Device for supplying a plurality of service points, such as...

Lubrication – Systems – Pump or pump systems mounting means

Reexamination Certificate

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C184S006100, C184S007400

Reexamination Certificate

active

10487215

ABSTRACT:
An apparatus for supplying a viscous material to locations, comprises:a pump;a supply line in fluid communication with the pump;a first main line having a first compression chamber;a second main line having a second compression chamber;a 3/2-way valve for placing the supply line in fluid communication with either the first main line or the second main line;a two-line distributor having a control piston; anda controller for controlling the pump and the 3/2-way valve, such that(i) at a start of a cycle the pump operates to deliver the viscous material, with the 3/2-way valve positioned so as to place the supply line in fluid communication with the first main line, through the supply line and into the first main line, and then(ii) through pressure build-up in the first main line, resulting from the viscous material flowing through the supply line into the first main line, the two-line distributor operates to transport the viscous material, by movement of the control piston, into the second compression chamber and to a plurality of the locations.

REFERENCES:
patent: 5285871 (1994-02-01), Sievenpiper
patent: 6199661 (2001-03-01), Kumar
patent: 2002/0046905 (2002-04-01), Hulkkonen et al.
patent: 2002/0053332 (2002-05-01), Chamberlin et al.
patent: 2003/0159889 (2003-08-01), Johnson et al.
patent: 2006/0054404 (2006-03-01), El-Ibiary
patent: 2 041 227 (1971-01-01), None
patent: 2 613 032 (1988-09-01), None
patent: 1 570 009 (1980-06-01), None
Patent Abstracts of Japan, entitled “Concentrated Lubricator”, vol. 012, No. 404, (M-757), Oct. 26, 1988 & JP 63 145894 (Kowa KK), Jun. 17, 1988.

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