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US 7,207,199 B2Granted
Dead locking deadbolt
AssigneeMaster Lock Company LLC
InventorsJerry Smith, Mike Enslow
Life of this patent
Estimating the term…
Abstract
A deadbolt mechanism including a lock out mechanism that functions to disable the operation of the deadbolt from at least one side of the deadbolt mechanism. The deadbolt mechanism includes a deadbolt, key cylinder, housing, turn knob and a shaft that connects the key cylinder and turn knob. To place the deadbolt mechanism in lock out mode, the turn knob is moved to the locked positioned and then pulled outward away from the door. By pulling the knob outward, the shaft engages a portion of the housing which prevents rotation of the shaft and thereby prevents movement of the deadbolt from the locked position.
Claims24
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions;
- and
- (ii) a shaft housing including an opening for receiving said shaft and a collar surrounding at least a portion of said opening;
- wherein said head portion of said shaft can be selectively moved into and out of nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage one or more portions of said collar, thereby preventing rotation of said shaft.
5 more elements
A deadbolt mechanism comprising:
- a deadbolt;
- at least two deadbolt manipulation mechanisms, wherein at least one of said deadbolt manipulation mechanisms is a knob and at least one of said deadbolt manipulation mechanisms includes a locking mechanism;
- a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft comprising an indication mechanism and a head portion including a set of depressions;
- and
- a shaft housing including an opening for receiving said shaft and a collar, said collar including a set of protuberances;
- whereby said set of depressions and said set of protuberances can be selectively placed in an interlocking relationship to prevent operation of said deadbolt and said indication mechanism provides visual indication as to whether or not said set of depressions and said set of protuberances are in interlocking relationship.
3 more elements
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions;
- and
- (ii) a collar including at least one protrusion, said collar being disposed around the shaft;
- wherein said head portion of said shaft can be selectively moved into nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage at least one protrusion of said collar, thereby preventing rotation of said shaft and can be moved such that the head portion is disposed completely outside said collar, thereby allowing rotation of the shaft.
5 more elements
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions;
- and
- (ii) a collar including at least one protrusion that is formed integrally with the collar and extends radially inward from an inner circumferential surface of the collar, said collar being disposed around the shaft;
- wherein said head portion of said shaft can be selectively moved into and out of nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage said at least one integrally formed protrusion of said collar, thereby preventing rotation of said shaft.
5 more elements
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions;
- and
- (ii) a collar including at least one protrusion that is formed integrally with the collar and has a substantially constant cross-section in a direction of an axis of the collar, said collar being disposed around the shaft;
- wherein said head portion of said shaft can be selectively moved into and out of nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage said at least one integrally formed protrusion of said collar, thereby preventing rotation of said shaft.
5 more elements
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions;
- and
- (ii) a collar including at least one protrusion that is formed integrally with the collar and extends along an entire length of the collar, said collar being disposed around the shaft;
- wherein said head portion of said shaft can be selectively moved into and out of nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage said at least one integrally formed protrusion of said collar, thereby preventing rotation of said shaft.
5 more elements
A deadbolt mechanism comprising:
- (a) a deadbolt;
- (b) at least two deadbolt manipulation mechanisms;
- and
- (c) a lockout mechanism comprising:
- (i) a shaft connecting said at least two deadbolt manipulation mechanisms, said shaft including a head portion including one or more depressions wherein the one or more depressions that extend along an entire length of the head portion;
- and
- (ii) a collar including at least one protrusion, said collar being disposed around the shaft;
- wherein said head portion of said shaft can be selectively moved into and out of nesting engagement with said collar such that when said head portion is nested within said collar, said one or more depressions engage said at least one protrusion of said collar, thereby preventing rotation of said shaft.
5 more elements
Dependencies are inferred from the claim text.