US 8,757,582 B2Granted

Valve assembly

AssigneeKnappco, LLC

InventorRandy Donald Robinson

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Abstract

A valve assembly for sealing a port of a housing includes a primary sealing member and a secondary sealing member mounted to a valve body. Valve body includes a lower body with an upper portion depending from the body having a cross sectional diameter less than the upper body, and a lower portion depending from the upper portion having a cross sectional diameter less than the upper portion. The primary member includes apertures and is slidably mounted to the upper portion, and the secondary member is mounted to the lower portion. In a closed position the secondary member seals against the primary member, and the primary member seals against the port. Downward movement of the valve body unseals the secondary member from the primary member allowing venting through the apertures, and then unseals the primary sealing member from the port allowing full venting through the housing.

Claims17

Dependent claims

A valve assembly, comprising:

(1) a housing extending between a lower first port and an upper second port;
(2) a valve body extending into the housing, comprising:
(a) an upper body having a cross sectional diameter, wherein the upper body is disposed within the housing;
(b) and a lower body, comprising:
(i) an upper portion extending downward from the upper body and having a cross sectional diameter less than the upper body;
and
(ii) a lower portion extending downward from the upper portion and having a cross sectional diameter less than the upper portion;
and
(3) a sealing assembly, comprising:
(a) a primary sealing member, comprising:
(i) a body including an upper surface and a lower surface;
(ii) a passage for slidably mounting the primary sealing member to the upper portion;
(iii) an aperture adjacent the passage, the aperture extending between the upper surface and the lower surface;
and
(iv) a seal at the upper surface for creating a sealing relationship between the primary sealing member and the housing first port;
and
(b) a secondary sealing member, comprising:
(i) a body including an upper surface and an outer edge;
(ii) a passage for mounting the secondary sealing member to the lower portion;
(iii) a groove in the upper surface disposed between the passage and outer edge;
and
(iv) a seal received within the groove for creating a sealing relationship between the secondary sealing member and the primary sealing member lower surface, wherein when the secondary sealing member and primary sealing member are in a sealing relationship the aperture of the primary sealing member falls within the region defined by the second sealing member passage and the second sealing member seal.

19 more elements

A valve assembly, comprising:

(1) a tubular housing extending between a lower first port and an upper second port;
(2) a tubular valve stem disposed within the housing, the valve stem extending between a first opening and a second opening adjacent the first port;
(3) an elongated tubular valve body, comprising:
(a) an upper body having a cross sectional diameter, wherein the upper body is disposed within the valve stem;
and
(b) and a lower body, comprising:
(i) an upper portion extending downward from the upper body and having a cross sectional diameter less than the upper body;
and
(ii) a lower portion extending downward from the upper portion and having a cross sectional diameter less than the upper portion;
and
(4) a sealing assembly, comprising:
(a) a primary sealing member, comprising:
(i) a disk-shaped body including an upper surface and a lower surface;
(ii) a centrally located passage for slidably mounting the primary sealing member to the upper portion;
(iii) an aperture adjacent the passage, the aperture extending between the upper surface and the lower surface;
and
(iv) a seal at the upper surface for creating a sealing relationship between the primary sealing member and the tubular housing first port;
and
(b) a secondary sealing member, comprising:
(i) a body including an upper surface and an outer edge;
(ii) a centrally located passage for mounting the secondary sealing member to the lower portion;
(iii) a groove in the upper surface disposed between the passage and outer edge;
and
(iv) a seal received within the groove for creating a sealing relationship between the secondary sealing member and the primary sealing member lower surface, wherein when the secondary sealing member and primary sealing member are in a sealed relationship the aperture of the primary sealing member falls within the region defined by the second sealing member passage and the second sealing member seal.

21 more elements

A valve assembly, comprising:

(1) a tubular housing extending between a lower first port and an upper second port;
(2) a tubular valve stem disposed within the housing, the valve stem extending between a first opening and a second opening adjacent the first port;
(3) an elongated valve body, comprising:
(a) a tubular upper body having a cross sectional diameter, wherein the upper body is disposed within the valve stem;
and
(b) and a lower body, comprising:
(i) a tubular upper portion extending downward from the upper body and having a cross sectional diameter less than the upper body;
(ii) a first shoulder formed by the transition between the upper body and the upper portion;
(iii) a tubular lower portion extending downward from the upper portion and having a cross sectional diameter less than the upper portion;
and
(iv) a second shoulder formed by the transition between the upper portion and the lower portion;
and
(4) a sealing assembly, comprising:
(a) a primary sealing member, comprising:
(i) a disk-shaped body including an upper surface and a lower surface;
(ii) a centrally located passage for slidably mounting the primary sealing member to the upper portion;
(iii) an aperture adjacent the passage, the aperture extending between the upper surface and the lower surface;
(iv) a flange at the upper surface including an annular outward extending lip forming an outward annular cavity;
and
(v) a seal extending from the annular cavity creating a sealing relationship between the primary sealing member and the tubular housing first port;
and
(b) a secondary sealing member, comprising:
(i) a body including an upper surface;
(ii) a centrally located passage for mounting the secondary sealing member to the lower portion;
and
(iii) a seal at the upper surface for creating a sealing relationship between the secondary sealing member and the primary sealing member lower surface, wherein when the secondary sealing member and primary sealing member are in a sealed relationship the aperture of the primary sealing member falls within the region defined by the second sealing member passage and the second sealing member seal.

23 more elements

Dependencies are inferred from the claim text.