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US4269295A Expired / Lapsed US ⏱️ 0.0 years remaining

Torque transmitting fluid couplings

Assignee: Standard Motor Products Inc
•
Filing: 1979-08-01
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Granted: 1981-05-26
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Expires: 1999-08-01
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Abstract

Abstract Torque transmitting fluid couplings of two types are described, one a thermatically controlled coupling and the other a torque limiting coupling. Both are characterized by the use of parts which can be manufactured at low cost and easily and quickly assembled, and contribute to greater efficiency in operation than fluid couplings of these types which have heretofore been marketed. Both utilize a housing or casing which is die-cast complete and finish bored, a drive shaft and coupling flange made of two separate pieces, which are welded together, ball bearing mounts, a cover or cover member made as a metal stamping, and a drive disc which is die-cast, in a single piece, to provide a friction ring and friction segments molded integrally therewith. In the thermatically-controlled type, the cover is part of a cover assembly, which comprises a bracket for supporting a bimetal strip, a steel guide bushing riveted to the cover and in which a piston or pin is adapted to be slidably mounted, and a rubber piston seal for preventing leakage of fluid through the cover. The thermatically-controlled type also includes a plate and spring assembly, comprising a divider plate made as a steel stamping and a spring made of spring steel and supporting a weir made of a graphite-filled material.

Inventors

  • 👤 Arthur S. Kish

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 08:22
CPC Classifications
F; F16; F16D; F16D35/00; F16D35/02; F16D35/021; F16D35/022

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 178 words
In a torque transmitting fluid coupling of the character described, a drive shaft assembly, a housing rotatably mounted on said drive shaft assembly, a cover secured to said housing, a drive disc within said housing driven by said drive shaft assembly, said housing consisting of a die casting having an unmachined internal surface, said cover consisting of a metallic stamping, said drive shaft assembly consisting of a body and a coupling flange, said body being a screw machine part, said coupling flange being a metallic stamping, which is welded to one end of said body, a bracket spot-welded to the exterior face of said cover, a bimetal strip secured to said bracket, said cover provided at its center with an embossment, forming a recess, a steel bushing mounted in said recess, and riveted to the embossment, a piston pin slidably mounted in the bushing, a cup-shaped rubber-like piston seal mounted in said recess, and an adhesive sealer applied to the periphery of the seal to seal the space between the seal and the inner wall of the embossment.
Claim 2
Dependent Claim 178 words
In a torque transmitting fluid coupling of the character described, a drive shaft assembly, a housing rotatably mounted on said drive shaft assembly, a cover secured to said housing, a drive disc within said housing driven by said drive shaft assembly, said housing consisting of a die casting having an unmachined internal surface, said cover consisting of a metallic stamping, said drive shaft assembly consisting of a body and a coupling flange, said body being a screw machine part, said coupling flange being a metallic stamping, which is welded to one end of said body, a bracket spot-welded to the exterior face of said cover, a bimetal strip secured to said bracket, said cover provided at its center with an embossment, forming a recess, a steel bushing mounted in said recess, and riveted to the embossment, a piston pin slidably mounted in the bushing, a cup-shaped rubber-like piston seal mounted in said recess, and an adhesive sealer applied to the periphery of the seal to seal the space between the seal and the inner wall of the embossment.
Claim 3
Dependent Claim 31 words
A torque transmitting fluid coupling, as defined in claim 1, including a solid lathe cut gasket seal of silicone rubber interposed between said housing and the marginal portion of said cover.
Claim 4
Dependent Claim 58 words
A torque transmitting fluid coupling, as defined in claim 2, wherein said drive disc is a casting, die-cast in a single piece, to provide on one face thereof a friction ring molded or cast integrally with the disc, and on the opposite face thereof, a plurality of circumferentially-spaced, arcuate, friction segments molded or cast integrally with the disc.
Claim 5
Dependent Claim 57 words
A torque transmitting fluid coupling, as defined in claim 3, including a plate and spring assembly disposed between said cover and drive disc, comprising a divider plate and a spring, said divider plate being a steel stamping having circumferentially-spaced, radially-extending reinforcing ribs stamped therein and having an axial opening, and said spring being made of spring steel.
Claim 6
Dependent Claim 49 words
A torque transmitting fluid coupling, as defined in claim 4, wherein said divider plate is provided at one point adjacent its periphery, with a circular aperture, and with a further aperture extending from the circular aperture and forming a port interconnecting the spaces at opposite sides of the plate.
Claim 7
Dependent Claim 37 words
A torque transmitting fluid coupling, as defined in claim 5, wherein said spring is riveted to said divider plate at a point adjacent said axial opening which is opposite that at which said circular aperture is disposed.
Claim 8
Dependent Claim 41 words
A torque transmitting fluid coupling, as defined in claim 6, wherein the free end of said spring has secured thereto an abutment member or weir of slightly smaller diameter than the circular aperture and is adapted for movement in said aperture.

References Cited (Backward Citations)

GB677019A Cited
US3191733A Cited
US3328058A Cited
US3410995A Cited
US3587800A Cited
US3559785A Cited
US3983980A Cited
US3968866A Cited
US4132299A Cited
US4190140A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-05-25 1984-11-24 1985-05-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-05-25 1988-11-24 1989-05-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-05-25 1992-11-24 1993-05-26 $7700.00 Window Closed / Lapsed

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