US3554223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure control valve assembly and method of calibration
Assignee: Motors Liquidation Co
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Filing: 1969-05-01
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Granted: 1971-01-12
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Expires: 1989-05-01
Abstract
Abstract In preferred form, a pressure control valve assembly including a hollow cylindrical housing having an open end and a closed end formed by a conical member including a centrally located inlet port therein, the open end of the cylindrical member is closed by a sheet metal spring retainer having a continuously formed relatively rigid peripheral flange thereon joined by a continuously formed surface inclined downwardly into the interior of the hollow cylindrical housing to a centrally located inverted cup formation located coaxially of the inlet port. The cup formation is plastically deformable relative to the peripheral flange to set a relief pressure of a ball check element held against the inlet port by a spring element carried by the cup formation.
Inventors
- 👤 James M Shea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:46
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0406; F16K15/00; F16K15/02; F16K15/04; F16K15/044; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7927
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
233 words
A relief valve assembly comprising a housing having a hollow cylindrical portion and a base portion, an opening in said base portion, a ball check element seated on said base portion interiorly thereof and in overlying relationship to said opening therethrough, a spring retainer in said hollow cylindrical portion including a radially outwardly directed flange thereon, means securing said flange to said cylindrical portion to fix said retainer with respect thereto, said retainer further including a centrally located inverted cup portion arranged coaxially of said valve opening, a plurality of tabs depending from said cup portion defining a cage below said inverted cup, a spring element having one end thereof in engagement with said ball check element and an opposite end portion thereon seated within said inverted cup portion for biasing said ball check element against said closed end portion to close said opening therethrough and establish a relief pressure control point, said cage-forming tab elements surrounding said spring element to maintain it in axial alignment with said check element, said retainer including a plurality of openings therein located outwardly of each of said depending tabs for flow of fluid through said housing, said openings allowing said inverted cup portion to be axially deflected inwardly of said cylindrical portion in the direction of said base portion to set the pressure point at which said ball element will lift from said base portion opening.
Claim 2
Dependent Claim
233 words
A relief valve assembly comprising a housing having a hollow cylindrical portion and a base portion, an opening in said base portion, a ball check element seated on said base portion interiorly thereof and in overlying relationship to said opening therethrough, a spring retainer in said hollow cylindrical portion including a radially outwardly directed flange thereon, means securing said flange to said cylindrical portion to fix said retainer with respect thereto, said retainer further including a centrally located inverted cup portion arranged coaxially of said valve opening, a plurality of tabs depending from said cup portion defining a cage below said inverted cup, a spring element having one end thereof in engagement with said ball check element and an opposite end portion thereon seated within said inverted cup portion for biasing said ball check element against said closed end portion to close said opening therethrough and establish a relief pressure control point, said cage-forming tab elements surrounding said spring element to maintain it in axial alignment with said check element, said retainer including a plurality of openings therein located outwardly of each of said depending tabs for flow of fluid through said housing, said openings allowing said inverted cup portion to be axially deflected inwardly of said cylindrical portion in the direction of said base portion to set the pressure point at which said ball element will lift from said base portion opening.
Claim 3
Dependent Claim
197 words
A relief valve assembly comprising a housing having a hollow cylindrical portion and a base portion, an opening in said base portion, a ball check element seated on said base portion interiorly thereof and in overlying relationship to said opening therethrough, a spring retainer in said hollow cylindrical portion including a radially outwardly directed flange thereon, means securing said flange to said cylindrical portion to fix said retainer with respect thereto, said retainer further including a centrally located inverted cup portion arranged coaxially of said valve opening, a spring element having one end thereof in engagement with said ball check element and an opposite end portion thereon seated within said inverted cup portion for biasing said ball check element against said closed end portion to close said opening therethrough and establish a relief pressure control point, said retainer including a plurality of openings therein located outwardly of said cup portion for flow of fluid through said housing, said openings allowing said inverted cup portion to be axially deflected inwardly of said cylindrical portion in the direction of said base portion to set the pressure point at which the ball element will lift from the base portion opening.
Claim 4
Dependent Claim
197 words
A relief valve assembly comprising a housing having a hollow cylindrical portion and a base portion, an opening in said base portion, a ball check element seated on said base portion interiorly thereof and in overlying relationship to said opening therethrough, a spring retainer in said hollow cylindrical portion including a radially outwardly directed flange thereon, means securing said flange to said cylindrical portion to fix said retainer with respect thereto, said retainer further including a centrally located inverted cup portion arranged coaxially of said valve opening, a spring element having one end thereof in engagement with said ball check element and an opposite end portion thereon seated within said inverted cup portion for biasing said ball check element against said closed end portion to close said opening therethrough and establish a relief pressure control point, said retainer including a plurality of openings therein located outwardly of said cup portion for flow of fluid through said housing, said openings allowing said inverted cup portion to be axially deflected inwardly of said cylindrical portion in the direction of said base portion to set the pressure point at which the ball element will lift from the base portion opening.
Claim 5
Dependent Claim
207 words
A relief valve assembly comprising a hollow cylindrical housing having an open end and a base segment, a port through said base segment, a ball element closing said port, a coil spring having one end thereof seated on said ball element and the opposite end thereof extending centrally through said cylindrical housing, a spring retainer located within said housing including a continuously formed radially outwardly directed peripheral flange thereon and a centrally located inverted cup-shaped portion thereon receiving the opposite end of said coil spring, means on said housing for fixedly supporting the radially outwardly directed flange on the retainer, said retainer including a plurality of openings therein located circumferentially around said central inverted cup-shaped portion between it and said continuously formed radially outwardly directed flange to allow plastic deformation of said retainer to cause said cup-shaped portion to shift axially inwardly of said housing in the direction of said base portion thereof when a force is applied to said inverted cup-shaped portion thereby to control the spring force acting on said ball element, said continuously formed radially outwardly directed flange on said retainer maintaining a coaxial alignment of said inverted cup shaped portion and said ball element during the before described plastic deformation of said retainer.
Claim 6
Dependent Claim
207 words
A relief valve assembly comprising a hollow cylindrical housing having an open end and a base segment, a port through said base segment, a ball element closing said port, a coil spring having one end thereof seated on said ball element and the opposite end thereof extending centrally through said cylindrical housing, a spring retainer located within said housing including a continuously formed radially outwardly directed peripheral flange thereon and a centrally located inverted cup-shaped portion thereon receiving the opposite end of said coil spring, means on said housing for fixedly supporting the radially outwardly directed flange on the retainer, said retainer including a plurality of openings therein located circumferentially around said central inverted cup-shaped portion between it and said continuously formed radially outwardly directed flange to allow plastic deformation of said retainer to cause said cup-shaped portion to shift axially inwardly of said housing in the direction of said base portion thereof when a force is applied to said inverted cup-shaped portion thereby to control the spring force acting on said ball element, said continuously formed radially outwardly directed flange on said retainer maintaining a coaxial alignment of said inverted cup shaped portion and said ball element during the before described plastic deformation of said retainer.
Claim 7
Dependent Claim
277 words
A relief valve assembly comprising a hollow cylindrical housing having an open end and a base segment, a port through said base segment, a ball element closing said port, a coil spring having one end thereof seated on said ball element and the opposite end thereof extending centrally through said cylindrical housing, a spring retainer located within said housing including a continuously formed radially outwardly directed peripheral flange thereon and a centrally located inverted cup-shaped portion thereon receiving the opposite end of said coil spring, said housing including an upwardly facing shoulder supportingly receiving the radially outwardly directed flange on said retainer, said housing further including a flange directed radially inwardly thereof and overlying said retainer flange for fixedly securing it with respect to the said housing and to align said inverted cup-shaped portion thereon coaxially with said spring and said ball element, said retainer including a plurality of circumferentially spaced depending tabs thereon forming a cage around said spring for maintaining said spriNg in axial alignment with said ball element, said retainer including a plurality of openings therein located circumferentially around said central inverted cup-shaped portion between it and said continuously formed radially outwardly directed flange to allow plastic deformation of said retainer to cause said cup-shaped portion to shift axially inwardly of said housing in the direction of said base portion thereof when a force is applied to said inverted cup-shaped portion thereby to control the spring force acting on said ball element, said continuously formed radially outwardly directed flange on said retainer maintaining a coaxial alignment of said inverted cup-shaped portion and said ball element during the before described plastic deformation of said retainer.
Claim 8
Dependent Claim
277 words
A relief valve assembly comprising a hollow cylindrical housing having an open end and a base segment, a port through said base segment, a ball element closing said port, a coil spring having one end thereof seated on said ball element and the opposite end thereof extending centrally through said cylindrical housing, a spring retainer located within said housing including a continuously formed radially outwardly directed peripheral flange thereon and a centrally located inverted cup-shaped portion thereon receiving the opposite end of said coil spring, said housing including an upwardly facing shoulder supportingly receiving the radially outwardly directed flange on said retainer, said housing further including a flange directed radially inwardly thereof and overlying said retainer flange for fixedly securing it with respect to the said housing and to align said inverted cup-shaped portion thereon coaxially with said spring and said ball element, said retainer including a plurality of circumferentially spaced depending tabs thereon forming a cage around said spring for maintaining said spriNg in axial alignment with said ball element, said retainer including a plurality of openings therein located circumferentially around said central inverted cup-shaped portion between it and said continuously formed radially outwardly directed flange to allow plastic deformation of said retainer to cause said cup-shaped portion to shift axially inwardly of said housing in the direction of said base portion thereof when a force is applied to said inverted cup-shaped portion thereby to control the spring force acting on said ball element, said continuously formed radially outwardly directed flange on said retainer maintaining a coaxial alignment of said inverted cup-shaped portion and said ball element during the before described plastic deformation of said retainer.
Claim 9
Independent Claim
231 words
A method for calibrating a relief valve assembly of the type having a housing with a valve opening into the interior of the housing and wherein the valve opening is closed by a ball check element maintained against a valve seat in surrounding relationship to the valve opening by means of a relief valve spring, comprising the steps of: placing the ball check element and valve spring within the interior of the housing in overlying relationship to the valve opening therethrough, forming a spring retainer element to have a radially outwardly directed flange thereon and a centrally located inverted cup portion therein surrounded by a plurality of openings to allow relative yieldable movement between said inverted cup-shaped portion and the radially outwardly directed flange thereon, fixedly securing the retainer element in one end of said housing to receive one end of the valve spring when the opposite end thereof is seated on the ball check element for holding it in a loosely seated position with respect to the valve opening, directing fluid flow through the opening plastically deforming the retainer and concurrently compressing the spring between the retainer cup portion and the ball element to increase the spring force on the ball element thereby to produce a predetermined pressure differential across the ball check element, and thereafter terminating further deforming of the retainer and said fluid flow through the valve opening.
Claim 10
Independent Claim
231 words
A method for calibrating a relief valve assembly of the type having a housing with a valve opening into the interior of the housing and wherein the valve opening is closed by a ball check element maintained against a valve seat in surrounding relationship to the valve opening by means of a relief valve spring, comprising the steps of: placing the ball check element and valve spring within the interior of the housing in overlying relationship to the valve opening therethrough, forming a spring retainer element to have a radially outwardly directed flange thereon and a centrally located inverted cup portion therein surrounded by a plurality of openings to allow relative yieldable movement between said inverted cup-shaped portion and the radially outwardly directed flange thereon, fixedly securing the retainer element in one end of said housing to receive one end of the valve spring when the opposite end thereof is seated on the ball check element for holding it in a loosely seated position with respect to the valve opening, directing fluid flow through the opening plastically deforming the retainer and concurrently compressing the spring between the retainer cup portion and the ball element to increase the spring force on the ball element thereby to produce a predetermined pressure differential across the ball check element, and thereafter terminating further deforming of the retainer and said fluid flow through the valve opening.
Claim 11
Independent Claim
203 words
A method for calibrating a valve assembly of the type including a housing having a hollow interior with an inlet port thereto and an outlet opening therefrom and wherein the inlet port is closed by means of a ball element and spring member located within the interior of the housing, comprising the steps of: locating a sheet metal retainer within the housing including a relatively rigid segment thereon fixedly secured to the housing and a yieldable segment thereon located in alignment with the ball element and spring for holding the spring in place against the ball element to close the inlet port against flow at a low pressure, directing a first predetermined fluid flow at a first predetermined pressure through said inlet port to lift the ball element, applying a force against the yieldable retainer segment in accordance with the first predetermined pressure to increase the spring force on the ball element by deforming the yieldable segment with respect to the relatively or rigid segment so as to increase the pressure differential across the ball element, sensing a resultant pressure increase of fluid flowing through inlet port and terminating deformation of the yieldable segment of said retainer when a predetermined pressure increase occurs.
Claim 12
Independent Claim
203 words
A method for calibrating a valve assembly of the type including a housing having a hollow interior with an inlet port thereto and an outlet opening therefrom and wherein the inlet port is closed by means of a ball element and spring member located within the interior of the housing, comprising the steps of: locating a sheet metal retainer within the housing including a relatively rigid segment thereon fixedly secured to the housing and a yieldable segment thereon located in alignment with the ball element and spring for holding the spring in place against the ball element to close the inlet port against flow at a low pressure, directing a first predetermined fluid flow at a first predetermined pressure through said inlet port to lift the ball element, applying a force against the yieldable retainer segment in accordance with the first predetermined pressure to increase the spring force on the ball element by deforming the yieldable segment with respect to the relatively or rigid segment so as to increase the pressure differential across the ball element, sensing a resultant pressure increase of fluid flowing through inlet port and terminating deformation of the yieldable segment of said retainer when a predetermined pressure increase occurs.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |