Robert J Strange

US Patent:

45964998, Jun 24, 1986

Filed:

Sep 26, 1983

Appl. No.:

6/535414

Inventors:

Michael D. Fangmann - Bluegrass IA
Robert E. Strange - Grosse Pointe Woods MI
William C. McKay - Seabrook TX

Assignee:

Jancy Engineering Company - Davenport IA

International Classification:

B23B 5104

US Classification:

408206

Abstract:

An annular hole cutter having a shank and an integral cylindrical body provided with a plurality of axially extended cutting teeth which each has an inner cutting edge and an outer cutting edge. The inner and outer cutting edges are equal in radial width and their inner ends meet in a common leading cutter point. The outer and inner cutting edges on each cutting teeth share a substantially mutual radial face.

US Patent:

43858538, May 31, 1983

Filed:

Feb 9, 1981

Appl. No.:

6/232865

Inventors:

Robert E. Strange - Grosse Pointe Woods MI
Charles F. Morris - Flint MI

Assignee:

Jancy Engineering Co. - Davenport IA

International Classification:

B23B 5104

US Classification:

408 68

Abstract:

An arbor for a rotary cutting tool which includes an elongated cylindrical shank that has an axial bore formed therethrough. The upper end of the shank is adapted to be attached to the drive spindle of an electric motor. The arbor shaft is slidably mounted in a carrier sleeve which is rotatable with the arbor shank which is retained against axial movement by a mounting means. An annular cutter is attached to the lower end of the arbor shank and a pilot ejector member is slidably mounted therein. The pilot ejector member is retained in the normal at rest position by a spring which has its upper end mounted in a bore in a piston that is attached to the carrier sleeve. The lower end of the spring engages a plunger member which maintains the pilot ejector member in its initial and other operative positions.