Drill shaft head

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Description

FIG. 1 is a perspective view of a drill shaft head, showing our new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being identical thereto;

FIG. 3 is a side elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
2159162 May 1939 Johnson
2693631 November 1954 Redman
3958887 May 25, 1976 Bracey et al.
3980409 September 14, 1976 Turner
4088008 May 9, 1978 Watling et al.
Patent History
Patent number: D275862
Type: Grant
Filed: Dec 9, 1981
Date of Patent: Oct 9, 1984
Assignee: Brainard-Kilman Drill Company (Tucker, GA)
Inventors: John N. Kilman, III (Stone Mountain, GA), Phillip L. Myers (Stone Mountain, GA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Jones & Askew
Application Number: 6/328,915
Classifications
Current U.S. Class: Element Or Attachment (D15/138); D23/42