Check valve with backbone enhanced petals

Patent metadata

Field	Value
Publication number	US-9518668-B2
Application number	US-201414454034-A
Country	US
Kind code	B2
Filing date	Aug 7, 2014
Priority date	Aug 7, 2014
Publication date	Dec 13, 2016
Grant date	Dec 13, 2016

Abstract

A check valve includes a base, two sidewalls extending from the base and a pin coupled between the two sidewalls. The valve also includes a flapper pivotably coupled to the pin to occupy respective open and closed positions in accordance with a pressure differential of a fluid flow across the check valve, the flapper including a plate and a backbone that is thicker than the base and the extends along an entire length of the plate.

First claim

The invention claimed is:

1. A check valve, comprising:
a body;
two sidewalls extending from the body;
a pin coupled between the two sidewalls;
a flapper pivotably coupled to the pin to occupy respective open and closed positions in accordance with a pressure differential of a fluid flow across the check valve, the flapper including a flapper body formed as a plate and a backbone that is thicker than the flapper body and extends along an entire length of the flapper body;
an arcuate outer protrusion that connects opposing ends of the backbone and extends from an upper surface of the flapper body; and
a rib extending between and connecting the arcuate outer protrusion and the backbone, the rib being perpendicular to the backbone, wherein the rib portion includes an indentation that contacts a stop pin when the check valve is in the open position.

2. The check valve of claim 1 , wherein the flapper further includes at least two hinge components that couple the flapper to the pin.

3. The check valve of claim 2 , wherein the at least two hinge components are coupled directly to the backbone.

4. The check valve of claim 3 , wherein one of the at least two hinge components includes an extension that extends beyond an end of the backbone.

5. The check valve of claim 4 , wherein the extension contacts one of the two sidewalls.

6. The check valve of claim 1 , wherein the rib has a width defined as a distance from the backbone to the arcuate outer protrusion and that includes a rib portion that has a same height as a height of the backbone, the rib portion extending for less than an entire width of the rib.

7. The check valve of claim 1 , wherein a bottom of the plate includes a recess and includes an extension defining an outer periphery of the recess.

8. The check valve of claim 7 , wherein, when the check valve is in the closed position, the extension is the only portion of the flapper body that contacts the body.

9. A check valve, comprising:
a body;
two sidewalls extending from the body;
a pin coupled between the two sidewalls; and
a flapper pivotably coupled to the pin to occupy respective open and closed positions in accordance with a pressure differential of a fluid flow across the check valve, the flapper including a flapper body formed as a plate and a backbone that is thicker than the flapper body and extends along an entire length of the flapper body,
wherein the flapper further includes at least two hinge components that couple the flapper to the pin, the at least two hinge components coupled directly to the backbone, and wherein one of the at least two hinge components includes an extension that extends beyond an end of the backbone.

10. The check valve of claim 9 , wherein the extension contacts one of the two sidewalls.

11. The check of valve of claim 9 , further including an arcuate outer protrusion that connects opposing ends of the backbone and extends from an upper surface of the flapper body.

12. The check valve of claim 11 , further including a rib extending between and connecting the arcuate outer protrusion and the backbone.

13. The check valve of claim 12 , wherein the rib is perpendicular to the backbone.

14. The check valve of claim 13 , wherein the rib has a width defined as a distance from the backbone to the arcuate outer protrusion and that includes a rib portion that has a same height as a height of the backbone, the rib portion extending for less than an entire width the rib.

15. The check valve of claim 13 , wherein the rib portion includes an indentation that contacts a stop pin when the check valve is in the open position.

16. The check valve of claim 9 , wherein a bottom of the plate includes a recess and includes an extension defining an outer periphery of the recess.

17. The check valve of claim 16 , wherein, when the check valve is in the closed position, the extension is the only portion of the flapper body that contacts the body.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Barone Michael R

Classifications

• Y10T137/7898

  Pivoted valves · CPC title

• Y10T137/7839

  Dividing and recombining in a single flow path · CPC title

• F16K15/038 Primary

  having a common hinge · CPC title