Adjustable hole cutter for use with interchangeable arbors

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Description

FIG. 1 is a bottom perspective view of an adjustable hole cutter for use with interchangeable arbors showing my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a second embodiment of my design wherein the only difference resides in the appearance of the shank.

Referenced Cited
U.S. Patent Documents
860020 July 1907 Dearholt
1354848 August 1920 Schilling et al.
1537376 May 1925 Prosser
2263637 November 1941 Maupin
2401979 June 1946 Smith
Patent History
Patent number: D279477
Type: Grant
Filed: Oct 19, 1981
Date of Patent: Jul 2, 1985
Inventor: Myron B. Mittleman (New York, NY)
Primary Examiner: B. J. Bullock
Assistant Examiner: Suzanne N. Gitlin
Attorney: Howard C. Miskin
Application Number: 6/312,751
Classifications
Current U.S. Class: Cutting Tool, E.g., Drill Bit, Etc. (D15/139)