Locks – Operating mechanism – Key
Patent
1987-08-14
1988-07-12
Wolfe, Robert L.
Locks
Operating mechanism
Key
70134, 29216923, 292DIG57, E05B 1708
Patent
active
047561785
ABSTRACT:
A lever type lockset with a rolling housing within a main housing. The roller housing normally only touches the main housing at the rollers and also connects to the latch portion of a lockset. The side plates of the roller are constructed separately from the roller housing so that they can be made thicker and more durable. The inner and outer spindle each have a curved elbow on it which is shaped somewhat like two boomerangs joined together on adjacent distal ends for minimizing local stress concentrations. The side plate also has a curved surface which is designed to offer minimal resistance to the elbows so that the handle can be turned with very little resistance.
REFERENCES:
patent: 1876079 (1932-09-01), Schlage
patent: 2953405 (1960-09-01), Kubik
patent: 4418949 (1983-12-01), Horgan
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