Tool driving or impacting – Work cleansing – Cleansing fluid passage through hammer head
Patent
1986-07-21
1988-04-12
Kazenske, E. R.
Tool driving or impacting
Work cleansing
Cleansing fluid passage through hammer head
175422R, E21B 1038
Patent
active
047368055
ABSTRACT:
A tool for a hydraulic breaker having a pressurized fluid system which coacts with the impact tool to break objects such as rocks or aggregate sections. The impact tool has a bore extending through a work engaging end. A conduit is routed into the bore and includes a nozzle at its terminal end adjacent the work engaging end of the tool through which high pressure water is directed at the object to be broken. The tubing extends through the sidewall of the tool and into the bore through a radially extending slot. The tubing is mounted on the housing of the hydraulic hammer by means of an elastomeric vibration-dampening mounting block. The tubing is connected by high pressure hose to a valve and pump capable of developing fluid pressure in the range of about 20,000 psi. The slot is elongated to permit indexing of the tool relative to the hammer. The tool is retained in the hammer by means of a tool retainer or socket. A method of breaking an object is also disclosed using the above apparatus wherein the shock imparted to the object to be broken and pressurized fluid stream coact to propagate fissures formed in the object as a result of the shocks and cause the object to break.
REFERENCES:
patent: 888497 (1908-05-01), Hellman et al.
patent: 904692 (1908-11-01), Greve et al.
patent: 1868684 (1932-07-01), Bayles
patent: 2051053 (1936-08-01), Morris
patent: 4049318 (1977-09-01), Fruin
patent: 4534427 (1985-08-01), Wang et al.
patent: 4610321 (1986-09-01), Whaling
Brochure, "The Teledyne Roxon Hydraulic Breaker System" (Dec. 1982) by Teledyne Canada Mining Products.
DeSantis Gerard J.
Shook Forrest A.
Kazenske E. R.
NLB Corp.
Phan Hien H.
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