Gun drill coolant bushing and method of making same
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United States of America Patent
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Feb 14, 1989
Issued Date -
N/A
app pub date -
Jan 27, 1987
filing date -
Apr 19, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
As an alternative to the drilling of relatively long holes through a mass of material to provide a passage for fluid coolant the invention makes use of a laterally open elongated slot cut into the mass of material into which easily worked material is embedded to form the fluid passage. One alternative is to lay a preformed length of tube in the slot and secure the tube in place with an appropriate bedding mass. Another is to make use of a molding expedient, namely, packing the passage with a moldable material in which an elongated core is embedded and then removing the core to form the fluid passage.
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