Variable delivery pump

Details Variable delivery pump Variable delivery pump

1992-04-15

1993-07-06

Bertsch, Richard A.

Pumps

With condition responsive pumped fluid control

Plural separate sensing means for a single fluid controller

417440, 137115, 137508, F04B 4900, F04B 2300, G05D 1100, F16K 3136

Patent

active

052248399

ABSTRACT:
Variability of the output of a pump is achieved in a power efficient manner by forcing fluid through a check valve while intermittently shunting the pump's output side to is input side. A diverter valve is employed for this purpose wherein a perforated valve cylinder is rotated within a perforated sleeve. By controlling the axial position of the valve cylinder, the amount of overlap of the two component's perforations is variable and thereby serves to control the delivered output.

REFERENCES:
patent: 2149969 (1939-03-01), Lattner
patent: 2159720 (1939-05-01), Wahlmark
patent: 2309196 (1943-01-01), Jirsa
patent: 2333885 (1943-11-01), Poulter
patent: 3476055 (1969-11-01), Crowther
patent: 4022551 (1977-05-01), Hirosawa
patent: 4455131 (1984-06-01), Werner-Larsen
patent: 4498849 (1985-02-01), Schibbye et al.
patent: 4953582 (1990-09-01), Kennedy
patent: 5074760 (1991-12-01), Hirooka et al.

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