Machine element or mechanism – Elements – Gear casings
Patent
1982-06-28
1984-04-17
Staab, Lawrence J.
Machine element or mechanism
Elements
Gear casings
74467, 277 26, 403 29, F16H 5704, F16H 5702, F02F 500, F16C 900
Patent
active
044427336
ABSTRACT:
A power transmission having fluid actuated ratio establishing devices has a center support disposed in a cylindrical main bore of the transmission case and a plurality of elastomeric shims around the center support in an annular gap between the latter and the main bore. Each shim has a spacer portion in compression between the center support and the main bore which spacer portions exert balanced radially directed forces on the center support operative to centralize the latter in the main bore and the shims have coefficients of thermal expansion sufficiently exceeding the coefficients of thermal expansion of the case and/or the center support to maintain the spacer portions in compression throughout the operating temperature range of the transmission. In addition, one of the compressed spacer portions is interposed between a fluid supply passage in the case and a passage in the center support and has an aperture in register with the passages so that the spacer portion forms a gasket preventing fluid leakage into the gap.
REFERENCES:
patent: 3084003 (1963-04-01), Matt et al.
patent: 3097546 (1963-07-01), Kelbel et al.
patent: 3146629 (1964-09-01), Schmitter
patent: 3653118 (1972-04-01), Koivunen
patent: 3730022 (1973-05-01), O'Malley
patent: 3765519 (1973-10-01), Kell
patent: 4110888 (1978-09-01), Mutou
patent: 4112786 (1978-09-01), Thomas
patent: 4152957 (1979-05-01), Watanabe et al.
patent: 4241622 (1980-12-01), Kubo et al.
patent: 4281941 (1981-08-01), Rotterkolber
Bednarek Michael D.
General Motors Corporation
Schwartz Saul
Staab Lawrence J.
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