US3703191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve device
Assignee: Interspiro AB
•
Filing: 1970-12-23
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Granted: 1972-11-21
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Expires: 1990-12-23
Abstract
Abstract A valve device comprising a valve housing with a feeding channel, the inlet of which has a valve seat and a balanced valve member arranged to contact said valve seat. The valve is provided with an inner pressure sensitive chamber which is connected with the inlet via an opening in the chamber walls. The pressure sensitive chamber is arranged to operate the valve body in the opening direction and bring it out of balance at a predetermined pressure.
Inventors
- 👤 Staffan Walter Ekstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:03
CPC Classifications
A; A62; A62B; A62B9/00; A62B9/02; A62B9/022; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
196 words
A valve device comprising: a valve housing having an inlet feed channel and an outlet feed channel, said inlet feed channel including a valve seat, a valve body movably mounted in said housing into and out of engagement with the valve seat to close and open communication between the inlet flow channel and the outlet flow channel, respectively, a spring means for urging the valve body into engagement with the valve seat, said valve body being hollow and including an opening facing and in fluid communication with the inlet flow channel, an inner expandable chamber mounted inside said hollow valve body and in fluid communication through said opening in the valve body with said inlet flow channel, a support member in said valve body, said support member including a supporting surface contacting the exterior of said expandable chamber, such that the support member is operable to disengage the valve body from the valve seat upon expansion of the expandable chamber, a spring means urging the supporting surface of the support member against the expandable chamber, and the area of the said support surface contacting the expandable chamber being equal to the area of the valve seat.
Claim 2
Dependent Claim
196 words
A valve device comprising: a valve housing having an inlet feed channel and an outlet feed channel, said inlet feed channel including a valve seat, a valve body movably mounted in said housing into and out of engagement with the valve seat to close and open communication between the inlet flow channel and the outlet flow channel, respectively, a spring means for urging the valve body into engagement with the valve seat, said valve body being hollow and including an opening facing and in fluid communication with the inlet flow channel, an inner expandable chamber mounted inside said hollow valve body and in fluid communication through said opening in the valve body with said inlet flow channel, a support member in said valve body, said support member including a supporting surface contacting the exterior of said expandable chamber, such that the support member is operable to disengage the valve body from the valve seat upon expansion of the expandable chamber, a spring means urging the supporting surface of the support member against the expandable chamber, and the area of the said support surface contacting the expandable chamber being equal to the area of the valve seat.
Claim 3
Dependent Claim
196 words
A valve device comprising: a valve housing having an inlet feed channel and an outlet feed channel, said inlet feed channel including a valve seat, a valve body movably mounted in said housing into and out of engagement with the valve seat to close and open communication between the inlet flow channel and the outlet flow channel, respectively, a spring means for urging the valve body into engagement with the valve seat, said valve body being hollow and including an opening facing and in fluid communication with the inlet flow channel, an inner expandable chamber mounted inside said hollow valve body and in fluid communication through said opening in the valve body with said inlet flow channel, a support member in said valve body, said support member including a supporting surface contacting the exterior of said expandable chamber, such that the support member is operable to disengage the valve body from the valve seat upon expansion of the expandable chamber, a spring means urging the supporting surface of the support member against the expandable chamber, and the area of the said support surface contacting the expandable chamber being equal to the area of the valve seat.
Claim 4
Dependent Claim
196 words
A valve device comprising: a valve housing having an inlet feed channel and an outlet feed channel, said inlet feed channel including a valve seat, a valve body movably mounted in said housing into and out of engagement with the valve seat to close and open communication between the inlet flow channel and the outlet flow channel, respectively, a spring means for urging the valve body into engagement with the valve seat, said valve body being hollow and including an opening facing and in fluid communication with the inlet flow channel, an inner expandable chamber mounted inside said hollow valve body and in fluid communication through said opening in the valve body with said inlet flow channel, a support member in said valve body, said support member including a supporting surface contacting the exterior of said expandable chamber, such that the support member is operable to disengage the valve body from the valve seat upon expansion of the expandable chamber, a spring means urging the supporting surface of the support member against the expandable chamber, and the area of the said support surface contacting the expandable chamber being equal to the area of the valve seat.
Claim 5
Dependent Claim
35 words
A valve device according to claim 1, said support member arranged to cooperate with the valve body to disengage the valve body from the valve seat at a predetermined pressure in the inlet feed channel.
Claim 6
Dependent Claim
43 words
A valve device according to claim 2, wherein the support member spring cooperates with a portion of the fixed valve housing through openings in the valve body, whereby the support member moves relative to the valve housing to act as a safety valve.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |