Locks – Portable – Padlocks
Patent
1987-01-07
1988-07-05
Wolfe, Robert L.
Locks
Portable
Padlocks
70316, 70312, E05B 3714
Patent
active
047546239
ABSTRACT:
An adjustable combination numerical lock comprising a hook, a first tray, a second tray, a contact chip, two or more number dials, springs and driving rolls. The number dials, the springs, and the driving rolls are respectively set in the second tray, and the hook wedged with the contact chip is put on the two trays. When this lock is locked, the sliding strips do not engage with the recesses of the driving rolls, thereby allowing the driving rolls to rotate with the number dials. Therefore, the sliding strips will be prevented from sliding up if the combination is off. When the numbers are put into the right combination, the lock is opened and the sliding strips are partly engaged with the recesses so that the hook can be pulled up. The combination of the lock can be changed (while in opening combination) by turning the hook right 90 degrees and then pulling it up so that the sliding strips are completely engaged with the recesses. This keeps the driving rolls from rotating with the number dials. Then, the number dial may be adjusted to a new combination by pressing the hook down and returning the hook to its original position.
REFERENCES:
patent: 3592027 (1971-07-01), Wako
patent: 3720082 (1973-03-01), Feinberg
patent: 3766758 (1973-10-01), Heine
patent: 4048821 (1977-09-01), Beko
patent: 4341099 (1982-07-01), Garro
patent: 4531388 (1985-07-01), Garro
Rosenberg Morton J.
Wolfe Robert L.
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