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US 2002/0124604 A1Published application
Lock
AssigneeBanham Patent Locks Limited
InventorBrian Edward Cowper
Life of this patent
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AssigneeBanham Patent Locks Limited
InventorBrian Edward Cowper
Estimating the term…
A lock for a door (10) comprises a casing (11), a bolt (55) operable to extend from or retract into the casing, a pivoted operating handle (36) operable at one side of the door to retract the bolt, lock means (28) for key operation at the other side of the door, and blocking means (81) to prevent operation of the handle to retract the bolt. In a locked closed position of the door, the bolt (55) is extended and with the blocking means operated, key operation of the exterior lock means (28) both retracts the bolt and also de-actuates the blocking means. At the inside of the door further key operable lock means (39, 40) are provided solely to operate and, if required to de-actuate, the blocking means. A casting (38) secured in the casing mounts the further lock means (39, 40), provides part-bearings (38b; 138b) for pivot rods (41, 43) of the handle (36) and a bolt locking element (44), provides a guide slot (138d) for a spring-like connector (49) linking the handle to the bolt locking element, and provides a pair of arms (66) between which slides a bolt release member (69) and against which bears one end of a biasing spring around part of the bolt release member.
A lock for a wing movable between respective open and closed positions relative to a frame comprising a casing, a bolt operable to extend from or to retract into said casing, an operating member arranged to be operable at one side of the wing, in use, to effect retraction of the bolt, lock means arranged, in use, for key operation at the other side of the wing, and blocking means operable, in use, to prevent operation of the operating member to retract the bolt, the arrangement being such that, in use, in a locked, closed position of the wing said bolt is extended and said blocking means, if operated, prevents retraction of the bolt by said operating member, key operation of said lock means de-actuating said blocking means, if operated.
A lock for a wing movable between open and closed positions relative to a frame comprising a casing, a bolt operable to extend from or to retract into said casing, an operating member at one side of the wing, in use, arranged to be pivotally operable to retract the bolt, a pivoted locking member at least partly within the casing, arranged to deadlock the bolt when it is in its extended position, and an element providing within the casing, either at least part of a bearing surface for a pivot of the operating member or a pivot of the locking member, or at least parts of respective bearing surfaces for respective pivots of the operating member and the locking member.
Dependencies are inferred from the claim text.