Spray nozzle for mining
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United States of America Patent
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Jan 3, 1995
Grant Date -
N/A
app pub date -
Sep 14, 1993
filing date -
Sep 29, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A water spray nozzle (1) for location in a receiving bore (2) of a pick box (3) of a rotary cutting head (4) of a mining machine, comprising an elongate and generally cylindrical body member (5) having at one end an entry nose (6) and at the other end an enlarged extraction head (7), in use, intended to remain outside the receiving bore (2). A radial, water inlet orifice (8) intermediate the ends of the body member (5) leading to a water receiving chamber (25). A water sealing ring (9) located in a retaining groove (10) in the body member (5) between the water inlet orifice (8) and the nose (6) . A water discharge orifice (11) is in communication with the chamber (25). A reduced diameter formation (12) on the body member (5) has a resilient, nozzle-retaining ring (13) of material and/or dimensions such that it is compressible and/or deformable, into a nozzle retaining mode, without additional retaining means. The invention also includes a combination of nozzle (1) and pick box (3) , and also a mineral cutting head (4) provided with such pick boxes.
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