3-action lock barrel

Details 3-action lock barrel 3-action lock barrel

2005-03-22

2005-03-22

Walsh, John B. (Department: 3676)

Locks

Operating mechanism

Key

C070S352000, C070S377000, C070S392000

Reexamination Certificate

active

06868706

ABSTRACT:
A three-action lock barrel having collective locking pins and two-way locking up mechanism is comprised of a case, a limiter, multiple locking plates and a rotor; the case being related to a hollow cylinder; a trough axially extending each from the inner wall of the case; the limiter being provided to limit the longitudinal sliding movement of those multiple locking plates arranged in flush and abutted to one another and accommodated inside the limiter; each locking plate being provided with an upper or a lower locking pin selected at random; the rotor receiving insertion of a key; the key turns around to push those locking pins to clear away or insert into a groove.

REFERENCES:
patent: 1218065 (1917-03-01), Diesel
patent: 1657039 (1928-01-01), Schafer
patent: 1850323 (1932-03-01), Heyer
patent: 2079628 (1937-05-01), Olson
patent: 2629247 (1953-02-01), Deutsch
patent: 4750342 (1988-06-01), Nakai
patent: 5134871 (1992-08-01), Makino et al.
patent: 5205143 (1993-04-01), Hakkarainen et al.
patent: 5388438 (1995-02-01), Haavikko Paavo
patent: 6003351 (1999-12-01), Chao et al.
patent: 6519989 (2003-02-01), Hirvi

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