Patent US2680748A successfully refreshed from Google Patents.
Patent EP0289111A2 successfully refreshed from Google Patents.
US3910312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling for pressure conduits
Assignee: Individual
•
Filing: 1974-04-22
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Granted: 1975-10-07
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Expires: 1994-04-22
Abstract
Abstract A coupling for pressure-conduits including coupling members having pressure-locking valves to avoid pressure-or fluid-loss on being disconnected, a sleeve for sealing between the two coupling members when they are partly assembled and a separate pressure equalizing valve for transferring to or equalizing pressure within the sealed area of the sleeve immediately prior to final assembly and locking of the coupling.
Inventors
- 👤 Karl Weinhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:12
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
200 words
A coupling for pressure conduits including a. a pair of coupling members, each of said coupling members having b. a main valve therein, said main valves each being adapted to be opened by abutment with c. an opening member on the opposite valve, a first of said main valves having d. an axial transfer bore therethrough, e. a pressure-transfer valve within said transfer bore, said pressure transfer valve including within said transfer bore f. a ball valve member, g. a conical valve seat and h. a spring, said spring being adapted to bias said ball against said valve seat, i. abutment means on said other main valve for unseating said ball immediately prior to full joining of said coupling, j. said main valves each including a face, said faces being adapted to abut each other, k. said axial transfer bore terminating in an outwardly tapered bore portion at said face of said first main valve, and l. said abutment means including a spherical opening member on the face of the other main valve and aligned with said outwardly tapered bore portion, said spherical opening member being of a size less than that which would obstruct said outwardly tapered bore portion.
Claim 2
Dependent Claim
200 words
A coupling for pressure conduits including a. a pair of coupling members, each of said coupling members having b. a main valve therein, said main valves each being adapted to be opened by abutment with c. an opening member on the opposite valve, a first of said main valves having d. an axial transfer bore therethrough, e. a pressure-transfer valve within said transfer bore, said pressure transfer valve including within said transfer bore f. a ball valve member, g. a conical valve seat and h. a spring, said spring being adapted to bias said ball against said valve seat, i. abutment means on said other main valve for unseating said ball immediately prior to full joining of said coupling, j. said main valves each including a face, said faces being adapted to abut each other, k. said axial transfer bore terminating in an outwardly tapered bore portion at said face of said first main valve, and l. said abutment means including a spherical opening member on the face of the other main valve and aligned with said outwardly tapered bore portion, said spherical opening member being of a size less than that which would obstruct said outwardly tapered bore portion.
Claim 3
Dependent Claim
63 words
A coupling as set forth in claim 1 in which one of said main valves has a bore for receiving at least a portion of the other main valve therein, and sealing means for sealing between said bore and said received portion of said other main valve to define a closed chamber, said closed chamber being in communication with said pressure transfer valve.
Claim 4
Dependent Claim
40 words
A coupling as set forth in claim 2 including a follower slideably mounted in said transfer bore between said spring and said ball, said follower having an axial bore therethrough and at least one radially opening passageway adjacent said ball.
Claim 5
Dependent Claim
22 words
A coupling as set forth in claim 3 in which said follower includes a plurality of arms adapted to engage said ball.
Claim 6
Dependent Claim
19 words
A coupling as set forth in claim 4 in which said arms have slanting surfaces engageable with said ball.
Claim 7
Dependent Claim
34 words
A coupling as set forth in claim 3 in which said spring is in engagement at its end remote from said ball with an abutment on said first main valve within said transfer bore.
Claim 8
Dependent Claim
20 words
A coupling as set forth in claim 6 in which said abutment is longitudinally adjustable relative to said valve seat.
Claim 9
Dependent Claim
15 words
A coupling as set forth in claim 7 including threaded means for adjusting said abutment.
Claim 10
Dependent Claim
34 words
A coupling as set forth in claim 1 including at least one radial groove on one of said faces, said groove being in communication between said outwardly tapered bore portion and said closed chamber.
References Cited (Backward Citations)
US3127845A
Cited
US3450424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |