Clutch mechanism for a lock

Details Clutch mechanism for a lock Clutch mechanism for a lock

1999-03-12

2000-03-28

Gall, Lloyd A.

Locks

Special application

For closures

70149, 70223, 70224, E05B 1310

Patent

active

060416300

ABSTRACT:
A lock includes an inner handle having a locking bar received therein and an outer handle connected to a spindle with a retaining base received therein which has two first grooves defined therein. A cam is connected to the retaining base and has two second grooves which communicate with the first grooves so that a locking piece is movably received between the retaining base and the cam with a spring biased between the locking piece and the retaining base. The locking piece has two flanges movably received in the first grooves and the second grooves. A slide is movably received in the cam and contact the locking piece at one end thereof and the locking bar at the other end thereof so that the two flanges of the locking piece are disengaged from the second grooves when the locking bar is pushed. Therefore, the outer handle can be freely rotated.

REFERENCES:
patent: 655605 (1900-08-01), Churchill
patent: 1143610 (1915-06-01), Carr
patent: 2497328 (1950-02-01), Smith et al.
patent: 4424691 (1984-01-01), Foshee
patent: 5598726 (1997-02-01), Cordle
patent: 5868018 (1999-02-01), Kang

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