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
D278880 May 21, 1985 Widen
1782464 November 1930 Falk
1961586 June 1934 Heyer
2059129 October 1936 Maxwell et al.
2202329 May 1940 Braune
2803959 August 1957 Schlage
2807158 September 1957 Best
3605463 September 1971 Epstein
4114411 September 19, 1978 Schlage
4275577 June 30, 1981 Castaldo
4683740 August 4, 1987 Errani
4723427 February 9, 1988 Oliver
4787225 November 29, 1988 Hauser
4899563 February 13, 1990 Martin
Foreign Patent Documents
258614 April 1965 AUX
220505 August 1961 ATX
305953 March 1989 EPX
884937 December 1961 GBX
1355188 June 1974 GBX
Other references
  • Sargent "Cylinders & Components" Catalogue (1980) p. 8 Cylinder Barrel.
Patent History
Patent number: D328237
Type: Grant
Filed: Mar 29, 1991
Date of Patent: Jul 28, 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: 7/678,612
Classifications
Current U.S. Class: D/8343