Tubular lock puller

Details Tubular lock puller Tubular lock puller

1993-01-08

1994-01-11

Watson, Robert C.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

B23P 1904

Patent

active

052769518

ABSTRACT:
A hand-held tool for pulling the inner cylinder from a tubular lock that has become inoperative. The tool comprises a cylindrical housing carrying a threaded main shaft which has a front segment with resilient fingers. The fingers are radially compressible for insertion into the annular key passageway of the lock whereupon the fingers return to original condition and have tips that engage the inner rim of the lock cylinder. A second shaft is slidable within the main shaft and carries a locking cup that retains the inserted fingers in the rim-engaging condition. A threaded nut on the main shaft is rotatable manually and with a wrench or the like to withdraw the main shaft and forcibly pull the inner cylinder from the lock.

REFERENCES:
patent: 2031998 (1936-02-01), Bliss
patent: 2059376 (1936-11-01), Lombardo
patent: 2070342 (1937-02-01), Tarrie
patent: 2655808 (1953-10-01), Wilson
patent: 2755540 (1956-07-01), Crozier
patent: 3052973 (1962-09-01), Williams
patent: 3241223 (1966-03-01), Anderson
patent: 3270538 (1966-09-01), Kerr
patent: 3330141 (1967-07-01), Greenwald
patent: 3535765 (1970-10-01), Denehie
patent: 4507837 (1985-04-01), Hinkle

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