Hole shaping cutter

- Tri Tech, U.S.A., Inc.

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Description

FIG. 1 is a top perspective view of a hole shaping cutter showing our new design;

FIG. 2 is a rear elevational view thereof on a reduced scale;

FIG. 3 is a front elevational view on a reduced scale;

FIG. 4 is a left side elevational view on a reduced scale;

FIG. 5 is a right side elevational view on a reduced scale; and

FIG. 6 is a bottom plan view on a reduced scale.

Referenced Cited
U.S. Patent Documents
D25955 August 1896 Larkin
D252131 June 19, 1979 Einhorn et al.
D297804 September 27, 1988 Matthews
1011157 December 1911 Chytraus
2557191 June 1951 King
2678491 May 1954 Thomas
3548690 December 1970 Horrocks
4509886 April 9, 1985 Lindsay
4594029 June 10, 1986 Michael
Patent History
Patent number: D317396
Type: Grant
Filed: Jun 29, 1988
Date of Patent: Jun 11, 1991
Assignee: Tri Tech, U.S.A., Inc. (Williston, VT)
Inventors: George F. Bacigalupo (Georgia, VT), Joseph G. Bacigalupo (Georgia, VT), Blease M. Matthews (Georgia, VT)
Primary Examiner: Bruce W. Dunkins
Assistant Examiner: M. Hannon
Attorney: Thomas N. Neiman
Application Number: 7/214,094
Classifications
Current U.S. Class: D 8/98