US3884261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remotely activated valve
Assignee: Individual
•
Filing: 1973-11-26
•
Granted: 1975-05-20
•
Expires: 1993-11-26
Abstract
Abstract A valve for a pipe formed from two semicylindrical portions, each of which is enclosed in a rubber envelope. A mounting is provided for rigidly mounting the semicylindrical portions in a generally cylindrical configuration. An anchor is attached to the mounting for securing the valve in the pipe, and a fluid system communicates between the semicylindrical portions and the rubber envelope so that, when fluid is forced in the space between the semicylindrical portions into the rubber envelope, the envelope will expand, both toward the pipe wall, sealing it, and toward the center, closing it off from passage of fluids thereby.
Inventors
- 👤 Frank Clynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:04
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/12; E21B33/127; E21B34/00; E21B34/16; F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/136; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
A valve for a pipe comprising: a. first and second semicylindrical portions; b. first and second flexible envelopes enclosing said first and second semicylindrical portions; c. means for rigidly mounting said semicylindrical portions in a generally cylindrical configuration defining first and second ends; d. means attached to one end for retaining said cylindrical configuration in a fixed position in said pipe; and e. means for filling the space between said first and second semicylindrical portions and associated rubber envelope with a compressed fluid to expand said envelopes into a pipe closing position.
Claim 2
Dependent Claim
92 words
A valve for a pipe comprising: a. first and second semicylindrical portions; b. first and second flexible envelopes enclosing said first and second semicylindrical portions; c. means for rigidly mounting said semicylindrical portions in a generally cylindrical configuration defining first and second ends; d. means attached to one end for retaining said cylindrical configuration in a fixed position in said pipe; and e. means for filling the space between said first and second semicylindrical portions and associated rubber envelope with a compressed fluid to expand said envelopes into a pipe closing position.
Claim 3
Dependent Claim
34 words
A valve as disclosed in claim 1 wherein each of said flexible envelopes contains an impregnated wire mesh having a portion of the mesh rigidly attached to said means for mounting said semi-cylindrical portions.
Claim 4
Dependent Claim
43 words
A valve as described in claim 1 wherein said means for filling the space comprises a high pressure fluid-filled container, communication means between said container and said space, and means for controlling the passage of fluid from said container to said communication means.
Claim 5
Dependent Claim
31 words
A valve as described in claim 3 wherein said means for controlling the passage of fluid comprises a remote valve and a pressure responsive means connected to operate said remote valve.
Claim 6
Dependent Claim
31 words
A valve as described in claim 3 wherein said means for controlling the passage of fluid comprises an electrically actuated remote valve and electrical circuit means connected to said remote valve.
Claim 7
Dependent Claim
34 words
A valve as described in claim 3 wherein said means for controlling the passage of fluid comprises a hydraulically controlled remote valve and hydraulic circuit means connected between remote location and said remote valve.
Claim 8
Dependent Claim
130 words
A storm choke valve for a well casing comprising: a. first and second semicylindrical portions; b. first and second ring means; c. first and second flexible envelope means covering said first and second semicylindrical portions, respectively; d. means for rigidly mounting said first and second envelope covered semicylindrical portions to form a cylinder having a top and bottom, said top being attached to said first ring means and said bottom being attached to said second ring means; e. casing engaging means mounted to said first ring means; f. fluid passage means; g. fluid source means; and h. means for communicating fluid from said fluid source means through said fluid passage means to each arcuate side of each of said semicylindrical portions to expand said envelopes into a pipe closing position.
Claim 9
Dependent Claim
130 words
A storm choke valve for a well casing comprising: a. first and second semicylindrical portions; b. first and second ring means; c. first and second flexible envelope means covering said first and second semicylindrical portions, respectively; d. means for rigidly mounting said first and second envelope covered semicylindrical portions to form a cylinder having a top and bottom, said top being attached to said first ring means and said bottom being attached to said second ring means; e. casing engaging means mounted to said first ring means; f. fluid passage means; g. fluid source means; and h. means for communicating fluid from said fluid source means through said fluid passage means to each arcuate side of each of said semicylindrical portions to expand said envelopes into a pipe closing position.
Claim 10
Dependent Claim
34 words
A valve as described in claim 7 wherein each of said flexible envelopes contains an impregnated wire mesh having a portion of the mesh rigidly attached to said means for mounting said semi-cylindrical portions.
Claim 11
Dependent Claim
56 words
A valve as described in claim 7 wherein said (means for filling the space) fluid source means comprises a high pressure fluid-filled container, (communication means between said container and said space, and) and wherein said fluid passage means includes means for controlling the passage of fluid from said high pressure container to said fluid passage means.
Claim 12
Dependent Claim
31 words
A valve as described in claim 9 wherein said means for controlling the passage of fluid comprises a remote valve and a pressure responsive means connected to operate said remote valve.
Claim 13
Dependent Claim
31 words
A valve as described in claim 9 wherein said means for controlling the passage of fluid comprises an electrically actuated remote valve and electrical circuit means connected to said remote valve.
Claim 14
Dependent Claim
35 words
A valve as described in claim 9 wherein said means for controlling the passage of fluid comprises a hydraulically controlled remote valve and hydraulic circuit means connected between a remote location and said remote valve.
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) | 1978-05-19 | 1978-11-18 | 1979-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-19 | 1982-11-18 | 1983-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-19 | 1986-11-18 | 1987-05-20 | $7700.00 | Window Closed / Lapsed |