Combination lock
AssigneePresto Lock Company, Division of Walter Kidde & Company, Inc.
InventorsCharles S. Gehrie, Irving Feinberg
Life of this patent
Estimating the term…
Abstract
A combination lock, including a plurality of dials and associated sleeve ns for each dial, has a plug member which is longitudinally movable to first and second positions and which is cooperable with the sleeve means for being locked in the first position when the dials are off combination. A manually operable latch member formed to engage a hasp is longitudinally movable from a latching position to an unlatching position only when the plug member is not locked in the first position. Longitudinally movable pullers are provided for moving the latch member from latching to unlatching position and from unlatching to latching position, respectively.
Claims19
A combination lock comprising:
- a plurality of dials supported for rotation about a longitudinal axis, each dial having sleeve means associated therewith;
- a plug member supported for movement longitudinally between first and second positions, the sleeve means having means cooperable with the plug member for releasably locking the plug member in said first position when the dials are off combination;
- and
- a manually operable latch member longitudinally movable with respect to the plug member to a latching position and an unlatching position, the latch member and the plug member having engageable means for preventing movement of the latch member to unlatching position when the plug member is locked in the first position.
A combination lock comprising:
- a face plate having longitudinally spaced slots;
- a plug member positioned beneath the face plate and supported for movement longitudinally between first and second positions, the plug member having longitudinally spaced bars defining slots in alignment with but of greater width than that of the face plate slots;
- a longitudinally extending shaft;
- a plurality of dials rotatably mounted on the shaft and positioned in said slots, sleeve means associated with each dial and having a flange and a flat portion, the flanges being cooperable with the bars of the plug member for releasably locking the plug member in said first position when the dials are off combination and for permitting the plug member to be moved between said first and second positions when the dials are on combination;
- and
- a latch member supported for movement longitudinally with respect to the plug member to a latching position and an unlatching position, the latch member and the plug member having engageable means for preventing movement of the latch member to unlatching position when the plug member is locked in said first position.
Dependencies are inferred from the claim text.