Drilling tool with shock absorbers

Details Drilling tool with shock absorbers Drilling tool with shock absorbers

1997-12-22

2000-08-15

Lillis, Eileen Dunn

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

1753251, 1753254, 175425, 175412, E21B 1000

Patent

active

061021423

ABSTRACT:
A drilling tool including a drilling head equipped with cutting edges and fitted with several shock-absorption elements, of which at least one part is made of an elastomer material. Each shock-absorption element having a block incorporating one portion inserted inside a receptor housing formed on the tool surface, and a portion which projects outward beyond the receptor housing.

REFERENCES:
patent: 3618683 (1971-11-01), Hughes
patent: 4244432 (1981-01-01), Rowley et al.
patent: 4253533 (1981-03-01), Baker, III
patent: 4499795 (1985-02-01), Radtke
patent: 4640375 (1987-02-01), Barr et al.
patent: 5011515 (1991-04-01), Frushour
patent: 5072812 (1991-12-01), Imaizumi
patent: 5090492 (1992-02-01), Keith
patent: 5372548 (1994-12-01), Wohlfeld
patent: 5377772 (1995-01-01), Gien
patent: 5379854 (1995-01-01), Dennis
patent: 5499688 (1996-03-01), Dennis

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