Lock

Details Lock Lock

2006-03-07

2006-03-07

Gall, Lloyd A. (Department: 3676)

Locks

Portable

Padlocks

C070S209000, C070S37900R, C070S419000, C070S420000, C070S423000, C070S453000, C070S491000

Reexamination Certificate

active

07007522

ABSTRACT:
A lock includes a body defining a first bore having a lock core mounted therein, and a second bore having an engaging element inserted thereinto; and a front barrier shield fixedly mounted in the body in front of the lock core. A communicating hole is formed in the body behind the lock core to communicate the two bores. A locking pin is disposed in the communicating hole to move into or out of a locking hole formed on the engaging element under control of the lock core, so as to lock or release the engaging element to or from the body, respectively. The front barrier shield includes a plurality of axially spaced and staggered barrier sheets to define a zigzag keyway, preventing a thief from peeping through the first bore and destructing the lock core.

REFERENCES:
patent: 41177 (1864-01-01), Harold
patent: 1499211 (1924-06-01), Giralico
patent: 1766784 (1930-08-01), Gregory
patent: 1804955 (1931-05-01), Schlumpf
patent: 2098249 (1937-11-01), Kistner
patent: 2993361 (1961-07-01), Lahr
patent: 3343386 (1967-09-01), Hall
patent: 3380268 (1968-04-01), Knox
patent: 3444712 (1969-05-01), Greenwald
patent: 3465556 (1969-09-01), McIlvenny
patent: 3903720 (1975-09-01), Scherbing
patent: 3903721 (1975-09-01), Aaron
patent: 4006615 (1977-02-01), Szova
patent: 4104898 (1978-08-01), Fois
patent: 4996856 (1991-03-01), Lin et al.
patent: 5819569 (1998-10-01), Herdman

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