Key head

- Chicago Lock Company
Description

FIG. 1 is a top, front, and right side perspective view of a key head showing my new design;

FIG. 2 is an enlarged right side elevational view thereof;

FIG. 3 is an enlarged left side elevational view thereof;

FIG. 4 is an enlarged front elevational view thereof;

FIG. 5 is an enlarged rear elevational view thereof;

FIG. 6 is an enlarged bottom plan view thereof; and,

FIG. 7 is an enlarged top plan view thereof.

The broken-line disclosure of a portion of the key shank and bow is for illustrative purposes only and forms no part of the claimed design.

Referenced Cited
U.S. Patent Documents
D244081 April 19, 1977 Steinbach
D253160 October 16, 1979 Steinbach
1984202 December 1934 Shinn
3251205 May 1966 Kerr
3267706 August 1966 Kerr
4619122 October 28, 1986 Simpson
4838060 June 13, 1989 Hutzenlank
4870842 October 3, 1989 Plumer
Patent History
Patent number: D330501
Type: Grant
Filed: Nov 27, 1991
Date of Patent: Oct 27, 1992
Assignee: Chicago Lock Company (Chicago, IL)
Inventor: Robert L. Steinbach (Glendale Heights, IL)
Primary Examiner: Brian N. Vinson
Attorneys: Basil E. Demeur, Alan B. Samlan
Application Number: 7/799,648
Classifications
Current U.S. Class: D/8347