Device for working at a hard material
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United States of America Patent
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-
Aug 28, 1990
Grant Date -
N/A
app pub date -
Jul 26, 1989
filing date -
Sep 27, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for working at hard material. The device comprises a container (4) with a sieve (6) where abrasive is sieved under a liquid surface (7). Liquid is supplied to the suction conduit (13) of a low pressure pump (8) for creation of a slurry which is pumped to a pressure vessel (10). This pressure vessel is then pressurized for the feeding of abrasive to a high pressure conduit (2) where the abrasive is mixed with high pressure liquid which is supplied to a nozzle (3) for the creation of a jet stream.
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