Manual transmission with one primary shaft and two secondary shafts

[54] MANUAL TRANSMISSION WITH ONE

PRIMARY SHAFT AND TWO SECONDARY
SHAFTS

[75] Inventors: Alain Saint-Jean, Chateany-Malabry; Michel Bagard, La Garenne-Colombes, both of France

[73] Assignee: Regie Nationale des Usines Renault,

Boulogne Billancourt, France

[21] Appl. No.: 922,743

[22] Filed: Oct. 24, 1986

[30] Foreign Application Priority Data

Oct. 25, 1985 [FR] France 85-15852

Oct. 17, 1986 [FR] France 86-14434

[51] Int. a/ F16H3/08

[52] U.S. CI 74/359; 74/331

[58] Field of Search 74/359, 360, 331, 740,

74/701

[56] References Cited

U.S. PATENT DOCUMENTS

4,033,200 7/1977 Stockton 74/740

4,116,082 9/1978 Kelbel 74/359 X

4,377,093 3/1983 Janson 74/359 X

4,461,188 7/1984 Fisher 74/331 X

4,476,737 10/1984 Young 74/331 X

4,523,491 6/1985 Dittmann, Jr 74/360

4,527,447 7/1985 Richards 74/331 X

4,565,106 1/1986 Sumiyoshi 74/331 X

4,640,141 2/1987 Knodel et al 74/359 X

FOREIGN PATENT DOCUMENTS 2291054 11/1974 France .

2248746 5/1975 France 74/331

2553043 4/1984 France .

0094657 6/1983 Japan 74/359

2069635 8/1981 United Kingdom 64/331

2081825 2/1982 United Kingdom 74/331

Primary Examiner—Leslie A. Braun
Assistant Examiner—David Novais
Attorney, Agent, or Firm—Obion, Fisher, Spivak,
McClelland & Maier

[57] ABSTRACT

A manual transmission comprises a primary shaft and first and second secondary shafts placed parallel with the primary shaft. First speed, second speed, fifth speed and reverse idling gears are rotatably mounted on the first secondary shaft. A first double synchronizer is mounted on the first secondary shaft between the first speed idling gear and the second speed idling gear. A second double synchronizer is mounted on the first secondary shaft between the fifth speed idling gear and the reverse idling gear. Third and fourth speed idling gears are rotatably mounted on the second secondary shaft. A third double synchronizer is mounted on the second secondary shaft between the third speed idling gear and the fourth speed idling gear. A third speed gear is mounted on the primary shaft and meshes with the third speed idling gear, the third speed gear being axially positioned between the teeth of the reverse idling gear and the second double synchronizer. A fourth speed gear is mounted on the primary shaft and drivingly meshes with both the fourth speed idling gear and the fifth speed idling gear. A reverse intermediate gear is mounted on a fixed intermediate pin and meshes with the reverse idling gear.

2 Claims, 3 Drawing Sheets