Locking device for a rigging screw

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Description

FIG. 1 is a front perspective view of a locking device for a rigging screw showing my new design;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a rear perspective view thereof.

Referenced Cited
U.S. Patent Documents
2746701 May 1956 Carpenter et al.
3227030 January 1966 Preziosi
3326580 June 1967 Munier et al.
3391954 July 1968 Callahan
Patent History
Patent number: D284834
Type: Grant
Filed: Sep 19, 1983
Date of Patent: Jul 29, 1986
Inventor: Bo T. Hoffstrom (S-161 45 Bromma)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Law Firm: Frishauf, Holtz, Goodman & Woodward
Application Number: 6/533,504
Classifications
Current U.S. Class: D/8394; D/8330; D/8382