Locks – Special application – For control and machine elements
Reexamination Certificate
2008-04-22
2008-04-22
Gall, Lloyd A. (Department: 3673)
Locks
Special application
For control and machine elements
C070S210000, C070S360000, C292S207000, C292S336300
Reexamination Certificate
active
07360381
ABSTRACT:
A locking device for securing to a door or the like and including a rotatable knob adapted for mounting at a front surface of the door and having locked and unlocked positions, a locking member adapted for positioning at an opposite rear surface of the door and in alignment with the rotatable knob and a key-controlled lock supported at the front surface of the door and having locked and unlocked positions. The locking member includes a locking bar and an integral latch plate having a free end. The locking bar is for engagement with a door striker in the locked position. The key-controlled lock is spacedly disposed from the locking member and adapted for engaging, inside the door, with the free end of the latch plate. The key-controlled lock, in its locked position, engages with the latch plate to prevent rotation of the rotatable knob, and in its unlocked position, disengages from the latch plate to enable rotation of the rotatable knob from its locked position to its unlocked position.
REFERENCES:
patent: 1281536 (1918-10-01), Doyle
patent: 3665737 (1972-05-01), Reese
patent: 3829139 (1974-08-01), Storlie
patent: 4040653 (1977-08-01), Takahashi
patent: 4380915 (1983-04-01), Kincaid et al.
patent: 4492394 (1985-01-01), Dignan
patent: 4991414 (1991-02-01), Moore et al.
patent: 5015019 (1991-05-01), Razdolsky
patent: 5526660 (1996-06-01), Bennett et al.
patent: 5913908 (1999-06-01), Czipri
patent: 6178789 (2001-01-01), Finkelstein et al.
patent: 6357268 (2002-03-01), Takimoto
patent: 6418761 (2002-07-01), Wytcherley et al.
patent: 6623052 (2003-09-01), Hansen
patent: 2003/0000266 (2003-01-01), Molzer
patent: 2004/0007031 (2004-01-01), Molzer et al.
Compu-Guard, Inc.
Gall Lloyd A.
Salter & Michaelson
LandOfFree
Security 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 Security lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Security lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2784879