Cylinder lock

Details Cylinder lock Cylinder lock

1977-12-13

1980-01-29

Wolfe, Robert L.

Locks

Operating mechanism

Key

70378, 70406, 70409, 70419, E05B 1514, E05B 1902, E05B 2704

Patent

active

RE0301981

ABSTRACT:
A cylinder lock with a key plug rotatably mounted in the cylinder shell is described. The key plug has a plurality of tumblers that are set by the V bits of a key inserted in the key plug. The key is cut at three different levels and cut at three different angles. Each tumbler in the key plug may be positioned by the properly bitted key reciprocally to clear the shear line and also positioned rotationally to allow the fence to be cammed out of engagement with the cylinder shell. The key plug may then be rotated.
A side bar cylinder lock is also described with the same key cut at three different levels and cut at three different angles. The tumblers are positioned reciprocally and rotationally by the properly bitted key to allow the fence to be cammed out of engagement with the cylinder shell. The key plug may then be rotated.

REFERENCES:
patent: 457677 (1891-08-01), Stein
patent: 688070 (1901-12-01), Denn
patent: 1095431 (1914-05-01), Sprague
patent: 1222545 (1917-04-01), Gross
patent: 1340804 (1920-05-01), Thompson
patent: 1610497 (1926-12-01), Douglas
patent: 1932706 (1933-10-01), Neer
patent: 2023847 (1935-12-01), Liss
patent: 2408283 (1946-09-01), Wollin
patent: 2426104 (1947-08-01), Johnstone
patent: 2729091 (1956-01-01), Taylor
patent: 3035433 (1962-05-01), Testa
patent: 3070987 (1963-01-01), Baker
patent: 3367156 (1968-02-01), Johnstone

Affiliated with

Also associated with

Rating

Cylinder lock does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cylinder lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cylinder lock will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-874227