Fluid actuated impact tool

Details Fluid actuated impact tool Fluid actuated impact tool

1976-02-19

1978-04-18

Staab, Lawrence J.

Tool driving or impacting

Drive controlled by relative axial movement of tool

Drive motor controlled

91234, 173 73, 173137, H01B 1754

Patent

active

040846466

ABSTRACT:
A fluid actuated impact tool is disclosed of the type commonly known as a down-the-hole drill for drilling of rock. The tool is provided with a reversible casing which serves the dual functions of a casing and cylinder. A partial cylinder sleeve is utilized in conjunction with exhaust rod porting to provide a drill which is simple in construction, has a high energy level of output, and eliminates the need for expensive cross porting or axial porting in the parts most subject to wear; that is, the impact piston and the casing. All of the porting in the casing is accomplished by means of circumferential grooves which are readily machined.

REFERENCES:
patent: 537646 (1895-04-01), Rinsche
patent: 692388 (1902-02-01), Vaughan
patent: 1128416 (1915-02-01), Crump
patent: 1211049 (1917-01-01), Bayles
patent: 1849208 (1932-03-01), Slatcher
patent: 2947519 (1960-08-01), Feucht
patent: 3136375 (1964-06-01), Lear et al.
patent: 3241239 (1966-03-01), Ellis
patent: 3410353 (1968-11-01), Martini
patent: 3606930 (1971-09-01), Curington
patent: 3804181 (1974-04-01), Curington et al.

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