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US 7,174,757 B1Granted
Lock cylinder and key set
OwnerYuan-Cheng Tsenginventor
Life of this patent
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Abstract
Disclosed is a lock cylinder and key set, which includes a lock cylinder, which has a keyway with two keyholes separated by a partition, and a key, which has two blades insertable into the two keyholes of the keyway for acting against respective pins in the lock cylinder to unlock the lock cylinder.
Claims5
A lock cylinder and key set comprising:
- a longitudinally extending lock cylinder having a cross-sectionally arcuately contoured keyway formed therein, said lock cylinder having a plurality of biased locking pins for displacement in a radial direction with respect to a longitudinal axis of said lock cylinder;
- a longitudinally extending partition member positioned in said keyway, said partition member having a plurality of partition member recesses formed within an upper surface of said partition member for receipt and obstruction of corresponding ones of said biased locking pins;
- and
- a bifurcated key member having an arcuate cross-section for mating with said keyway when said key member is slidingly displaced within said keyway on opposing sides of said partition member, said key member having a plurality of recesses formed within an outer surface of said key member for engaging therein predetermined ones of said biased locking pins.
1 more element
Dependencies are inferred from the claim text.