Scaffolding coupling pin

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Description

FIG. 1 is a perspective view of the scaffolding coupling pin, showing my new design;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image;

FIG. 3 is a rear side elevational view thereof;

FIG. 4 is a front side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D224996 October 1972 Putterman
2758379 August 1956 Senk
3000656 September 1961 Hollaender
3120941 February 1964 Cameron
3190405 June 1965 Squire
3346283 October 1967 Squire
3395501 August 1968 Davidson, Jr. et al.
3527320 September 1970 Cunningham
3747689 July 1973 Frederick
3759623 September 1973 Hesse
4090798 May 23, 1978 Barton
4236846 December 2, 1980 Barton
4586844 May 6, 1986 Hammonds
Foreign Patent Documents
2024508 December 1971 DEX
Other references
  • GKN Kwikform, Inc. "Aluminium Step & Span Access System" brochure (undated). GKN Kwikform, Inc. "Kwiktower Safety and Assembly Instructions" brochure (undated). GKN Kwikform, Inc. "The Aluminum Stairway & Span Scaffolding System" brochure (undated). Photographs of cast coupling pin labeled AR-1, AR-2 and AR-3 (undated).
Patent History
Patent number: D302520
Type: Grant
Filed: Apr 7, 1986
Date of Patent: Aug 1, 1989
Assignee: Saf-T-Green Manufacturing Corporation (Atlanta, GA)
Inventor: Richard H. Werner (Atlanta, GA)
Primary Examiner: B. J. Bullock
Assistant Examiner: Dominic Simone
Law Firm: Kilpatrick & Cody
Application Number: 6/850,882
Classifications
Current U.S. Class: D/8382