US 9,291,274 B1Granted

Valve body and seal assembly

AssigneeNovatech Holdings Corp.

InventorGeorge H. Blume

Life of this patent

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Abstract

A valve body and seal assembly comprises at least one seal and a valve body that may include a frusto-conical valve body impact area (also referred to as a valve seat contact portion) for sealing against a valve seat. In one embodiment, the at least one seal may comprise a first and second seal sections that comprise first and second elastomers, respectively, and an intra-seal interface where the first seal section may contact the second seal section. The first seal section may comprise a first frusto-conical seal portion, and the second seal section may comprise a second frusto-conical seal portion, each for sealing against the valve seat. A method for making a valve body and seal assembly is also provided. First and second elastomers may be crosslinked. The intra-seal interface may be planar or non-planar (i.e., may comprise, e.g., a cylindrical portion and/or a frusto-conical portion).

Claims18

Dependent claims

A valve body having a longitudinal axis of symmetry, the valve body comprising:

a peripheral seal retention groove positioned around the valve body and spaced apart from the longitudinal axis of symmetry, the seal retention groove defining a seal receiving portion of the valve body that is operable to receive at least one elastomeric seal, the peripheral seal retention groove including:
a first wall portion extending peripherally around the valve body and having at least one serration extending peripherally around the valve body,
a second wall portion at least partially facing the first wall portion and extending peripherally around the valve body and having at least one serration extending peripherally around the valve body, and
a curvilinear portion positioned between the first wall portion and the second wall portion to form a closed portion of the peripheral seal retention groove, the closed portion positioned opposite an open portion of the peripheral seal retention groove defined as the area between an outer end of the first wall portion and an outer end of the second wall portion;
a valve seat contact portion positioned adjacent the peripheral seal retention groove closest the second wall portion, the valve seat contact portion operable to contact a corresponding portion of a valve seat to assist with the closure between the valve body and the valve seat;
and
a top portion positioned a distance from the peripheral seal retention groove closest the first wall portion;
wherein the at least one serration of the first wall portion and the second wall portion includes a tip that is generally directed toward the closed end.

5 more elements

A valve body and seal assembly having a longitudinal axis of symmetry, the assembly comprising:

a peripheral seal retention groove positioned around the assembly and spaced apart from the longitudinal axis of symmetry, the seal retention groove defining a seal receiving portion of the assembly that is operable to receive at least one elastomeric seal, the peripheral seal retention groove including:
a first wall portion extending peripherally around the assembly and having at least one serration extending peripherally around the assembly,
a second wall portion at least partially facing the first wall portion and extending peripherally around the assembly and having at least one serration extending peripherally around the assembly, and
a curvilinear portion positioned between the first wall portion and the second wall portion to form a closed portion of the peripheral seal retention groove, the closed portion positioned opposite an open portion of the peripheral seal retention groove defined as the area between an outer end of the first wall portion and an outer end of the second wall portion;
a valve seat contact portion positioned adjacent the peripheral seal retention groove closest the second wall portion, the valve seat contact portion operable to contact a corresponding portion of a valve seat to assist with the closure between the assembly and the valve seat;
a top portion positioned a distance from the peripheral seal retention groove closest the first wall portion;
and
an elastomeric seal positioned at least partially in the seal receiving portion of the peripheral seal retention groove and extending through the open portion of the peripheral seal retention groove;
wherein the at least one serration of the first wall portion and the second wall portion includes a tip that is generally directed toward the closed end of the peripheral seal retention groove.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/899,112Filed 21 May 2013 · division
Priority: 16 Apr 2001
Granted: 22 Mar 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

F16K 1/46
Cutting-off parts, e.g. valve members, seats: attachment of sealing rings
F16K 1/36
Cutting-off parts, e.g. valve members, seats: valve members
F16K 15/063
With guided stems: the valve being loaded by a spring
F16K 25/005
Details relating to contact between valve members and seats: particular materials for seats or closure elements

Family

Application09/836,043Parent of this continuation-in-part · filed 16 Apr 2001
Application10/179,804Parent of this continuation-in-part · filed 25 Jun 2002
Application11/148,081Parent of this continuation-in-part · filed 8 Jun 2005
US 6,955,181 B1Parent of this continuation-in-part · filed 18 Oct 2005
Application11/567,127Parent of this continuation-in-part · filed 5 Dec 2006
US 7,168,440 B1Parent of this continuation-in-part · filed 30 Jan 2007
Application12/472,399Parent of this division · filed 27 May 2009
Application12/472,399Parent of this continuation-in-part
US 9,291,274 B1This patent

From the US filing history. Foreign family members aren’t listed.