Patent US4537384A successfully refreshed from Google Patents.
US4537384A
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US
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In-line check valve having combined downstream poppet support and flow control elements
Assignee: Brunswick Corp
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Filing: 1984-07-17
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Granted: 1985-08-27
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Expires: 2004-07-17
Abstract
Abstract A poppet-type check valve utilizing an integral detachable flow control assembly for insertion into a cooperating housing. The checking poppet is oriented with its actuating stem, concentric guide, and concentric force bias spring downstream of the check flow controlled orifice. In a preferred embodiment, the flow control assembly is located internal of a housing having a first flow length adjacent the controlled flow orifice and seat, and a second converging flow length abutting said first flow length, and a terminating flow outlet adjacent the valve outlet port. When mounted internal of the preferred housing, the valve poppet assembly lies partially within the first flow area and extends a predetermined distance into the converging section, thereby greatly reducing turbulence and having a demonstrated reduction in medium flow pressure drop over presently used units.
Inventors
- 👤 Oscar J. Petersen
- 👤 Ross J. Barton
- 👤 Jack E. Dalke
- 👤 Gerald W. Sheffield
- 👤 Theodore Towle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:33
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/06; F16K15/063; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7932
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
220 words
In an in-line check valve of the type employing an internal seat, and reciprocating spring biased poppet for preventing reverse flow through said seat, and allowing predetermined forward flow, the improvement comprising; an in-line housing having an internal concentric orifice; a seat seal circumferentially surrounding and partially embedded in said seat; an axially aligned poppet having a seal face cooperating with said seat seal for preventing flow therethrough; a stem on said poppet; a poppet support extending downstream from said orifice, defining a poppet guide; means mounting said poppet stem internal said guide for reciprocating motion therein; means mounting said poppet support in said housing thereby defining a first relief flow passage downstream said seat and a second flow passage extending therefrom, and a fluid containment chamber for poppet flow and check positions, respectively; said poppet support extending through said first flow passage and into said second flow passage; a compression spring concentric said poppet guide and intermediate said seal face and guide; means on said guide and poppet initially compressing said spring and establishing a predetermined poppet/seal force; wherein upstream pressure on said poppet seal face in excess of a predetermined value, on overcoming said poppet spring bias, translate said poppet downstream, thereby disengaging said poppet and seal, establishing flow through said passage and around said poppet stem guides.
Claim 2
Dependent Claim
220 words
In an in-line check valve of the type employing an internal seat, and reciprocating spring biased poppet for preventing reverse flow through said seat, and allowing predetermined forward flow, the improvement comprising; an in-line housing having an internal concentric orifice; a seat seal circumferentially surrounding and partially embedded in said seat; an axially aligned poppet having a seal face cooperating with said seat seal for preventing flow therethrough; a stem on said poppet; a poppet support extending downstream from said orifice, defining a poppet guide; means mounting said poppet stem internal said guide for reciprocating motion therein; means mounting said poppet support in said housing thereby defining a first relief flow passage downstream said seat and a second flow passage extending therefrom, and a fluid containment chamber for poppet flow and check positions, respectively; said poppet support extending through said first flow passage and into said second flow passage; a compression spring concentric said poppet guide and intermediate said seal face and guide; means on said guide and poppet initially compressing said spring and establishing a predetermined poppet/seal force; wherein upstream pressure on said poppet seal face in excess of a predetermined value, on overcoming said poppet spring bias, translate said poppet downstream, thereby disengaging said poppet and seal, establishing flow through said passage and around said poppet stem guides.
Claim 3
Dependent Claim
22 words
The valve of claim 1 wherein said poppet support extends through said first flow length and partially into said second flow length.
Claim 4
Dependent Claim
22 words
The valve of claim 2, wherein said first flow length is essentially cylindrical and said second flow length is a truncated conoid.
Claim 5
Dependent Claim
18 words
The valve of claim 1 wherein said poppet support mounting means includes primary and secondary fluid containment seals.
Claim 6
Dependent Claim
22 words
The valve of claim 5 wherein said primary seal is a resilient "O"-ring and said secondary seal is achieved by metal-to-metal contact.
Claim 7
Dependent Claim
216 words
An in-line check valve comprising a valve housing having an internal concentric orifice for controlling flow therethrough, said housing defining a forward flow passage extending from said seat, said forward flow passage having a first flow length portion adjacent said orifice, and the second flow length portion disposed intermediate said first portion and valve outlet; and, a seat surrounding said orifice; a seat seal surrounding and partially embedded in said seat; an axially disposed poppet having a seal face cooperating with said seal in preventing flow therethrough in the check position; a stem on said poppet extending downstream from said seal face; a poppet support extending in said forward flow direction and defining a poppet stem guide; means mounting said poppet stem internal said guide for reciprocating motion therein; means mounting said poppet support in said first flow portion and extending therefrom into said flow portion; a compression spring, concentric said poppet guide and intermediate said seal face in the guide; means on said guide and poppet initially biasing said spring, thereby establishing a predetermined poppet seal force; wherein upstream pressure on said poppet seal face in excess of a predetermined value, overcomes said poppet spring bias, translating said poppet downstream, and disengaging said poppet and seal, and establishing flow through said orifice and flow passage.
Claim 8
Dependent Claim
216 words
An in-line check valve comprising a valve housing having an internal concentric orifice for controlling flow therethrough, said housing defining a forward flow passage extending from said seat, said forward flow passage having a first flow length portion adjacent said orifice, and the second flow length portion disposed intermediate said first portion and valve outlet; and, a seat surrounding said orifice; a seat seal surrounding and partially embedded in said seat; an axially disposed poppet having a seal face cooperating with said seal in preventing flow therethrough in the check position; a stem on said poppet extending downstream from said seal face; a poppet support extending in said forward flow direction and defining a poppet stem guide; means mounting said poppet stem internal said guide for reciprocating motion therein; means mounting said poppet support in said first flow portion and extending therefrom into said flow portion; a compression spring, concentric said poppet guide and intermediate said seal face in the guide; means on said guide and poppet initially biasing said spring, thereby establishing a predetermined poppet seal force; wherein upstream pressure on said poppet seal face in excess of a predetermined value, overcomes said poppet spring bias, translating said poppet downstream, and disengaging said poppet and seal, and establishing flow through said orifice and flow passage.
Claim 9
Dependent Claim
23 words
The valve of claim 6 wherein said first flow length portion is essentially cylindrical and said second flow length is a truncated conoid.
References Cited (Backward Citations)
US2745628A
Cited
US3199532A
Cited
US3329154A
Cited
US3373764A
Cited
US3688794A
Cited
US4152893A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-26 | 1989-02-25 | 1989-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-26 | 1993-02-25 | 1993-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-26 | 1997-02-25 | 1997-08-27 | $7700.00 | Window Closed / Lapsed |