Locking screw

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Description

FIG. 1 is a perspective view of a locking screw showing my new design.

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a front view thereof; and

FIG. 5 is a bottom view thereof.

Referenced Cited
U.S. Patent Documents
D215545 September 1969 Huska
1439657 December 1922 Zollner
1642042 September 1927 Polk
2011861 August 1935 Knumann
2166346 July 1939 Douglas
2747236 May 1956 French
3001178 September 1961 Swengel
3152855 October 1964 Crowther
3246283 April 1966 Huska
3304392 February 1967 Isler
3915545 October 1975 Salto
3989345 November 2, 1976 DeVito
4004846 January 25, 1977 Woertz
4454382 June 12, 1984 Borne et al.
4476400 October 9, 1984 Jo et al.
4643513 February 17, 1987 Martin
4832628 May 23, 1989 Huska
4907989 March 13, 1990 Huska
Other references
  • Eskay Catalog 1980 Stock List; p. 31; Round Washer Head (2nd from bottom, 2nd col.).
Patent History
Patent number: D310956
Type: Grant
Filed: Jun 22, 1987
Date of Patent: Oct 2, 1990
Inventor: Paul Huska (Los Ageles, CA)
Primary Examiner: B. J. Bullock
Law Firm: Cislo & Thomas
Application Number: 7/64,443
Classifications
Current U.S. Class: D/8387