Patent US3800824A successfully refreshed from Google Patents.
US3800824A
Expired / Lapsed
US
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Check valve
Assignee: CLAYTON MARK Inc
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Filing: 1973-03-12
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Granted: 1974-04-02
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Expires: 1993-03-12
Abstract
Abstract A check valve for controlling the flow of a fluid in a fluid system includes a valve stem guide formed by an assembly of a plurality of thin, resilient members biased together in a contacting engagement and forming an elongated guide channel for the valve stem. The assembly further forms a limit or shoulder for a compression spring used to bias a poppet of the check valve to a closed condition. Each of the members of the assembly includes a plurality of segments. In an unbiased assembled condition, where N equals the number of members in the assembly, two of the segments of each of the N members form an angle of substantially greater than 360/N degrees. In a biased assembled condition, the same two segments of each of the N members form an angle of approximately 360/N degrees.
Inventors
- 👤 C Medina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:30
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/065; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931; Y10T137/7932; Y10T137/7933
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
A valve for controlling the flow of a fluid in a fluid system comprising an elongated body, a bore in said body, a valve seat at one end portion of said bore, a poppet adapted to engage said valve seat in a fluid-tight sealing engagement, an elongated valve stem attached to said poppet and longitudinally extending through at least a portion of said bore and means in said bore for guiding said valve stem, said guiding means comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition.
Claim 2
Dependent Claim
151 words
A valve for controlling the flow of a fluid in a fluid system comprising an elongated body, a bore in said body, a valve seat at one end portion of said bore, a poppet adapted to engage said valve seat in a fluid-tight sealing engagement, an elongated valve stem attached to said poppet and longitudinally extending through at least a portion of said bore and means in said bore for guiding said valve stem, said guiding means comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition.
Claim 3
Dependent Claim
23 words
A valve as defined in claim 1 further comprising biasing means for maintaining said popppet and said valve seat in said sealing engagement.
Claim 4
Dependent Claim
23 words
A valve as defined in claim 2 wherein said biasing means includes an elongated coMpression spring encircling a portion of said valve stem.
Claim 5
Dependent Claim
48 words
A valve as defined in claim 3 further comprising a threaded nut engagable with a portion of said valve stem and forming a lower shoulder or limit for said spring, said plurality of members in said biased assembled condition forming an upper shoulder or limit for said spring.
Claim 6
Dependent Claim
218 words
A valve for controlling the flow of a fluid in a fluid system comprising an elongated body, a bore in said body, a valve seat at one end portion of said bore, a poppet adapted to engage said valve seat in a fluid-tight sealing engagement, an elongated valve stem attached to said poppet and longitudinally extending through at least a portion of said bore and means in said bore for guiding said valve stem, said guiding means comprising a plurality of thin, resilient members assembed and biased together in a contacting engagement and forming an elongated guide channel for said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition, each of said plurality of members including a plurality of segments, two segments of said plurality of segments forming an angle substantially greater than 360/N degrees in said plane, where N equals the number of said plurality of members, when said members are in said unbiased assembled condition and forming an angle of approximately 360/N degrees when said plurality of members are in said biased assembled condition.
Claim 7
Dependent Claim
218 words
A valve for controlling the flow of a fluid in a fluid system comprising an elongated body, a bore in said body, a valve seat at one end portion of said bore, a poppet adapted to engage said valve seat in a fluid-tight sealing engagement, an elongated valve stem attached to said poppet and longitudinally extending through at least a portion of said bore and means in said bore for guiding said valve stem, said guiding means comprising a plurality of thin, resilient members assembed and biased together in a contacting engagement and forming an elongated guide channel for said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition, each of said plurality of members including a plurality of segments, two segments of said plurality of segments forming an angle substantially greater than 360/N degrees in said plane, where N equals the number of said plurality of members, when said members are in said unbiased assembled condition and forming an angle of approximately 360/N degrees when said plurality of members are in said biased assembled condition.
Claim 8
Dependent Claim
11 words
A valve as defined in claim 5 where N equals 3.
Claim 9
Independent Claim
96 words
A device for guiding the longitudinal movement of a valve stem through a portion of an elongated bore of a valve comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for guiding said valve stem, the outer periphery of said plurality of members in an unbiased asembed condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition.
Claim 10
Independent Claim
96 words
A device for guiding the longitudinal movement of a valve stem through a portion of an elongated bore of a valve comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for guiding said valve stem, the outer periphery of said plurality of members in an unbiased asembed condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition.
Claim 11
Dependent Claim
29 words
A device as defined in claim 7 wherein each of said plurality of members have substantially the same physical dimensions as the remaining ones of said plurality of members.
Claim 12
Independent Claim
163 words
A device for guiding the longitudinal movement of a valve stem through a portion of an elongated bore of a valve comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for guiding said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition, each of said plurality of members including a plurality of segments, two segments of said plurality of segments forming an angle substantially greater than 360/N degrees in said plane, where N equals the number of said plurality of members, when said members are in said unbiased assembled condition and forming an angle of approximately 360/N degrees when said plurality of members are in said biased assembled condition.
Claim 13
Independent Claim
163 words
A device for guiding the longitudinal movement of a valve stem through a portion of an elongated bore of a valve comprising a plurality of thin, resilient members assembled and biased together in a contacting engagement and forming an elongated guide channel for guiding said valve stem, the outer periphery of said plurality of members in an unbiased assembled condition circumscribing an area in a plane transverse to the longitudinal direction of said guide channel of a greater magnitude than the area circumscribed by said periphery of said plurality of members in a biased assembled condition, each of said plurality of members including a plurality of segments, two segments of said plurality of segments forming an angle substantially greater than 360/N degrees in said plane, where N equals the number of said plurality of members, when said members are in said unbiased assembled condition and forming an angle of approximately 360/N degrees when said plurality of members are in said biased assembled condition.
Claim 14
Dependent Claim
11 words
A device as defined in claim 9 where N equals 3.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |