Hexagonal headed bolt

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Description

FIG. 1 is a plan view of a hexagonal headed bolt bearing the design.

FIG. 2 is an elevation view thereof.

FIG. 3 is a vertical sectional view thereof.

Referenced Cited
U.S. Patent Documents
D3883 March 1870 Field
2397216 March 1946 Stellin
2556155 June 1951 Stellin
Other references
  • Design Fasteners Book, vol. 35, Mar. 21, 1963, p. 6, first column, Hexagon bolt item.
Patent History
Patent number: D245147
Type: Grant
Filed: Oct 7, 1975
Date of Patent: Jul 26, 1977
Assignee: Kabushiki Kaisha Izumi Seisakusho (Osaka)
Inventor: Toru Ono (Izumi)
Primary Examiner: William N. Wertman
Application Number: 5/620,339
Classifications
Current U.S. Class: D/8387
International Classification: D0808;