Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product
Patent
1982-08-20
1986-04-01
Bilinsky, Z. R.
Cutting by use of rotating axially moving tool
With means to apply transient, fluent medium to work or product
173DIG1, 175 6, 175107, B23B 4100, E21B 7124
Patent
active
045794847
ABSTRACT:
An underwater tapping machine having a body equipped for attachment to a fitting secured to a pipeline and a rotatable boring bar within the body, a gear case affixed to the body to activate the boring bar, a containment vessel supported by the tapping machine body having a first opening communicating with the vessel exterior and thus to the pressure of fluid in which the tapping machine is employed, the containment vessel having a second opening and a fluid barrier pressure transmitting member dividing the interior of the vessel into a first portion having the first opening therein and a second portion communicating with the second opening, the second portion having liquid lubricant therein, and conduits extending from the containment vessel second opening to the interior of the tapping machine body and gear case so that the pressure of fluid in which the tapping machine is employed is applied by way of the pressure transmitting member to the liquid lubricant and thus to the interior of the tapping machine to thereby equalize the pressure interiorially of the tapping machine with the ambient pressure of fluid in which the machine is used to prevent the penetration of ambient fluid water into the interior of the tapping machine.
REFERENCES:
patent: 3436914 (1969-04-01), Rosfelder
patent: 3614252 (1971-10-01), Rose
patent: 3907000 (1975-09-01), Carr
patent: 4019591 (1977-04-01), Fox
patent: 4260032 (1981-04-01), Fox
Bilinsky Z. R.
T. D. Williamson Inc.
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