Patent US3565393A successfully refreshed from Google Patents.
US3565393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade valves
Assignee: Individual
•
Filing: 1968-12-16
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Granted: 1971-02-23
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Expires: 1988-12-16
Abstract
Abstract A flat blade that is supported in cantilever fashion as it moves across a flow path to close said flow path, the flow path having resilient sealing means that can be expanded into contact with the two side edges of the blade after the blade has been moved to its closure setting. There is also resilient sealing means that can be expanded into contact with the leading edge of the blade after the blade has been moved to its closure setting. The blade is supported in cantilever fashion at one end by providing said end of the blade with a plurality of pistons slidable in a cylinder.
Inventors
- 👤 William John Courtney Trythall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:42
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/20; F16K3/207; F16K3/0254; F16K3/0263
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
96 words
A valve comprising a housing having a rectangular-shaped flow path, a layer of resilient material lining said flow path, a rectangular blade movable in its own plane across said flow path to a closure setting within the flow path, the blade passing through the resilient material on one of the sides of said rectangular-shaped flow path, the lining on the remaining three sides of the rectangular-shaped flow path being expansible in the plane of the path of movement of the blade into engagement with the blade after the blade has been moved to its closure setting.
Claim 2
Dependent Claim
96 words
A valve comprising a housing having a rectangular-shaped flow path, a layer of resilient material lining said flow path, a rectangular blade movable in its own plane across said flow path to a closure setting within the flow path, the blade passing through the resilient material on one of the sides of said rectangular-shaped flow path, the lining on the remaining three sides of the rectangular-shaped flow path being expansible in the plane of the path of movement of the blade into engagement with the blade after the blade has been moved to its closure setting.
Claim 3
Dependent Claim
79 words
A valve as claimed in claim 1 and in which the resilient lining is bonded to the rectangular-shaped flow path along spaced apart areas so as to leave nonbonded areas between the resilient material and said housing in the plane of movement of the blade; and gas or liquid pressure supply means coupled to said nonbonded areas to cause the nonbonded areas of resilient material to be expanded in the plane of the blade into engagement with the blade.
Claim 4
Dependent Claim
112 words
A valve as claimed in claim 2 and wherein there are recesses in the housing in the plane of motion of the flat blade and facing the two side edges of the flat blade, the expansible resilient material having a portion that extends into said recesses but is not bonded thereto to leave a gap between the expansible resilient material and said recesses, into which gap compressed gas or liquid can be forced to expand the resilient material in the plane of movement of the blade into engagement with the blade when in its closure setting, the resilient material being bonded to the housing along areas on each side of said recesses.
Claim 5
Dependent Claim
79 words
A valve as claimed in claim 1 and wherein there is a recess in the housing in the plane of motion of the flat blade, and resilient material in said recess that is expandable into sealing relationship with the blade after it has moved to its closure setting, the resilient material in said recess being formed with a bore such that when compressed gas or liquid is fed into said bore the resilient material is expandable towards the blade.
Claim 6
Dependent Claim
105 words
A valve comprising a housing through which a flow path extends and a flat blade movable across said flow path, means for supporting and moving said flat blade, the flat blade being rigid and supported only at one end in said means For moving the same as it moves across the flow path, the flow path having resilient sealing means that can be expanded into contact with the two sides edges of the blade after the blade has been moved to its closure setting, whereby the flat blade is free from any support along its two side edges as it moves across the flow path.
Claim 7
Dependent Claim
105 words
A valve comprising a housing through which a flow path extends and a flat blade movable across said flow path, means for supporting and moving said flat blade, the flat blade being rigid and supported only at one end in said means For moving the same as it moves across the flow path, the flow path having resilient sealing means that can be expanded into contact with the two sides edges of the blade after the blade has been moved to its closure setting, whereby the flat blade is free from any support along its two side edges as it moves across the flow path.
References Cited (Backward Citations)
US1868147A
Cited
US2771094A
Cited
US2842283A
Cited
US3081974A
Cited
FR1251449A
Cited
US3180236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |