Overrunning clutch for use in an automotive power transmission

Claim 2

An overrunning clutch comprising an inner wheel having an outer peripheral wall, an outer wheel facing said outer peripheral wall of said inner wheel having an inner peripheral wall, at least three radially extending projecting portions provided on either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally spaced positions, said projecting portions engaging another one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel, a plurality of cam surfaces provided on said either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally divided positions between adjacent said projecting portions, each of said cam surfaces being inclined at the same angle with respect to the center of said overrunning clutch, and a plurality of rollers disposed between said cam surfaces and said another one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel.

Claim 3

An overrunning clutch comprising an inner wheel having an outer peripheral wall, an outer wheel having an inner peripheral wall facing said outer peripheral wall of said inner wheel, at least three projection portions radially inwardly extending from said inner peripheral wall of said outer wheel at circumferentially equally spaced positions, said projecting portions each having a peripheral wall engaging said outer peripheral wall of said inner wheel to prevent eccentricity of said inner wheel with respect to said outer wheel, a plurality of cam surfaces formed on said inner peripheral wall of said outer wheel at circumferentially equally divided positions between adjacent said projecting portions, each of said cam surfaces being inclined at the same angle with respect to the center of said overrunning clutch, and a plurality of rollers disposed in between said outer peripheral wall of said inner wheel and said cam surfaces formed on said inner peripheral wall of said outer wheel, said rollers being capable of contacting said outer peripheral wall of said inner wheel and said cam surfaces on said outer wheel, whereby said inner wheel is prevented from rotation in one direction with respect to said outer wheel.

Claim 4

An overrunning clutch comprising an inner wheel having an outer peripheral wall, an outer wheel having an inner peripheral wall facing said outer peripheral wall of said inner wheel, at least three projection portions radially inwardly extending from said inner peripheral wall of said outer wheel at circumferentially equally spaced positions, said projecting portions each having a peripheral wall engaging said outer peripheral wall of said inner wheel to prevent eccentricity of said inner wheel with respect to said outer wheel, a plurality of cam surfaces formed on said inner peripheral wall of said outer wheel at circumferentially equally divided positions between adjacent said projecting portions, each of said cam surfaces being inclined at the same angle with respect to the center of said overrunning clutch, and a plurality of rollers disposed in between said outer peripheral wall of said inner wheel and said cam surfaces formed on said inner peripheral wall of said outer wheel, said rollers being capable of contacting said outer peripheral wall of said inner wheel and said cam surfaces on said outer wheel, whereby said inner wheel is prevented from rotation in one direction with respect to said outer wheel.

Claim 5

An overrunning clutch comprising an inner wheel having an outer peripheral wall, an outer wheel having an inner peripheral wall facing said outer peripheral wall of said inner wheel, at least three projecting portions radially outwardly extending from said outer peripheral wall of said inner wheel at circumferentially equally spaced positions, said projecting portions each having a peripheral wall engaging said inner peripheral wall of said outer wheel to prevent eccentricity of said outer wheel with respect to said inner wheel, a plurality of cam surfaces formed on said outer peripheral wall of said inner wheel at circumferentially equally divided positions between said adjacent projecting portions, each of said cam surfaces being inclined at the same angle with respect to the center of said overrunning clutch, and a plurality of rollerS disposed in between said cam surfaces on said inner wheel and said inner peripheral wall of said outer wheel, said rollers being capable of contacting said inner peripheral wall of said outer wheel and said cam surfaces on said inner wheel, whereby said outer wheel is prevented from rotation in one direction with respect to said inner wheel.

Claim 6

An overrunning clutch comprising an inner wheel having an outer peripheral wall, an outer wheel having an inner peripheral wall facing said outer peripheral wall of said inner wheel, at least three projecting portions radially outwardly extending from said outer peripheral wall of said inner wheel at circumferentially equally spaced positions, said projecting portions each having a peripheral wall engaging said inner peripheral wall of said outer wheel to prevent eccentricity of said outer wheel with respect to said inner wheel, a plurality of cam surfaces formed on said outer peripheral wall of said inner wheel at circumferentially equally divided positions between said adjacent projecting portions, each of said cam surfaces being inclined at the same angle with respect to the center of said overrunning clutch, and a plurality of rollerS disposed in between said cam surfaces on said inner wheel and said inner peripheral wall of said outer wheel, said rollers being capable of contacting said inner peripheral wall of said outer wheel and said cam surfaces on said inner wheel, whereby said outer wheel is prevented from rotation in one direction with respect to said inner wheel.

Claim 7

An overrunning clutch for an automotive automatic power transmission having a casing body and a drum member, said overrunning clutch comprising an inner wheel connected to said drum member and having an outer peripheral wall, an outer wheel press fitted into a bore of said casing body a flange portion extending radially outwardly from the outer peripheral wall of said outer wheel and abutting against said casing body, an annular shoulder portion formed in said inner peripheral wall of said outer wheel, an annular thrust plate fixedly disposed in said annular shoulder portion on said outer wheel, and a plurality of thrust bearing rollers disposed between said drum member and said thrust plate to transmit the thrust exerted on said drum member to said casing body through said thrust plate on said annular shoulder portion of said outer wheel.

Claim 8

An overrunning clutch for an automotive automatic power transmission having a casing body and a drum member, said overrunning clutch comprising an inner wheel connected to said drum member and having an outer peripheral wall, an outer wheel press fitted into a bore of said casing body a flange portion extending radially outwardly from the outer peripheral wall of said outer wheel and abutting against said casing body, an annular shoulder portion formed in said inner peripheral wall of said outer wheel, an annular thrust plate fixedly disposed in said annular shoulder portion on said outer wheel, and a plurality of thrust bearing rollers disposed between said drum member and said thrust plate to transmit the thrust exerted on said drum member to said casing body through said thrust plate on said annular shoulder portion of said outer wheel.

Claim 9

An overrunning clutch for an automotive automatic power transmission having a casing body and a drum member, said overrunning clutch comprising an inner wheel connected to said drum member and having an outer peripheral wall, an outer wheel press fitted to a bore of said casing body and having an inner peripheral wall, at least three radially extending projecting portions provided on either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally spaced positions, said projecting portions engaging another one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel, at least two cam surfaces provided on said either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally divided positions between adjacent said projecting portions, at least two rollers disposed about said cam surfaces between said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel, a flange portion extending radially outwardly from the outer peripheral wall of said outer wheel and abutting against said casing body, an annular shoulder portion formed in said inner peripheral wall of said outer wheel, an annular thrust plate fixedly disposed in said annular shoulder portion on said outer wheel, and a plurality of thrust bearing rollers disposed between said drum member and said thrust plate to transmit the thrust exerted on said drum member to aid casing body through said thrust plate on said annular shoulder portion of said outer wheel.

Claim 10

An overrunning clutch for an automotive automatic power transmission having a casing body and a drum member, said overrunning clutch comprising an inner wheel connected to said drum member and having an outer peripheral wall, an outer wheel press fitted to a bore of said casing body and having an inner peripheral wall, at least three radially extending projecting portions provided on either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally spaced positions, said projecting portions engaging another one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel, at least two cam surfaces provided on said either one of said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel at circumferentially equally divided positions between adjacent said projecting portions, at least two rollers disposed about said cam surfaces between said outer peripheral wall of said inner wheel and said inner peripheral wall of said outer wheel, a flange portion extending radially outwardly from the outer peripheral wall of said outer wheel and abutting against said casing body, an annular shoulder portion formed in said inner peripheral wall of said outer wheel, an annular thrust plate fixedly disposed in said annular shoulder portion on said outer wheel, and a plurality of thrust bearing rollers disposed between said drum member and said thrust plate to transmit the thrust exerted on said drum member to aid casing body through said thrust plate on said annular shoulder portion of said outer wheel.