Pumps – Condition responsive control of pump drive motor
Patent
1982-04-30
1984-09-18
Garrett, Robert E.
Pumps
Condition responsive control of pump drive motor
417274, 417 63, 60594, 60534, 92153, 92 865, 92 5R, 184 29, 184 74, F04B 4910, B60T 1722, F01B 3110
Patent
active
044721110
ABSTRACT:
The present invention comprises an apparatus for producing high pressure fluid by means of a cylinder having a reciprocatingly sliding ram inside, suction and pressurization of the fluid being performed by the reciprocation of said ram. In the apparatus, an oil chamber is positioned on the intensifying side within said cylinder, and lubricating oil in said oil chamber is caused to have a pressure equivalent to that of the high pressure fluid produced. This oil pressure is transmitted to the slidable contact portions of the ram. The apparatus is capable of detecting the lack of lubricating oil, when such lack of lubricating oil occurs.
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Garrett Robert E.
Li H. Edward
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