Heavy-duty panic proof lock unit

Details Heavy-duty panic proof lock unit Heavy-duty panic proof lock unit

1988-03-21

1989-06-13

Smith, Gary L.

Locks

Special application

For closures

70107, 70224, 292 92, 2923363, E05B 6510

Patent

active

048380539

ABSTRACT:
A heavy-duty panic proof lock unit comprising a latch bolt mechanism, a dead bolt mechanism, and a cartridge mechanism. The latch bolt mechanism cooperates with a primary spindle. The dead bolt mechanism cooperates with a secondary cylinder. The cartridge mechanism comprises a first cartridge plate, a second cartridge plate, a rocker lever, a collar, an H-shaped slide, a rotary lever, and a spring-loaded catch. The collar is a ring-shaped plate having approximately a same size with the opening of the drive ring of the rocker lever and comprises two outwardly projecting teeth at opposite locations respectively to cooperate with notches of the rocker lever. The collar also has an inwardly projecting tooth designed to fit in slide along the spindle slot and to transmit rotary force between the primary spindle and the rocker lever. The collar is entrapped in the opening of the drive ring, with the two outwardly projecting teeth thereof retained within the notches of the rocker lever. The notches are slightly larger than the outwardly projecting teeth so as to permit an extra 20 degree rotation of the collar at its both directions with respect to the rocker lever so that the latch bolt need not be cut or trimmed. The spindle of the lock unit is structurally reinforced in various locations so as to enhance the durability of the lock unit.

REFERENCES:
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patent: 2995396 (1961-08-01), Russell et al.
patent: 3390558 (1968-07-01), Tornoe et al.
patent: 3621685 (1971-11-01), Sargent
patent: 3999789 (1976-12-01), Maurits et al.
patent: 4129019 (1978-12-01), Urdal
patent: 4156541 (1979-05-01), Babb, Jr. et al.
patent: 4201069 (1980-05-01), Katayama et al.
patent: 4276760 (1981-07-01), Nolin

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