Screw lock assembly

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Description

FIG. 1 is a perspective view of the screw lock assembly including a screw and cup washer (bracketed in drawing) utilizing the new design of my invention;

FIG. 2 is a side view of the screw lock assembly with the _cup washer properly positioned for use;

FIG. 3 is a top view of the screw lock assembly taken from a direction looking in from the left _of FIG. 2; and

FIG. 4 is a bottom view of the screw lock assembly taken looking in the direction to the right in FIG. 2.

Referenced Cited
U.S. Patent Documents
1262975 April 1918 Pierce
2169460 August 1939 Broughton
3060785 October 1962 Corlett et al.
Other references
  • Machine Design, The Fasteners Book Issue, Mar. 21, 1963, p. 334, Lag Bolt at upper right of page.
Patent History
Patent number: D256553
Type: Grant
Filed: Mar 11, 1976
Date of Patent: Aug 26, 1980
Inventor: Paul R. Fayle (Lexington, VA)
Primary Examiner: Alan P. Douglas
Attorney: Allan M. Lowe
Application Number: 5/665,745
Classifications
Current U.S. Class: D/8387
International Classification: D0808;