Pumps – With condition responsive pumped fluid control – Having timer or delay means for fluid controller
Patent
1981-04-15
1983-11-22
Gluck, Richard E.
Pumps
With condition responsive pumped fluid control
Having timer or delay means for fluid controller
417299, 417304, F04B 4904, F04B 4908
Patent
active
044165927
ABSTRACT:
This liquid flow control apparatus is a delayed closure valve mechanism intended for use in an unloading bypass between the outlet and the inlet of a pump for supplying fuel to an oil burner. The valve mechanism includes a conduit having a large diameter section between two small diameter sections. A ball valve having a diameter smaller than the large diameter section and larger than the two small diameter sections is captured within the large diameter section. The large diameter section extends upwardly, so that the ball is biased by gravity to its inlet end. When the pump starts, the ball is moved by the discharge pressure of the pump until it engages the upper end of the large diameter section, whereupon the unloading bypass is closed and the discharge pressure of the pump is effective to open a cut-off valve leading to the nozzle of the oil burner. The length of the large diameter section determines the time delay between the starting of the pump and the delivery of oil to the nozzle of the burner. In a modification, two parallel paths are provided for the ball valve, a first long path through which the ball moves to establish the time delay, and a second shorter path through which the ball moves quickly to return to its inactive position.
REFERENCES:
patent: 2293071 (1942-08-01), Morgensen
patent: 2627868 (1953-02-01), Runnels
patent: 3948147 (1976-04-01), Sauer
patent: 4062384 (1977-12-01), Frahm
patent: 4269572 (1981-05-01), Nozawa
patent: 4350476 (1982-09-01), Eller
Gluck Richard E.
Obee Jane E.
Sid Harvey, Inc.
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