Safe door bushing

Details Safe door bushing Safe door bushing

1986-07-28

1987-09-08

Wolfe, Robert L.

Locks

Operating mechanism

Combination

70326, 70445, E05B 1500

Patent

active

046915443

ABSTRACT:
A bushing 10 for a safe door combination lock supports a spindle 20 extending through inner and outer door walls 13 and 12 separated by a space filled with insulation. A stub 15 secured in a hole 17 in the inner wall 13 by a rotational rivet 16 has an axial bore hole and a machined periphery for receiving components of the combination lock. A thin walled tube 11 extends through the bore hole in stub 15 and through the space between the inner and outer walls. An outer end of tube 11 is flared against an outer surface of outer wall 12 and an inner end of tube 11 is flared against an inner end of stub 15. Tube 11 then receives spindle 20 for the combination lock without providing a large heat conductor through the interior of the safe. Also, if tube 11 and spindle 20 are driven into the interior of the safe with a punch, stub 15 retains the tumbler wheels of the combination lock to keep the lock secure.

REFERENCES:
patent: 922065 (1909-05-01), Townsend
patent: 1329511 (1920-02-01), Dick
patent: 1413393 (1922-04-01), DiBella
patent: 1440169 (1922-12-01), Ohnstrand
patent: 2322724 (1943-06-01), Archer
patent: 2622547 (1952-12-01), Fugelstad
patent: 2669198 (1954-02-01), Campbell
patent: 2677265 (1954-05-01), Bergendahl
patent: 2803203 (1957-08-01), Henkel
patent: 2925726 (1960-02-01), Miller
patent: 3426707 (1969-02-01), Heyl
patent: 4123925 (1978-11-01), Nemec
patent: 4376380 (1983-03-01), Burgess
patent: 4420955 (1983-12-01), Marold

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