Front face of a key plug

- Best Lock Corporation
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Description

FIG. 1 is a front elevational view of a front face of a key plug showing our new design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
1961586 June 1934 Heyer
2202329 May 1940 Braune
2807158 September 1957 Best
4114411 September 19, 1978 Schlage
4275577 June 30, 1981 Castaldo
4723427 February 9, 1988 Oliver
4899563 February 13, 1990 Martin
Foreign Patent Documents
884937 December 1961 GBX
Other references
  • Sargent "Cylinders & Components" Catalogue (1980) p. 8 Cylinder Barrel.
Patent History
Patent number: D328022
Type: Grant
Filed: Mar 29, 1991
Date of Patent: Jul 21, 1992
Assignee: Best Lock Corporation (Indianapolis, IN)
Inventors: Walter E. Best (Indianapolis, IN), Timothy R. Bjornson (Indianapolis, IN), James W. Borgmann (Carmel, IN), Gary R. Jacobs (Indianapolis, IN)
Primary Examiner: Brian N. Vinson
Law Firm: Barnes & Thornburg
Application Number: 7/678,625
Classifications
Current U.S. Class: D/8343