Manual transmission gearset brake for synchronized engagement of

Details Manual transmission gearset brake for synchronized engagement of Manual transmission gearset brake for synchronized engagement of

1987-12-21

1989-12-26

Braun, Leslie A.

Machine element or mechanism

Gearing

Interchangeably locked

192 53F, 192 67A, F16H 338, F16D 1104, F16D 1110, F16D 1322

Patent

active

048890030

ABSTRACT:
A manually operated automotive transmission has a cluster gear on which several forward drive input gears and the reverse drive input gear are formed integrally. An auxiliary coutershaft carries a fifth speed gear continuously engaged with a gear formed on the input shaft. A reverse idler slides on a stub shaft into engagement with a reverse pinion on the input shaft and a reverse output gear. The fifth gear synchronizer sleeve is moved away from the fifth gear when reverse gear is selected because the fifth gear selector position is in the same plane as the reverse drive position. A gearset brake is actuated by movement of the synchronizer sleeve to prevent rotation of the fifth speed gear relative to the input shaft during the initial movement of the selector shaft toward the reverse drive position. The brake mechanism is released as the selector shaft is moved fully to the reverse drive position.

REFERENCES:
patent: 1777480 (1930-10-01), Schoonmaker
patent: 4294338 (1981-10-01), Simmons
patent: 4377093 (1983-03-01), Janson
patent: 4581950 (1986-04-01), Schrape et al.
patent: 4598599 (1986-07-01), Ikemoto
patent: 4620623 (1986-11-01), Barksdale et al.
patent: 4623054 (1986-11-01), Barksdale et al.
patent: 4674346 (1987-06-01), Hiraiwa
patent: 4799399 (1989-01-01), Bruce

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