Gear shift selector brake interlock
OwnerFrank Viscardiinventor
Life of this patent
Estimating the term…
Abstract
An automobile transmission gear shift selector brake interlock mechanism, for selectively preventing inadvertent movement of a motor vehicle gear shift selector mechanism, between a non-drive `park` or "neutral" position, and a "drive" position, including a hydraulically, or mechanically-actuated interlock pin mechanism that is movable between a position in the path of the gear shift selector mechanism, and a removed position out of the path of the gear shift selector mechanism, when a motor vehicle brake pedal is actuated.
Claims4
A mechanically-actuated gear shift selector brake interlock mechanism, for motor vehicles having automatic transmissions comprising:
- a gear shift selector plate mounted rotatably at the upper end of a conventional steering column sleeve;
- said gear shift selector plate being circular and having gear position markings along the periphery of said selector plate;
- interlock pin holes situated on said gear shift selector plate;
- an interlock pin means consisting of a tubular elongated chamber containing an interlock pin spring and an interlock pin;
- said interlock pin holes on said gear shift selector plate serving to receive interlock pin of the interlock pin means;
- a brake interlock lever being an elongated rod-like structure extending from a linkage on the conventional brake pedal means to said interlock pin means;
- said interlock pin captured in said interlock pin hole on said gear shift plate when conventional gear shift selector lever is at park or neutral positions;
- said interlock pin being retracted from interlock pin hole located on said gear shift selector plate when brake pedal means has been actuated.
A hydraulically actuated gear shift selector brake interlock mechanism for motor vehicles having automatic transmissions comprising:
- a gear shift selector plate rotatably mounted at the upper end of a conventional steering column sleeve;
- said gear shift selector plate being circular and having gear position markings along the periphery of said selector plate;
- interlock pin notches situated on periphery of said gear shift selector plate;
- an interlock pin mechanism consisting of a tubular elongated chamber containing an interlock pin piston, an interlock spring, and an interlock pin means including an interlock pin coupled to the said interlock pin piston;
- said interlock pin notches on said gear shift selector plate serving to receive said interlock pin of the said interlock pin means;
- a hydraulic brake feed line diverting brake fluid from a conventional brake system to a hydraulic brake interlock cable;
- said hydraulic brake interlock cable being an elongated tubular cable structure to lead brake fluid from said brake feed line to said hydraulically actuated interlock pin mechanism;
- said interlock pin captured in said interlock pin notch on said gear shift plate when said conventional gear shift lever is at park or neutral position;
- said interlock pin being retracted from said interlock pin notch located on said gear shift selector plate when said brake pedal means has been actuated.
Dependencies are inferred from the claim text.