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US 4,978,036 AGranted
Dispensing valve
AssigneeKoller Enterprises, Inc.
InventorWayne D. Burd
Life of this patent
Estimating the term…
Abstract
A dispensing mechanism for a container of liquid has a chamber formed by a flexible wall which compresses and expands in response to movement of a discharge nozzle assembly. A first fluid passage communicates between the container and the chamber and a second fluid passage communicates between the chamber and the discharge nozzle outlet. Check valves are used to control flow of liquid from the container to the chamber and the chamber to the outlet so a predetermined amount of liquid is discharged.
Claims8
A dispensing mechanism for a container of liquid, the container having an opening in one side thereof, the mechanism comprising:
- (a) a chamber formed in part by a flexible wall which is compressible and expandable;
- (b) a planar member forming a part of the chamber;
- (c) a first fluid passage for communicating between an opening in a container and the chamber through the planar member;
- (d) a discharge nozzle;
- (e) a second fluid passage communicating between the chamber and the nozzle;
- and
- (f) means for compressing the wall of the chamber;
- (g) first ball check valve means positioned in the first fluid passage and a second valve means positioned in the second fluid passage at a location remote from the chamber whereby liquid in the chamber is discharged through the nozzle when the wall of the chamber is compressed and liquid in the container is drawn into the chamber when the compression is released and the chamber expands, the first and second valve means including means for acting without obstructing the interior of the chamber, the first valve means being closed when the chamber is compressed and opening when the compression is released, permitting a predetermined amount of liquid to be drawn from the container into the chamber, via the first fluid passage, when the first valve means is open.
5 more elements
A dispensing pump for a viscous fluid comprising:
- (a) a chamber formed in part by a flexible wall;
- (b) the chamber having an upper member forming a part of the chamber;
- (c) means for defining a first fluid passage to the chamber through the upper member;
- (d) the pump having a discharge nozzle;
- (e) the discharge nozzle having means for defining a second fluid passage between the chamber and the discharge nozzle;
- (f) a first ball check valve means positioned in the first fluid passage means and second valve means positioned in the second fluid passage means, the first and second valve means including non-restricting means for communicating with the chamber through the first and second fluid passage means, and
- (g) the pump having means for discharging fluid in the chamber through the nozzle when the nozzle is pressed to collapse the chamber and having means for drawing fluid into the chamber when the nozzle is released, including the first and second valve means, the first and second valve means including means for acting without substantially obstructing the interior of the chamber, the first valve means being closed when the nozzle is pressed and opening when the nozzle is released, a predetermined amount of fluid being drawn from the container into the chamber, via the first fluid passage, when the first valve means is open.
4 more elements
A dispensing pump for a viscous fluid comprising:
- (a) a chamber formed in part by a flexible wall;
- (b) the chamber having an upper member forming a part of the chamber;
- (c) means for defining a first fluid passage to the chamber through the upper member;
- (d) the pump having a discharge nozzle;
- (e) the discharge nozzle having means for defining a second fluid passage between the chamber and the discharge nozzle;
- (f) a first segmented diaphragm valve means positioned in the first fluid passage means and second valve means positioned in the second fluid passage means, the first and second valve means including non-restricting means for communicating with the chamber through the first and second fluid passage means, the diaphragm valve means including a plurality of plates, one of said plates including means for relatively positioning the plates, and
- (g) the pump having means for discharging fluid in the chamber through the nozzle when the nozzle is pressed to collapse the chamber and having means for drawing fluid into the chamber when the nozzle is released, including the first and second valve means, the first and second valve means including means for acting without substantially obstructing the interior of the chamber.
4 more elements
Dependencies are inferred from the claim text.