Deadbolt combination lock system with automatic locking spring bolt
AssigneeMas-Hamilton Group
InventorsWalter R. Evans, James D. Hamilton, Kenneth H. Mimlitch
Life of this patent
Estimating the term…
Abstract
A deadbolt lock and a deadbolt which will extend automatically whenever a container is locked by virtue of a rigid portion of the container engaging a trigger element extending from the end face of the bolt and causing the release of an outer bolt portion is shown and described herein. The release of the outer bolt of the bolt assembly allows the outer bolt to project outwardly and to lock the container notwithstanding the fact that the bolt has not been reset by the operator of the lock. The bolt is self-contained and can be substituted into many existing lock mechanisms of the mechanical type and into some of the existing electronic dial combination locks, to provide the auto-locking enhancement.
Claims22
A self locking dial combination lock comprising:
- a bolt extending from a lock housing of said combination lock and having an extended, securing position and a withdrawn releasing position;
- a bolt withdrawal mechanism responsive to a manually operated input for withdrawing said bolt from said extended position to said withdrawn position;
- said bolt comprising:
- a first member connected to and responsive to said bolt withdrawal mechanism for displacement relative to said lock;
- a second member associated with and moveable with respect to said first member;
- a latch interconnecting said first member and said second member for capturing one of said members relative to another of said members for movement of said members in a first direction as a unit and for releasing said members for movement in a second direction independently;
- a latch operating mechanism for operating said latch for releasing said members,
- whereby said second member is released to extend to said extended securing position when said latch operating mechanism is displaced by engagement with a rigid interfering structure, while said first member remains in said withdrawn position.
A self locking dial combination lock comprising:
- a bolt displaceable between a withdrawn and extended positions;
- a bolt operating mechanism;
- said bolt comprising a base member connected to and responsive to said bolt operating mechanism for withdrawal and extension and a resiliently biased extension member connectable to and displaceable with said base member;
- a latch for connecting said base member and said extension member for movement as a unitary structure in a first direction and for releasing said base and extension members for movement independently in a second direction;
- a latch control member for unlatching said latch, said latch control member exposed though one face of said bolt to an interfering structure exterior to said lock and engageable with said structure to effect unlatching of said latch and permitting extension of said extension member.
A self locking dial combination lock comprising:
- a bolt extending from a lock housing and moveable between an extended, securing position and a withdrawn, releasing position;
- a bolt withdrawal mechanism driven by and operative responsive to a manually rotated dial for withdrawing said bolt from said extended position to said withdrawn position;
- said bolt comprising a base bolt and an extension bolt, said extension bolt displaceable relative to said base bolt;
- a latch surface within said extension bolt;
- a latch disposed within said base bolt and engagable with said latch surface of said extension bolt;
- a releasing member carried by and moveable relative to said extension bolt engageable with said latch for removing said latch from engagement with said latch surface, whereby said movement of said releasing member unlatches said base bolt from said extension bolt permitting said extension bolt to move independently of said base bolt.
Dependencies are inferred from the claim text.