Brake locking and release system

Brakes – Elements – Locks

Patent

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Details

74529, 74540, F16D 6900

Patent

active

051274965

ABSTRACT:
This invention relates to systems for locking a brake in a brake actuated position. The invention is similar to other such systems in that the system comprises a brake, a pedal lever having a ratcheted edge and being connected via a linkage to the brake, a locking member such as a pawl with a tooth for engaging the ratcheted edge of the pedal lever in a brake actuated position, and a locking lever connected to the pawl for displacing the pawl between a first position at which the pawl is remote from the ratcheted edge of the pedal lever and a second position at which the pawl interfaces with the ratcheted edge of the pedal lever, the locking lever being hand manipulated by a handle connected to the locking lever via a linkage. However, this invention is an improvement over such other systems in that an elastic member is connected between the pawl and the locking lever so that when the locking lever is moved from its first position to its second position, and any frictional forces between the pawl and ratcheted edge are relieved, the pawl will return automatically to its disengaged position.

REFERENCES:
patent: 2854858 (1958-10-01), Butterfield et al.
patent: 2881872 (1959-04-01), Risk
patent: 3194085 (1965-07-01), Kirk
patent: 3364784 (1968-01-01), Mellen
patent: 3861237 (1975-01-01), Mounts
patent: 3929033 (1975-12-01), Marx
patent: 4421214 (1983-12-01), Sellmeyer
patent: 4441380 (1984-04-01), Kawaguchi et al.
patent: 4604913 (1986-08-01), Kyonomine
patent: 4612823 (1986-09-01), De Leeuw et al.
patent: 4949592 (1990-08-01), Yamazaki et al.

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