Internal locking mechanism for barrel type locks

Details Internal locking mechanism for barrel type locks Internal locking mechanism for barrel type locks

1986-01-30

1986-09-30

Wolfe, Robert L.

Locks

Portable

Padlocks

70386, 70395, E05B 6736

Patent

active

046140972

ABSTRACT:
A plunger type lock comprising a barrel with an axial bore, locking members in the form of balls housed in the barrel wall and extensible outwardly from the barrel by a plunger axially slidable within the barrel bore, at least one further ball housed in an opening in the wall of the plunger and extensible outwardly therefrom and a peripheral groove on the inner wall surface of the barrel for receiving the further ball, the further ball being forceably moved and held in the barrel's groove by an incorrect key, instrument or an implement to prevent and resist movement of the plunger whenever an unauthorized attempt to operate and open the lock is made.

REFERENCES:
patent: 1499444 (1924-07-01), Caillois
patent: 1923025 (1933-08-01), Morse
patent: 3033016 (1962-05-01), Moberg
patent: 3478548 (1969-11-01), Finck
patent: 3714802 (1973-02-01), Morse
patent: 3835674 (1974-09-01), Hoyt
patent: 3914965 (1975-10-01), Paxton
patent: 4015456 (1977-04-01), Moberg
patent: 4040279 (1977-08-01), Signorelli
patent: 4058992 (1977-11-01), Nielsen
patent: 4155232 (1979-05-01), Haus

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