US3737144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve
Assignee: Zero Manufacturing Co
•
Filing: 1972-02-09
•
Granted: 1973-06-05
•
Expires: 1992-02-09
Abstract
Abstract A butterfly valve has a turntable disc within a resilient, tubular seat member, the latter forming part of a conduit. The entire unit can be quickly disassembled for cleaning by detaching a segmented clamp which normally connects the tubular member with circular couplers at each side of the seat member. The couplers have grooves to receive raised ribs on each side of the tubular seat so that a tight seal can be formed. The clamp compresses the resilient tubular seat to insure a seal for the disc when the latter is turned to close the valve.
Inventors
- 👤 L Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:36
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K27/00; F16K27/02; F16K27/0209; F16K27/0218
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
54 words
A butterfly valve for quick disassembly comprising a turnable disc mounted within a resilient tubular member to comprise a valved conduit, releasable clamp means encircling the outer dimensions of said tubular member, said clamp means comprising two hinged together segments connected by toggle means for pulling said parts together and compressing said tubular member.
Claim 2
Dependent Claim
54 words
A butterfly valve for quick disassembly comprising a turnable disc mounted within a resilient tubular member to comprise a valved conduit, releasable clamp means encircling the outer dimensions of said tubular member, said clamp means comprising two hinged together segments connected by toggle means for pulling said parts together and compressing said tubular member.
Claim 3
Dependent Claim
34 words
The valve of claim 1 wherein said conduit includes a circular coupler on each side of said resilient tubular member and the clamp means encircles a flange of each coupler against said tubular member.
Claim 4
Dependent Claim
32 words
The valve of claim 2 wherein said resilient tubular member has sides with raised ribs and each coupler has a groove which interfits with a rib when said valve body is assembled.
Claim 5
Dependent Claim
14 words
The valve of claim 3 wherein said raised ribs are concentric with said conduit.
Claim 6
Dependent Claim
36 words
The valve of claim 1 wherein said valve disc includes a stem which is passed through aperture means in said tubular member, said stem also extending through one of said segments to comprise a valve handle.
Claim 7
Dependent Claim
26 words
The valve of claim 5 wherein said valve disc is generally circular with thickened rounded opposite outer edges adjacent the aperture means in said tubular member.
Claim 8
Dependent Claim
38 words
The valve of claim 1 wherein said clamp means comprises two semi-circular segments which are hinged together at adjacent ends by a tongue and slot connection, the opposite ends of said segments being connected by a toggle joint.
Claim 9
Dependent Claim
29 words
The valve of claim 7 wherein said toggle joint includes a stud on a first segment and slot means for receiving said stud pivotably connEcted to the second segment.
Claim 10
Dependent Claim
44 words
The valve of claim 8 wherein a screw adjustment is associated with said stud to bear on said slot means when said segments are connected to one another whereby the amount of compression by said clamp means on said tubular member can be adjusted.
References Cited (Backward Citations)
US763191A
Cited
US2338759A
Cited
US3048363A
Cited
US3424430A
Cited
US3476410A
Cited
US3598365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |