate.