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Vacuum demand valve

Imported: 24 Feb '17 | Published: 06 Jan '04

Mark E. Williamson, Scott R. Ariagno, Alan W. Marttila, Arnold C. Bilstad, Paul M. DiPerna, Michael R. Prisco, David W. Pennington, Atif M. Yardimci, Sidney T. Smith, Mark C. Perry, Marc Bellotti

USPTO - Utility Patents

Abstract

A vacuum demand valve for delivering a flowable material is disclosed. The valve has a housing having a proximal end, a distal end, an intermediate segment therebetween defining a passageway wherein the flowable substance can flow from the proximal end to the distal end. The housing can be a tubing. A valve member is located along the intermediate segment. The valve member has a closed condition wherein the flow of the flowable material from the proximal end to the distal end is stopped and an open condition wherein the flow of the flowable material from the proximal end to the distal end is unstopped. The valve member is biased in the closed condition and is responsive to a partial vacuum provided by the user through the passageway for placing the valve member in the open condition.

Description

Other features and advantages of the invention will be apparent from the following specification taken in conjunction with the following drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 2 is a side view of the valve member of FIG. 1 in the closed condition;

FIG. 3 is a side view of the valve member of FIG. 1 in the open condition;

FIG. 4 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 5 is a side view of the valve member of FIG. 4 in the closed condition;

FIG. 6 is a side view of alternate valve member utilizing a diaphragm in the closed condition;

FIG. 7 is a side view of the valve member of FIG. 4 in the open condition;

FIG. 8 is a perspective view of an embodiment of the invention;

FIG. 9 is a side view of the valve member of FIG. 8 in the closed condition;

FIG. 10 is a view of the valve member of FIG. 8 taken along A—A of FIG. 9;

FIG. 11 is a view of the valve member of FIG. 8 taken along B

1—B

1 of FIG. 9;

FIG. 12 is a side view of the valve member of FIG. 8 in the open condition;

FIG. 13 is a view of the valve member of FIG. 8 taken along B

2—B

2 of FIG. 12;

FIG. 14 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 15 is a side view of the valve member of FIG. 14 in the closed condition;

FIG. 16 is a side view of the valve member of FIG. 14 in the open condition;

FIG. 17 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 18 is a side view of the valve member of FIG. 17 in the closed condition;

FIG. 19 is a view of the valve member of FIG. 17 taken along A—A of FIG. 18;

FIG. 20 is a side view of the valve member of FIG. 17 in the open condition;

FIG. 21 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 22 is a side view of the valve member of FIG. 21 in the closed condition;

FIG. 23 is a side view of the valve member of FIG. 21 in the open condition;

FIG. 24 is a perspective view of an embodiment of the invention attached to a fluid container;

FIG. 25 is a side view of the valve member of FIG. 24 in the closed condition; and

FIG. 26 is a side view of the valve member of FIG. 24 in the open condition.

Claims

1. A valve comprising:

2. The valve of claim 1 wherein the first end of the passageway is obstructed by the second retainer when the diaphragm is in the first position.

3. The valve of claim 1 wherein the plunger has a head portion that engages the second retainer when the diaphragm is in the first position.

4. The valve of claim 1 wherein the diaphragm biases the plunger to the first position.

5. A valve comprising:

6. A tubing for delivering a fluid substance from a container to a user, the tubing comprising:

7. The tubing of claim 6 wherein the external force is a partial vacuum pressure provided by the user.

8. The tubing of claim 7 further comprising a support member located within the passageway of the tubing, the support member for preventing the tubing from total constriction in response to the vacuum pressure provided by the user.

9. The tubing of claim 8 wherein the support member is joined to the inner wall and between the valve member and the distal end of the tubing.

10. The tubing of claim 6 wherein the valve member includes plunger having a fluid passage therethrough, the fluid passage obstructed when the valve member is in the closed condition, the plunger slidable within the valve member and responsive to the external force supplied by the user wherein the fluid passage is unobstructed in the open condition to allow the flow of fluid substance to pass therethrough.

11. The tubing of claim 10 wherein the valve member includes a plunger housing within the passageway, the plunger located within the plunger housing and forming a substantially fluid-tight seal therewith and slidable therein in response to the external force provided by the user.

12. The tubing of claim 11 wherein the valve member includes an elastic member for biasing the plunger so that the fluid passage is obstructed against a portion of the plunger housing in the closed condition.

13. The tubing of claim 11 wherein the plunger housing includes a vent passing through the sidewall of the tubing.

14. The tubing of claim 11 wherein the fluid passage is substantially sealed against a portion of the plunger housing when the valve is in the closed condition.

15. The valve of claim 1 wherein the housing further includes a vent hole.

16. The valve of claim 1 wherein the diaphragm includes an opening, that receives the plunger.

17. A valve comprising:

18. A tubing for delivering a fluid substance from a container to a user, the tubing comprising:

19. The tubing of claim 18 further comprising a flexible diaphragm member, wherein the valve member is biased by the diaphragm in the closed condition and responsive to an external force provided by a user in the form of a partial vacuum provided by the user through the passageway for moving the valve member into the open condition.