Retainer and wear sleeve for rotating mining bits

Patent · Tue Nov 27 04:00:00 EST 1984

OSTI ID:6036317

Emmerich, K C

A mining bit to be mounted for rotation in a bore of a support block or on a drill steel having a retention configuration opposite the working end. A bit shank is formed with an abutment flange at the insertion end and a recess adjacent said flange to receive flexed resilient fingers of a resilient retention ring during insertion of said ring in said bore. A fulcrum land supports an unsplit end of said ring. The resilient fingers carry an annular bulge projection which engages an annular recess in a support bore. The ring can extend the length of the retention shank to serve as a wear sleeve. With a drill steel, the retention ring is mounted on an extending insert to cooperate with a female recess in a hollow bit.

• Assignee: Fansteel Inc.
• Patent Number(s): US 4484783
• OSTI ID: 6036317
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
COAL MINING
DESIGN
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DRILLS
EQUIPMENT
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
MINING
ROCK DRILLING
ROTARY DRILLING
ROTARY DRILLS
SLEEVES
SUPPORTS
WEAR RESISTANCE