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US 7,677,416 B2Granted
In-line manually operated liquid dispenser with simplified construction
AssigneeMeadWestvaco Calmar, Inc.
InventorsDonald D. Foster, Jeffrey P. Stark
Life of this patent
Estimating the term…
Abstract
A hand operated liquid dispenser has a simplified, in-line construction that reduces the number of component parts of the dispenser and thereby reduces the dispenser's manufacturing costs. The in-line construction of the liquid dispenser coaxially aligns a liquid discharge orifice, a liquid discharge passage, and a pump chamber of the dispenser. The construction provides a compact liquid dispenser that can be easily held in one hand by a user and manipulated by the fingers of the user's hand to pump liquid from a bottle attached to the liquid dispenser and dispense the liquid in a variety of different discharge patterns.
Claims19
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having an interior volume containing the pump chamber cylindrical wall, the dispenser housing having a top wall and a pair of side walls that surround the pump chamber cylindrical wall with the entire pump chamber cylindrical wall being spaced inwardly and separated from each of the dispenser housing top wall and side walls;
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a liquid discharge passage that communicates with the pump chamber interior volume;
- the pump plunger having a top wall and a pair of side walls that surround the liquid discharge passage, the pump plunger top wall and side walls each telescoping with the respective dispenser housing top wall and side walls in response to reciprocating movement of the pump plunger relative to the pump chamber.
1 more element
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having an interior volume containing the pump chamber cylindrical wall, the dispenser housing having a top wall and a pair of side walls that surround the pump chamber cylindrical wall with the entire pump chamber cylindrical wall being spaced inwardly and separated from each of the dispenser housing top wall and side walls;
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a liquid discharge passage that communicates with the pump chamber interior volume;
- the pump plunger having a center tube with the liquid discharge passage extending through the center tube;
- and,
- the pump plunger having a top wall and a pair of side walls that surround the center tube with the entire center tube being spaced inwardly and separated from each of the pump plunger top wall and side walls.
3 more elements
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having an interior volume containing the pump chamber cylindrical wall, the dispenser housing having a top wall and a pair of side walls that surround the pump chamber cylindrical wall with the entire pump chamber cylindrical wall being spaced inwardly and separated from each of the dispenser housing top wall and side walls;
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a liquid discharge passage that communicates with the pump chamber interior volume;
- the pump plunger having a center tube with the liquid discharge passage extending through the center tube;
- a flexible, resilient bulb connecting the center tube to the pump chamber cylindrical wail and enclosing the interior volume of the pump chamber;
- a tubular input valve integrally formed with the bulb;
- and,
- a tubular output valve integrally formed with the bulb.
5 more elements
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having walls surrounding an interior volume containing the pump chamber;
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a center tube with a liquid discharge passage extending through the center tube and communicating with the interior volume of the pump chamber, and the pump plunger having a top wall and a pair of side walls that surround the center tube with the entire center tube being spaced inwardly and separated from each of the pump plunger top wall and side walls.
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having walls surrounding an interior volume containing the pump chamber,
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a liquid discharge passage that communicates with the pump chamber interior volume;
- a flexible, resilient bulb connecting the pump plunger to the pump chamber cylindrical wall and enclosing the pump chamber interior volume, the bulb having an integral tubular output valve and an integral tubular input valve;
- the pump chamber cylindrical wall having an input port;
- and,
- the bulb tubular input valve overlaying the input port.
4 more elements
A manually operated liquid dispenser comprising:
- a pump chamber having an interior volume and a cylindrical wall surrounding the interior volume, the pump chamber cylindrical wall having a center axis;
- a dispenser housing having walls surrounding an interior volume containing the pump chamber,
- a pump plunger mounted to the dispenser housing for axially reciprocating movement of the pump plunger relative to the pump chamber, the pump plunger having a liquid discharge passage that communicates with the pump chamber interior volume;
- a flexible, resilient bulb connecting the pump plunger to the pump chamber cylindrical wall and enclosing the pump chamber interior volume, the bulb having an integral tubular output valve and an integral tubular input valve;
- the dispenser housing having a top wall and a pair of side walls that surround the pump chamber and the bulb;
- and,
- the pump plunger having a top wall and a pair of side walls that surround the bulb.
4 more elements
Dependencies are inferred from the claim text.