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US 4,643,007 AGranted
Deadbolt locking system
AssigneeIlco Unican Inc.
InventorsAaron M. Fish, Jean-Paul Dausseing
Life of this patent
Estimating the term…
Abstract
A positive deadbolt locking system having a spring-biased deadbolt normally biased toward a retracted unlocked position or selectively and alternatively toward an overcenter locked position. The deadbolt is selectively in the fully unlocked or fully locked position of the locking system.
Claims14
A deadbolt locking system comprising:
- a key cylinder,
- a key cylinder housing defining an opening receiving and rotatably supporting said key cylinder,
- a hub rotatably mounted on said key cylinder housing,
- a key cylinder lock cam operated by the key cylinder for rotating and counter-rotating said hub,
- a deadbolt mounted in a sleeve for reciprocal movement on a reciprocal axis,
- a link pivotally connected between said hub and said deadbolt and moving to overcenter positions above and below said reciprocal axis of said deadbolt,
- said key cylinder housing defining a stop engaging said hub defining the extended and locked position of said deadbolt, and
- a second stop defining the retracted and unlocked position of said deadbolt and overcenter positions of said link when said hub is rotated and counter-rotated by said key cylinder cam,
- and resilient means compressively mounted between said sleeve and said deadbolt to selectively and alternatively bias said link to the overcenter positions and retain said deadbolt in the locked or unlocked positions.
6 more elements
A deadbolt locking system comprising:
- a door,
- an inside lock body mounted on the inside of the door,
- an outside lock body mounted on the outside of the door coaxially aligned with the inside lock body,
- a key cylinder housing received in axially aligned openings in said lock bodies,
- a key cylinder mounted concentrically within said key cylinder housing,
- a key cylinder lock cam on said key cylinder,
- a hub mounted for concentrically rotating on said key cylinder housing,
- a deadbolt reciprocatively mounted radially to said hub and defining a reciprocating axis,
- a link pivotally connected between said hub and said deadbolt with the hub connection rotating to positions above and below said reciprocating axis,
- resilient means including a spring biasing said deadbolt toward said hub selectively and alternatively to locked and unlocked positions,
- means defining spring seats on said door and said deadbolt, and
- abutment means on said key cylinder housing limiting the rotational movement of said hub in a clockwise and a counterclockwise direction with the hub connection in the above and below center positions and thereby defining the extended and retracted positions of said deadbolt and to assure complete locking or unlocking of said locking system.
9 more elements
A deadbolt system comprising:
- an inside lock body and an outside lock body each defining an opening with said openings axially aligned,
- a key cylinder housing non-rotatably received in said openings,
- a key cylinder received in said housing,
- a key cylinder lock cam on said key cylinder for rotation with said key cylinder,
- a hub rotatably mounted on said key cylinder housing,
- a deadbolt reciprocably mounted radial to said hub,
- a link pivotally connected to said deadbolt and pivotally connected eccentrically to said hub,
- resilient means normally biasing said deadbolt towards said hub and rotating the pivotal connection between said link and hub to an overcenter and an undercenter position as a toggle, and
- abutment means on said key cylinder housing selectively and alternatively engaging said hub for limiting rotational clockwise and counterclockwise rotation of said hub and defining the extended or locked position and the retracted or unlocked position of said deadbolt,
- said resilient means biasing said hub selectively and alternatively to engaging position with said abutment means on said key cylinder housing, in which said abutment means defines fully locked and unlocked positions of said deadbolt with said link connection with said hub in the overcenter and undercenter positions.
7 more elements
Dependencies are inferred from the claim text.