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PRISM PRODUCTION PRODUCTS CORP
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Individual
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Priority to CA 2035539priorityCriticalpatent/CA2035539C/en
Publication of CA2035539A1publicationCriticalpatent/CA2035539A1/en
Application grantedgrantedCritical
Publication of CA2035539CpublicationCriticalpatent/CA2035539C/en
A vapour transfer pump for a storage tank includes a bladder and a continuously reciprocating plate disposed about the bladder. Vapour from the storage tank enters the bladder through a one way check valve set at a low pressure, and is forced out, by the continuously reciprocating plate, through a second one way check valve set at a higher pressure.
CA 20355391991-02-011991-02-01Vapour transfer pump
Expired - Fee RelatedCA2035539C
(en)