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US 5,287,937 AGranted
Drill bits and the blades therefor
AssigneeThe Sollami Company
InventorsPhillip A. Sollami, Jimmie L. Sollami
Life of this patent
Estimating the term…
Abstract
A drill bit is provided which has a novel blade having an elongate longitudinal protrusion positioned axially along the centerline of one side of the blade. The body is adapted to retain the blade in a transverse slot on one end of the body. The slot is provided with a centrally located longitudinal recess along one of the sides of the slot which is adapted to receive the longitudinal protrusion of the blade when the blade is positioned in the slot.
Claims11
A drill bit comprising in combination
- an elongate body member having a transverse slot at one end thereof,
- a blade member having a body with cutting edges at one end thereof and a mounting portion at the opposite end thereof which is complementary in cross-section to said transverse slot,
- said mounting portion being disposed in said transverse slot in said body member,
- said blade member having a longitudinally extending protrusion disposed on one side of said blade member, said protrusion being received in a recess in one side of said slot, and
- said protrusion extending to said cutting edge of said blade member.
2 more elements
A drill bit comprising in combination
- an elongate body member having a transverse slot at one end thereof,
- a blade member having a body with cutting edges converging to a centrally located apex at one end thereof and a mounting portion at the opposite end thereof which is complementary in cross-section to said transverse slot,
- said mounting portion being disposed in said transverse slot in said body member,
- said blade member having a longitudinally extending protrusion disposed on each side thereof, said protrusions being received in complementary shaped recesses in each said of said slot,
- said protrusions extending to said apex of said cutting edges,
- a longitudinal bore extending into the other of said ends of said body, and
- a port in said body communicating with said bore.
4 more elements
Dependencies are inferred from the claim text.