Downshift inhibitor

Details Downshift inhibitor Downshift inhibitor

1993-12-02

1995-12-05

Marmor, Charles A.

Machine element or mechanism

Gearing

Interchangeably locked

74336R, 74477, F16H 5900

Patent

active

054718937

ABSTRACT:
A downshift control for a manually shifted transmission (10) is provided. The control senses vehicle ground speed (100) and compares same to predetermined maximum values (REF.sub.1, REF.sub.2) at which certain ratios are allowed to downshift engaged. If vehicle speed exceeds the reference (OS>REF), a blocking plunger (216) assumes a position (216B, 216C) wherein selection of the prohibited ratio(s) is automatically mechanically blocked.

REFERENCES:
patent: 4275612 (1981-06-01), Silvester
patent: 4502346 (1985-03-01), Reynolds
patent: 4550627 (1985-11-01), Lauer et al.
patent: 4676115 (1987-06-01), Morscheck et al.
patent: 4788889 (1988-12-01), Davis et al.
patent: 4920815 (1990-05-01), Reynolds
patent: 4974468 (1990-12-01), Reynolds et al.
patent: 5048650 (1991-09-01), Takizawa

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