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EP0043641A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Variable-ratio power transmission mechanisms

Assignee: Motors Liquidation Co
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Filing: 1981-05-07
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Granted: —
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Expires: 2001-05-07
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Abstract

Abstract A power transmission mechanism has a variable ratio belt drive input 36, 66, 68, a pair of interconnected simple planetary gear sets 98, 110 and a differential gear set 140. The interconnected planetary gear sets are controlled by a pair of selectively engageable friction brakes 142, 116 to provide either a forward drive ratio or a reverse drive ratio. These brakes are designed to be slippingly engaged for smooth starting. The differential gear set has an input member 136 connected to the output of the planetary gear sets and a pair of output members 168, 170 which are connected to drive axles adapted to be connected to vehicle drive wheels. The belt drive, planetary gear sets and differential gear set are enclosed in a threepiece housing 28, 30, 32 which is adapted to be connected to an engine. The components are arranged within the housing for use in a transverse engine drive system.

Inventors

  • 👤 Erkki Antero Koivunen
  • 👤 James Francis Sherman

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 18:23
CPC Classifications
F; F16; F16H; F16H37/00; F16H37/02; F16H37/021; F16H37/022; F16H3/00; F16H3/44; F16H3/62; F16H3/66

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 181 words
'A power transmission mechanism characterised by an input member (22), variable ratio belt drive means (36,66,68) connected to said input member, a pair of interconnected simple planetary gear means (98 and 110), one (98) of said planetary gear means having one member (96) continuously drivingly connected to said belt drive means, output differential gear means (140) including a carrier member (138) continuously drivingly connected with one member (112) of the other (110) of said planetary gear menas, selectively operable forward brake means (142) operatively connected to another member (100,108) of each planetary gear means for selectively braking said another members for establishing a forward reduction ratio in both of said planetary gear means, and selectively operable reverse brake means (116) operatively connected to a further member (102,106) of each planetary gear means for selectively braking said further members for selectively establishing a reverse reduction ratio in said one planetary gear means and a forward reduction ratio in the other of said planetary gear means for providing a reverse reduction ratio between said belt drive means and said output differential gear means.
Claim 2
Dependent Claim 181 words
'A power transmission mechanism characterised by an input member (22), variable ratio belt drive means (36,66,68) connected to said input member, a pair of interconnected simple planetary gear means (98 and 110), one (98) of said planetary gear means having one member (96) continuously drivingly connected to said belt drive means, output differential gear means (140) including a carrier member (138) continuously drivingly connected with one member (112) of the other (110) of said planetary gear menas, selectively operable forward brake means (142) operatively connected to another member (100,108) of each planetary gear means for selectively braking said another members for establishing a forward reduction ratio in both of said planetary gear means, and selectively operable reverse brake means (116) operatively connected to a further member (102,106) of each planetary gear means for selectively braking said further members for selectively establishing a reverse reduction ratio in said one planetary gear means and a forward reduction ratio in the other of said planetary gear means for providing a reverse reduction ratio between said belt drive means and said output differential gear means.
Claim 3
Dependent Claim 120 words
A power transmission mechanism according to claim 1, characterised in that said variable ratio belt drive means (36,66,68,) is continuously drivingly connected to a sun gear .(96) of said one planetary gear means (98), said carrier member (138) of said output differential gear means (140) is continuously drivingly connected to a carrier member (112) of said other planetary gear means (110), said selectively operable forward brake means (142) is operatively connected to a ring gear (100) of said one planetary gear means and to a sun gear (108) of said other planetary gear means, and acid selectively operable reverse brake means (116) is operatively connected to a carrier member (102) of ring gear (106) of said other planetary gear means.

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