Chisel for a percussive tool

Details Chisel for a percussive tool Chisel for a percussive tool

1979-03-08

1981-07-28

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Impact or percussion type

175393, 175418, 239589, E21B 1036

Patent

active

042805724

ABSTRACT:
A percussive tool, particularly a chisel for percussive working in rock, has a body portion, and a nozzle arrangement in the body portion, which is operative for forming a high-speed flow of a high-pressure fluid, particularly liquid, and directing the same to a working region of the body portion. The nozzle arrangement may include a plurality of nozzle holes which are open into the working region. It may also include at least one nozzle hole and at least one nozzle directing the flow of fluid into the nozzle hole. The nozzle may be supported by a supporting member which has an inner passage and extends from an inner chamber of a head section of the body portion into a receiving recess of a shaft section of the latter. The supporting member may be adjustable in the direction of a longitudinal axis of the chisel.

REFERENCES:
patent: 604538 (1898-05-01), Leyner
patent: 1081721 (1913-12-01), Carr
patent: 1355793 (1920-10-01), Bernay
patent: 1697570 (1929-01-01), Mecom
patent: 1950513 (1934-03-01), Pope
patent: 2003144 (1935-05-01), Graham, Jr.
patent: 2069482 (1937-02-01), Seay
patent: 2131056 (1938-09-01), Lind
patent: 2161062 (1939-06-01), Killgore
patent: 3554306 (1971-01-01), Wilburn
patent: 3554602 (1971-01-01), Chaney
patent: 3841559 (1974-10-01), Hall et al.
patent: 4022287 (1977-05-01), Lundstrom et al.

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