Electromagnetic door lock

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Description

FIG. 1 is a front elevational view of an electromagnetic door lock showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view thereof; and,

FIG. 6 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
4871204 October 3, 1989 Cook et al.
5016929 May 21, 1991 Frolov
5033779 July 23, 1991 Geringer et al.
Other references
  • Dynalock Series 3000 Advertisement, Jan. 1990 Doors & Hardware Magazine. Securitron Magnalock Advertisement, Jan. 1990, Access Control Magazine.
Patent History
Patent number: D345093
Type: Grant
Filed: Jun 19, 1992
Date of Patent: Mar 15, 1994
Inventor: Frederick F. Fischbach (Ann Arbor, MI)
Primary Examiner: Brian N. Vinson
Attorney: James M. Deimen
Application Number: 7/901,581
Classifications
Current U.S. Class: D/8343