Title: Grooved earthworking bit and method of enhancing the life thereof

Abstract: The specification discloses an insert tipped tool bit having grooves formed on the longitudinal periphery of the bit in the parent material supporting the insert and a method of reducing erosion of the insert supporting parent material by forming grooves on the longitudinal periphery of the tool bit and sizing and spacing the grooves so that earth fines can pack in the grooves and create a boundary layer of earth fines around the parent material.

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

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

Inventors: Montgomery, Jr., Robert H. (Fishertown, PA, US)
Oaks, Seibert S. (Everett, PA, US)

Application Number: 915908
Filing Date: 1978-06-16
Publication_date: 1980-03-25
Assignee: Kennametal Inc. (Latrobe, PA)
Primary Class(es): 299/105 175/377, 299/110
Other Classes:
US Patent Ref:

1143271	Jun, 1915	Hughs	175/377.
2177332	Oct, 1937	Reed	175/377.
2528300	Oct, 1950	Degner	175/377.
2738965	Mar, 1956	McCarthy	299/87.
3361481	Jan, 1968	Maddock	299/86.
3652130	Mar, 1972	Elde	299/86.
3915246	Oct, 1975	Sheshtawy	175/317.

Other Refs:
Primary Examiner: Pate, III, William F.
Assistant Examiner:
Attorney: Burns; Lawrence R.