Title: Radially adjustable rotary cutting tool

Abstract: A radially adjustable rotary cutting tool such as a rotary reamer or the like. The tool head has a generally cylindrical body with a shank at one end and a radially slotted cutting head at the other end. The cutting head has a central axially extending threaded bore adapted to receive a threaded expansion element that may be used to radially expand or enlarge the cutting head when turned into the bore. The cutting head has an inner core portion formed of a low to medium alloy carbon steel and an annular outer portion formed of a tool steel metallurgically bonded to the core portion to provide a unitary composite structure. The annular outer portion has a plurality of circumferentially spaced longitudinal flutes formed therein to define integral longitudinally extending radially adjustable cutting surfaces.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Skingle, Thomas Jerome (Parma, OH, US)

Application Number: 564065
Filing Date: 1975-04-01
Publication_date: 1977-09-27
Assignee: Acme-Cleveland Corporation (Cleveland, OH)
Primary Class(es): 408/144 407/32, 407/53, 408/161
Other Classes:
US Patent Ref:

764145	Jul, 1904	McKenna	76/101.
945566	Jan, 1910	Matthews	408/144.
2858718	Nov, 1958	Kohler	408/144.
3017790	Jan, 1962	Werle	408/144.

Other Refs:
Primary Examiner: Simpson, Othell M.
Assistant Examiner: Bilinsky, Z. R.
Attorney: Bosworth, Sessions & McCoy