Fluid actuated shift bar housing assembly

Details Fluid actuated shift bar housing assembly Fluid actuated shift bar housing assembly

1987-03-17

1988-06-07

Staab, Lawrence

Machine element or mechanism

Gearing

Interchangeably locked

74346, 74477, 74DIG7, F16H 322, B60K 2000

Patent

active

047488638

ABSTRACT:
Provided is a transmission gear change shift bar housing assembly (100) that features a pair of shift bars (18, 24) respectively slidably disposed within bores (7, 9) in a housing (4) that are respectively attached to pistons (14, 22) that respectively define fluid pressurizable chambers (A, B and D) with chambers (A) and (D) being in fluid communication with each other in conjunction with and end housing (38) having an enlarged fluid pressurizable chamber (C) containing an enlarged piston (42) engagable with piston (14) and a fluid pressurizable chamber (E) in fluid communication with piston (22) such that selective pressurization of one or more of chambers (A, B, C, D and E) is able to move shift bar (18) between a neutral position (N) and two axial displaced positions (P.sub.1, P.sub.2) and to move shift bar (24) between a neutral position (N) and an axially displaced position (P) with enlarged piston (42) and chamber (C) operative to apply increased force against piston (14) for effecting rapid and positive shifting.

REFERENCES:
patent: 2206221 (1940-07-01), Carter
patent: 3664470 (1972-05-01), Beech et al.
patent: 4415786 (1983-11-01), Takada et al.
patent: 4440037 (1984-04-01), Foxton et al.
patent: 4445393 (1984-05-01), Braun
patent: 4555959 (1985-12-01), Braun
patent: 4592249 (1986-06-01), Lehmann et al.

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