Specially reinforced flexible tube pumping chamber

Details Specially reinforced flexible tube pumping chamber Specially reinforced flexible tube pumping chamber

1976-01-29

1978-02-28

Croyle, Carlton R.

Pumps

Expansible chamber type

Inlet and discharge distributors at opposite ends of tubular...

417540, 92 94, F04B 4308, F04B 4506, F04B 1100

Patent

active

040764672

ABSTRACT:
A pump comprises a tubular resilient pump element alternately extended and relaxed for longitudinal deformation and reinforced by means of filaments arranged in helices, preferably with different helices of opposite hands present, whose pitch angle is other than arccot .sqroot.2 so longitudinal deformation will result in volumetric changes. Inlet and outlet valves ensure unidirectional flow through the pump element.
To smooth out flow a similarly constructed accumulator element, whose reinforcement pitch angle is chosen with a value such that the pump and accumulator pitch angles are on opposite sides of arccot .sqroot.2, is arranged to undergo simultaneous and similarly directed longitudinal deformation and to have a volumetric change of opposite sign, and preferably half the value, with regard to that of the pump element whereby during the inlet stroke of the pump element the accumulator element, which communicates with the discharge flow path from the pump element, will advance a proportion, preferably half, of the previous discharge stroke of the pump element.

REFERENCES:
patent: 1546973 (1925-07-01), Ellis
patent: 1722377 (1929-07-01), Kaplan
patent: 2553542 (1951-05-01), Bodine
patent: 2810351 (1957-10-01), Bower
patent: 3253549 (1966-05-01), Vincent et al.
patent: 3317141 (1967-05-01), Mann
patent: 3409184 (1968-11-01), Stengle
patent: 3481254 (1969-12-01), Wetherbee
patent: 3839983 (1974-10-01), McAusland

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