Jaw insert for power tongs

- Martin-Decker, Inc.

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Description

FIG. 1 is an enlarged top-front perspective view of a jaw insert for power tongs, showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a rear elevational view;

FIG. 5 is a right side elevational view;

FIG. 6 is a bottom plan view; and

FIG. 7 is a left side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D29767 December 1898 Vaughan
D187745 April 1960 Bird
D287928 January 27, 1987 Watanabe
2150611 March 1939 Speck
2166449 July 1939 Sharpe
2558440 June 1951 Johnson
2733624 February 1956 Dowidat
3916735 November 1975 Evans
Other references
  • Aero Space America, 6/1985, inside back cover, Wrench.
Patent History
Patent number: D314896
Type: Grant
Filed: Oct 15, 1987
Date of Patent: Feb 26, 1991
Assignee: Martin-Decker, Inc.
Inventor: Charles W. Haynes (Marshall, TX)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Gary D. Watson
Attorney: William P. Green
Application Number: 7/108,881
Classifications
Current U.S. Class: D 8/22; D 8/61