Compact fluid pump
AssigneeJoseph S. Kanfer
InventorsJeffrey T. Maddox, Rexford R. Mast, Robert H. Yeager
Life of this patent
Estimating the term…
Abstract
A pump for dispensing fluid from a dispenser includes a base in fluid communication with a source of fluid carried by the dispenser and with the atmosphere. The pump includes a base attachable to the source of fluid, a flexible transparent dome attachable to the base in overlying relationship therewith and in fluid-tight relationship, and a retainer attachable to the base in partial overlying relationship with the dome to retain the dome on the base. The pump also includes valves for selectively opening and closing the pump to fluid communication with the source of fluid and the ambient atmosphere.
Claims22
A pump for use with a source of fluid, comprising:
- a) a pump base;
- b) a first connector attached to and projecting from said base for attachment to the source of fluid;
- c) said base having through outlet means in fluid communication with the ambient atmosphere;
- d) said first connector being hollow for fluid communication between the source of fluid and said pump base;
- e) said connector and said through outlet means having their axes disposed in planes substantially normal to each other;
- f) first valve means carried by said pump base for selectively closing off and opening said first connector to fluid communication and
- g) a flexible pressure member
- 1) attached to said base in overlying, fluid-tight relationship therewith and
- 2) forming a chamber with said base whereby, upon collapse of said pressure member, fluid within said chamber is expelled therefrom through said through outlet and, upon expansion of said pressure member, fluid is drawn into said chamber from the source of fluid.
A pump for use with a source of fluid, comprising:
- a) a pump base;
- b) a transparent flexible pressure member attached to said base in overlying relationship therewith to form, together with said base, a fluid-tight chamber;
- c) a first connector
- 1) projecting from said pump base, and
- 2) adapted to be attached to the source of fluid in fluid communication therewith and with said chamber;
- d) a second connector projecting from said pump base in fluid communication with said chamber and the ambient atmosphere;
- and
- e) first and second valve means associated with said first and second connectors, respectively
- 1) whereby said first and second connectors can be selectively opened and closed in response to collapse and expansion of said flexible pressure member.
A pump for use with a source of fluid, comprising:
- a) a base for attachment to the source of fluid;
- b) a flexible dome receivable on said base to form a fluid-receiving chamber between said base and said dome;
- c) a retaining ring releasably engaging said base and said flexible dome to form a fluid-tight seal therebetween;
- and
- d) said base having a through bore for fluid communication with the ambient atmosphere.
A fluid dispenser, source of fluid and pump combination, comprising:
- a) a dispenser housing including
- 1) a back plate, and
- 2) a cover hingedly connected to said back plate for movement between an open and a closed position;
- b) said back plate and said cover creating a chamber for receipt of the source of fluid when said cover is in said closed position;
- c) a pump including
- 1) a pump base;
- 2) means for attaching said pump base to the source of fluid, and
- 3) inlet means in fluid communication with the source of fluid, and
- 4) outlet means in fluid communication with the ambient atmosphere;
- d) said pump including a transparent flexible dome;
- and
- e) said transparent flexible dome being visible and accessible through said cover.
A pump for use with a source of fluid, comprising:
- a) a base having an inlet opening for connection to the source of fluid and an outlet opening for communication with the ambient atmosphere;
- b) a flexible transparent dome receivable on the base to form a fluid-tight chamber therewith;
- and
- c) a retaining member attachable to the base in partial overlying relationship with said flexible transparent dome.
A pump for use with a source of fluid, comprising:
- a) a base for attachment to the source of fluid;
- b) a flexible dome receivable on said base to form a fluid receiving chamber between said base and said dome;
- c) a retainer disposed on said dome for engagement with said base to form a fluid-tight seal between said base and said dome;
- and
- d) said base having a through bore for fluid communication with the ambient atmosphere.
Dependencies are inferred from the claim text.