Combined safety and tamper proof bolt and nut

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Description

FIG. 1 is a perspective view of a combined safety and tamper proof bolt and nut showing the new design viewed with the bolt member positioned uppermost;

FIG. 2 is a perspective view reverse to that of FIG. 1, viewed with the nut member positioned uppermost;

FIG. 3 is a perspective view of the bolt apart from the nut;

FIG. 4 is a perspective view of the nut apart from the bolt;

FIG. 5 is a top plan view of the bolt;

FIG. 6 is a bottom plan view of the nut apart from the bolt; and,

FIG. 7 is a top plan view of a second embodiment of bolt based on the design shown in FIG. 1.

The undisclosed views of the second embodiment are similar in appearance to the views shown in the first embodiment except for the presence of the three holes. The claimed design is shown detached for clarity of illustration.

Referenced Cited
U.S. Patent Documents
D268006 February 22, 1983 Wollar
Other references
  • Machine Design, p. 51, tapping screw, located in center of page, Mar. 1963.
Patent History
Patent number: D414403
Type: Grant
Filed: Oct 30, 1997
Date of Patent: Sep 28, 1999
Inventor: Robert Coven (Queens Village, NY)
Primary Examiner: Holly Baynham
Attorney: Nicholas J. Garofalo
Application Number: 0/78,556
Classifications
Current U.S. Class: D/8387
International Classification: 0808;