Strap adjustment buckle for helmets

- Illinois Tool Works Inc.
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Description

FIG. 1 is a rear perspective view of a strap adjustment buckle for helmets showing my design, the straps being shown in broken lines for illustrative purposes only;

FIG. 2 is a front elevational view thereof;

FIG. 3 is an end elevational view taken from the left side of FIG. 2;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof; and,

Referenced Cited
U.S. Patent Documents
D328044 July 21, 1992 Murai
3279019 October 1966 Eubank et al.
4044400 August 30, 1977 Lewicki et al.
4637099 January 20, 1987 Kasai
4897888 February 6, 1990 Broersma et al.
5077839 January 7, 1992 Keller
Patent History
Patent number: D344610
Type: Grant
Filed: May 1, 1992
Date of Patent: Feb 22, 1994
Assignee: Illinois Tool Works Inc. (Glenview, IL)
Inventor: Steven C. Keller (Island Lake, IL)
Primary Examiner: B. J. Bullock
Attorneys: T. W. Buckman, J. P. O'Brien
Application Number: 7/877,159
Classifications
Current U.S. Class: D29/16; D/8383; Slip Clutch Or Slide Type Buckle (24) (D11/218)