US4076035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve construction
Assignee: Day International Corp
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Filing: 1976-12-20
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Granted: 1978-02-28
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Expires: 1996-12-20
Abstract
Abstract A butterfly valve construction is provided and has a valve body comprised of two roughly semicylindrical portions having open ends and such portions have their open ends detachably connected together to define a valve body as a pair of back-to-back roughly D-shaped portions and the D-shaped portions have a pair of valve members each rotatably mounted within an associated D-shaped portion with a device being provided for rotating the valve members to open and close same.
Inventors
- 👤 Paul P. Frisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:41
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/165; F16K1/18; F16K1/22; F16K1/221; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/87467; Y10T137/87483
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
80 words
A butterfly valve construction comprising, a valve body comprised of two roughly semicylindrical portions having open ends, means comprising a box-like assembly connecting said open ends to define said valve body as a pair of back-to-back roughly D-shaped portions, a pair of valve members each rotatably mounted within an associated D-shaped portion, a pair of barrier structures at opposite ends of each D-shaped portion adjoining said bar-like assembly, and means for rotating said valve members to open and close same.
Claim 2
Dependent Claim
80 words
A butterfly valve construction comprising, a valve body comprised of two roughly semicylindrical portions having open ends, means comprising a box-like assembly connecting said open ends to define said valve body as a pair of back-to-back roughly D-shaped portions, a pair of valve members each rotatably mounted within an associated D-shaped portion, a pair of barrier structures at opposite ends of each D-shaped portion adjoining said bar-like assembly, and means for rotating said valve members to open and close same.
Claim 3
Dependent Claim
35 words
A valve construction as set forth in claim 1 and further comprising shaft means for each of said valve members, each of said shaft means having inner end portions rotatably supported in associated barrier structures.
Claim 4
Dependent Claim
45 words
A valve construction as set forth in claim 2 in which said rotating means comprises a mechanical assembly operatively connected to said shaft means, and an actuator connected to said linkage assembly for moving same and thus rotating said shaft means and valve members simultaneously.
Claim 5
Dependent Claim
25 words
A valve construction as set forth in claim 3 in which each of said valve members has strengthening ribs defined as an integral part thereof.
Claim 6
Dependent Claim
24 words
A valve construction as set forth in claim 1 and further comprising a pair of mounting flanges adjoining opposite sides of each semicylindrical portion.
Claim 7
Dependent Claim
35 words
A valve construction as set forth in claim 5 in which the axial height of each semicylindrical portion and hence said valve body is a small fractional part of the diameter of said valve construction.
Claim 8
Dependent Claim
22 words
A valve construction as set forth in claim 1 in which each of said valve members has a substantially D-shaped peripheral outline.
Claim 9
Dependent Claim
39 words
A valve construction as set forth in claim 7 in which said box-like assembly is defined by two sets of U-shaped members, and said valve body has a roughly circular peripheral outline generally of the order of ten feet.
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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |