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US 5,560,545 AGranted
Dual in-line trigger sprayer
AssigneeCalmar Inc.
InventorsR. Pat Grogan, James R. Gillingham, Tanny Li
Life of this patent
Estimating the term…
Abstract
A fluid dispenser for simultaneously dispensing disparate fluids separately stored in separate fluid compartments of a container includes a single pump cylinder defining together with a dual seal piston a pair of in-line pump chambers for separately and simultaneously pumping the disparate fluids along separate discharge paths.
Claims21
A manually actuated fluid pump dispenser for simultaneously dispensing first and second fluids separately stored in respective first and second fluid compartments, comprising:
- a pump body having pump means in fluid communication with said fluid compartments for simultaneously suctioning fluid therefrom and for discharging the suctioned fluid to a common location;
- said pump means comprising a single pump cylinder and a single pump piston of unitary molded plastic construction reciprocable as a unit within said cylinder;
- said piston having a pair of axially spaced piston seals defining with said cylinder a pair of axially aligned variable volume pump chambers;
- and
- actuation means on said pump body for actuating said piston against the force of a single piston return spring.
2 more elements
A trigger operated fluid dispenser, comprising:
- a pump body for mounting with a closure cap at the upper end of a container of fluid;
- said pump body having a neck portion including at least one valve controlled fluid inlet passage, said neck portion being engaged by said closure cap;
- said pump body having pump means in fluid communication with said inlet passage;
- a trigger lever actuator pivotally mounted to said pump body for actuating said pump means;
- said neck portion having at least one vent opening for communication with the interior of the container;
- a vent control ring surrounding said neck portion and being manually rotatable about a central axis thereof without movement along said axis;
- said ring having a wall overlying said vent opening for blocking said opening in a non-use condition of the dispenser;
- said wall of said ring having at least one aperture in alignment with said vent opening for unblocking said opening in a given rotative position of said ring;
- and
- means on said ring for locking said ring in said non-use position.
7 more elements
Dependencies are inferred from the claim text.