Tip with lobes

- Kennametal Inc.
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Description

FIG. 1 is a top elevational view of one specific embodiment of the tip;

FIG. 2 is a side elevational view of the tip of FIG. 1;

FIG. 3 is a side elevational view of the tip of FIG. 1 oriented at about 30 degrees from the view of FIG. 2;

FIG. 4 is a bottom elevational view of the tip of FIG. 3;

FIG. 5 is a top elevational view of another specific embodiment of the tip;

FIG. 6 is a side elevational view of the tip of FIG. 5;

FIG. 7 is a side elevational view of the tip of FIG. 5 oriented at about 90 degrees from the view of FIG. 6; and,

FIG. 8 is a bottom elevational view of the tip of FIG. 7.

Referenced Cited
U.S. Patent Documents
3356418 December 1967 Healey et al.
3830546 August 1974 Kniff
4497520 February 5, 1985 Ojanen
4725099 February 16, 1988 Penkunas et al.
4729603 March 8, 1988 Elfgen
4865392 September 12, 1989 Penkunas et al.
4911503 March 27, 1990 Shiffler et al.
4911504 March 27, 1990 Shiffler et al.
4938538 July 3, 1990 Larsson et al.
4981328 January 1, 1991 Stiffler et al.
5054217 October 8, 1991 Nilsson et al.
5131725 July 21, 1992 Rowlett et al.
5141289 August 25, 1992 Stiffler
5219209 June 15, 1993 Prizzi et al.
Foreign Patent Documents
0052978 June 1982 EPX
0122893 October 1984 EPX
0160757 November 1985 EPX
2846744 April 1980 DEX
3510072 March 1985 DEX
825924 September 1975 SUX
519538 July 1976 SUX
751991 February 1978 SUX
899916 January 1982 SUX
Other references
  • Carbide tip depicted in Multi-Metals Dwg. C-1445-7 (Sep. 5, 1973). Carbide tip depicted in American Mine Tool Dwg. T-104-76 (Sep. 14, 1982). Carbide tip depicted in Kennametal Dwg 921-01135 (Aug. 18, 1983). Carbide tip depicted in American Mine Tool Dwg T-104-13 (Nov. 30, 1982). Carbide tip depicted in American Mine Tool Dwg. T-104-14 (Aug. 31, 1984). Carbide tip depicted in Kennametal Dwg. DEV-C-1736 (Jan. 31, 1980). Carbide tip depicted in Kennametal Dwg. 921-01171 (Dec. 4, 1986). Carbide tip depicted in Kennametal Dwg. 921-01173 (Mar. 2, 1987).
Patent History
Patent number: D347232
Type: Grant
Filed: Jan 21, 1993
Date of Patent: May 24, 1994
Assignee: Kennametal Inc. (Latrobe, PA)
Inventors: Ted R. Massa (Latrobe, PA), John J. Prizzi (Greensburg, PA)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Antoine D. Davis
Attorneys: John J. Prizzi, Stephen T. Belsheim
Application Number: 0/3,898