Locks – Operating mechanism – Key
Reexamination Certificate
2005-09-02
2008-11-04
Gall, Lloyd A (Department: 3673)
Locks
Operating mechanism
Key
C070S403000, C070S417000, C070S419000
Reexamination Certificate
active
07444846
ABSTRACT:
A drill resistant lock cylinder is useful for resisting attempts to defeat the cylinder using locks or picks. The cylinder includes a cylinder housing (105) having a central axis. Two pinion cylinders (115, 125) are positioned inside the cylinder housing (105) along the central axis. A combination pin cylinder (120) is positioned along the central axis between the two pinion cylinders (115, 125), and the combination pin cylinder (120) and each pinion cylinder (115, 125) includes axial pinholes (220) there through. Pins (130) located inside the axial pinholes (220) in the combination pin cylinder (120) and the pinion cylinders (115, 125) establish two shear lines along axial ends of the pinion cylinders (115, 125).
REFERENCES:
patent: 1409094 (1922-03-01), Greenison
patent: 2015735 (1935-10-01), Thomalla
patent: 2090114 (1937-08-01), Deutsch
patent: 2993361 (1961-07-01), Van Lahr
patent: 3380268 (1968-04-01), Perrill
patent: 4099396 (1978-07-01), Kerr
patent: 4653297 (1987-03-01), Moorhouse
patent: 4735069 (1988-04-01), Steinbach
patent: 4802354 (1989-02-01), Johnson
patent: 4858456 (1989-08-01), McGee, Sr.
patent: 5018376 (1991-05-01), Lee
patent: 2002/0116968 (2002-08-01), Shvarts
patent: 2003/0154752 (2003-08-01), Price
patent: 2004/0003634 (2004-01-01), Keller
patent: 2005/0217329 (2005-10-01), Chang
patent: 2007/0033975 (2007-02-01), Liu
patent: 1 048 288 (1979-02-01), None
Gall Lloyd A
Stewart Donald Charles
The Farrell Law Firm P.C.
LandOfFree
Drill resistant lock cylinder does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drill resistant lock cylinder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill resistant lock cylinder will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4043821