Polymeric casing for fluid machines and pumps

Rotary kinetic fluid motors or pumps – Bearing – seal – or liner between runner portion and static part – Means to seal radial flow pump runner inlet from outlet

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415200, F01D 1100, F01D 2500

Patent

active

050469223

ABSTRACT:
This invention is directed to a fluid pump containing a structural member, such as casing, which the fluid contacts as it enters the pump, and to a structural member having sufficient mechanical strength and flexibility for use in a fluid pump, such as a casing, which is made of a ring-opened polymer of a norbornene-type monomer containing an effective amount of an elastomer, the structural member has heat distortion temperature of over 120.degree. C., elongation at break of 15 to 80%, and flexural modulus of elasticity of 170 kg/mm.sup.2 or above.

REFERENCES:
patent: 2652191 (1953-09-01), Buchi
patent: 2764099 (1956-09-01), Wernert
patent: 3304875 (1967-02-01), Copeland
patent: 3664760 (1972-05-01), Reiner
patent: 3876327 (1975-04-01), Lobanoff
patent: 4680006 (1987-07-01), Fisher
patent: 4952348 (1990-08-01), Ishimaru et al.

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