Lock capping

Details Lock capping Lock capping

1983-03-02

1985-07-30

Wolfe, Robert L.

Locks

Operating mechanism

Key

70385, E05B 1500

Patent

active

045313903

ABSTRACT:
A utility cylindrical lock set having a series of pin tumbler bores accommodating a plurality of pin stacks and biasing springs is provided with an improved cap. The external surface of a cylindrical lock body includes a cap-receiving groove crossing the open upper ends of the pin tumbler bores. The sides of the groove are undercut to form overlying flanges. An elongated cap having a central portion to overlie the pin tumbler bores and edge portions offset downward from the central portion is receivable within the groove. The edge portions of the cap project oppositely outward to engage the side flanges of the groove to retain the cap in place in the groove. A small recess is formed in one side of the groove. The elongated cap includes a complementary side protrusion to engage the recess to locate the cap against longitudinal movement in the groove. The cap is mounted by engaging one edge of the transversely yieldable cap beneath one side flange and then applying force to the opposite edge to pass the opposite flange and move downward to a position of engagement beneath such flange.

REFERENCES:
patent: 2105659 (1938-01-01), Jacobi
patent: 3002268 (1961-10-01), Spain
patent: 4380163 (1983-04-01), Reder

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