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Patent US1653108A successfully refreshed from Google Patents.
US3570543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couplings for pressure medium conduits
Assignee: Individual
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Filing: 1968-11-14
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Granted: 1971-03-16
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Expires: 1988-11-14
Abstract
Abstract The coupling has a pair of tubular-coupling members connectable to conduits for pressure mediums with each coupling member having a valve body therein which, when the coupling members are disconnected, is in a position to close its couplings member and which, upon connection of the coupling members, is moved to open its coupling member and to open a valve provided in each valve body to release any pressure medium remaining in its conduit so that the coupling members may be easily connected.
Inventors
- 👤 Bror Thure Fridolf Ekman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:48
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/30; F16L37/32; F16L37/22; F16L37/23; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
A coupling comprising a pair of tubular coupling members capable of mating, a pair of guide sleeves each fixedly mounted in one of said coupling members, a pair of valve bodies each having a longitudinal bore and a sleeve-shaped end portion slideably positioned in one of said guide sleeves, a pair of springs each positioned in one of said valve body bores and abutting the corresponding guide sleeve, each valve body bore having a valve seat, each of said coupling members having an internal valve seat positioned to receive and be closed by one of said valve bodies when said coupling members are disconnected, a pair of balls each positioned in one of said valve body bores with the corresponding spring abutting said ball tending to hold said ball against and closing its corresponding valve body bore valve seat and to move its valve body from its guide sleeve towards and closing its coupling member internal valve seat, said valve bodies being positioned to abut with their bores in communication when said coupling members are connected whereupon said valve bodies are moved from their coupling member internal valve seat and means carried by said valve bodies capable of moving said balls from their valve body bore valve seat when said valve bodies are abutting one another.
Claim 2
Dependent Claim
216 words
A coupling comprising a pair of tubular coupling members capable of mating, a pair of guide sleeves each fixedly mounted in one of said coupling members, a pair of valve bodies each having a longitudinal bore and a sleeve-shaped end portion slideably positioned in one of said guide sleeves, a pair of springs each positioned in one of said valve body bores and abutting the corresponding guide sleeve, each valve body bore having a valve seat, each of said coupling members having an internal valve seat positioned to receive and be closed by one of said valve bodies when said coupling members are disconnected, a pair of balls each positioned in one of said valve body bores with the corresponding spring abutting said ball tending to hold said ball against and closing its corresponding valve body bore valve seat and to move its valve body from its guide sleeve towards and closing its coupling member internal valve seat, said valve bodies being positioned to abut with their bores in communication when said coupling members are connected whereupon said valve bodies are moved from their coupling member internal valve seat and means carried by said valve bodies capable of moving said balls from their valve body bore valve seat when said valve bodies are abutting one another.
Claim 3
Dependent Claim
37 words
A coupling as claimed in claim 1 wherein said means consists of a pair of pins each slideably positioned in one of said valve body bores, abutting the ball therein and normally extending from its valve body.
Claim 4
Dependent Claim
37 words
A coupling as claimed in claim 2 wherein each valve body bore has a shoulder and each pin has a lateral extension positioned for engaging the shoulder of its bore for limiting the movement of said pin.
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) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |