Title: Elastomeric pumps

Abstract: This invention provides the fluid-handling device which includes a curved base member of which the surface is closed upon its self, for example a truncated cone, and an elastomeric member adapted to receive and enclose the base member. The elastomeric member defines a number of chambers at its contact with the base member, these including an inlet chamber divided by a sloping partition integral with the elastomeric member, and a outlet chamber also divided by a sloping partition intergral with the elastomeric member. The elastomeric member also includes a dome adjacent the end or truncation of the base member, and this dome defines with the base member a chamber of variable volume, which is connected to the inlet and outlet chambers by suitable passageways which result in a pumping action when the dome is depressed and then released.

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Inventors: Humphrey, Frederick Harold (Markham, CA, US)

Application Number: 536197
Filing Date: 1974-12-24
Publication_date: 1976-04-06
Assignee: Polypump Limited (Norwood, NJ)
Primary Class(es): 222/207 222/212, 417/566
Other Classes:
US Patent Ref:

2562317	Jul, 1951	Krall	222/207.
3102489	Sep, 1963	Corsette et al.	222/383.
3162334	Dec, 1964	Miller	222/207.
3486663	Dec, 1969	Humphrey	222/207.
3752366	Aug, 1973	Lawrence	222/207.

Other Refs:
Primary Examiner: Reeves, Robert B.
Assistant Examiner: Handren, Frederick R.
Attorney: Sim & McBurney