Grinding pin

Description

FIG. 1 illustrates a top front perspective view of a grinding pin;

FIG. 2 illustrates a top plan view of the pin of FIG. 1;

FIG. 3 illustrates a bottom plan view of the pin of FIG. 1;

FIG. 4 illustrates a front elevational view of the pin of FIG. 1 the rear elevational view being identical thereto; and,

FIG. 5 illustrates a side view of the pin of FIG. 1 the opposite side elevational view being identical thereto.

Referenced Cited
U.S. Patent Documents
D350887 September 27, 1994 Sjolander
382340 May 1888 Vinton
1088154 February 1914 Keller
1474025 November 1923 Emerson
1488230 March 1924 Cundiff
4611438 September 16, 1986 Siden
4811843 March 14, 1989 Stribiak
5125777 June 30, 1992 Osawa
Foreign Patent Documents
74091 March 1994 CAX
Other references
  • Sandvik Coromat rock drilling tools, Product Catalogue, p. 140, 1989.
Patent History
Patent number: D383659
Type: Grant
Filed: Jun 9, 1995
Date of Patent: Sep 16, 1997
Inventor: Murray Norman (North Bay, Ontario)
Primary Examiner: James Gandy
Assistant Examiner: Robert M. Spear
Law Firm: Evenson, McKeown, Edwards & Lenahan P.L.L.C.
Application Number: 0/40,097
Classifications
Current U.S. Class: D 8/70
International Classification: 0803;