Electromagnetic integrative door locking device

Details Electromagnetic integrative door locking device Electromagnetic integrative door locking device

2007-11-20

2007-11-20

Mitchell, Katherine (Department: 3677)

Locks

Operating mechanism

Using a powered device

C070S279100, C070S277000, C070S278700, C292S144000

Reexamination Certificate

active

10787723

ABSTRACT:
Described herein is a locking device which integrates mechanical components in a hollow metal door frame with electronic access components. The preferred embodiment comprises a magnetic field generating device, an appropriately shaped metal solenoid housing and a cam retaining locking bar attached to a hollow stem. The electronic components override the original mechanical components of the lock to create a fail-safe situation in which the original mechanical lock may be disabled. In the preferred embodiment, my upgraded locking device can be re-installed within a hollow door frame, thereby minimizing service costs and doorframe modification costs.

REFERENCES:
patent: 3677043 (1972-07-01), Cox
patent: 4099752 (1978-07-01), Geringer
patent: 4677834 (1987-07-01), Hicks
patent: 4691542 (1987-09-01), Young
patent: 4784415 (1988-11-01), Malaval
patent: 4949563 (1990-08-01), Gerard et al.
patent: 5100184 (1992-03-01), Schmitt
patent: 5474348 (1995-12-01), Palmer et al.
patent: 5636880 (1997-06-01), Miller et al.

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