Hydraulic ram pumps

Details Hydraulic ram pumps Hydraulic ram pumps

1993-04-26

1994-05-10

Bertsch, Richard A.

Pumps

Intensifier

Ram type

F04F 702

Patent

active

053103220

ABSTRACT:
Hydraulic ram pump apparatus is provided, of the type including a body member (7) having a water flow passage therethrough, a waste gate (1) disposed in the passage, a delivery outlet (23) and a one-way delivery valve (10, 11) disposed in the outlet. The improvement therein lies in the waste gate (1) being pivotally mounted to the body member (7) and configured such that, in its fully open position (1a), the waste gate (1) does not significantly restrict the flow of water through said passage, in the interest of efficiency at low drive heads. The waste gate (1) is spring biased towards its open position to provide opening assistance to the waste gate (1) at low drive heads. The spring bias is such that it is at its greatest when the waste gate (1) is fully closed and is substantially zero when the waste gate is fully open.

REFERENCES:
patent: 868194 (1907-10-01), Lester
patent: 1214192 (1917-01-01), Lester
patent: 1249462 (1917-12-01), Nilson
patent: 1530182 (1975-03-01), Sordao
patent: 1725637 (1929-08-01), Melmick
patent: 4054399 (1977-10-01), Maurer
patent: 4073604 (1978-02-01), Chen
patent: 4396034 (1983-08-01), Cherniak
patent: 4911613 (1990-03-01), Cox

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