E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 37/08 (2006.01)
Patent
CA 2119985
ABSTRACT OF THE DISCLOSURE The combination lock includes a housing with a lock dial shaft rotatably mounted thereto, a lock bolt slidably mounted to the housing, a fence lever pivotally coupled to the lock bolt, a tension spring constantly urging the fence lever into an operative, lock bolt displacing position thereof, an assembly of gated tumbler wheels rotatable by the lock dial shaft and a slotted disc mounted on the tumbler wheels assembly. The fence lever is adapted to close against the gated tumbler wheels when in alignment therewith and thereby unable the displacement of the lock bolt by the fence lever. A displaceable spring cam plate is coupled to a cam disc associated with the slotted disc so that on every revolution of the cam disc the plate becomes displaced a short distance. A second spring is coupled between the fence lever and the cam plate, effective, in the non-displaced position of the plate, to restrain the pivoted movement of the fence lever under the tension of its spring, and in the displaced position of the plate, to allow the pivoted movement of the fence lever into operative position thereof.
Ilco Unican Inc.
Swabey Ogilvy Renault
LandOfFree
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