US4366945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose coupling with double lock
Assignee: ABNOX AG
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Filing: 1979-12-11
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Granted: 1983-01-04
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Expires: 1999-12-11
Abstract
Abstract The pipe-coupling comprises a socket member adapted to receive a nipple for connecting a compressed air hose to a fixed supply conduit, for example. The nipple can be inserted manually without any additional actuation of the socket member, since locking is effected by spring-loaded locking members which engage in a circumferential groove in the nipple. When the nipple is fully engaged, a valve arranged in the socket member is open, counter to the pressure of a spring. Release of the coupling is effected by two sliding movements, in opposite directions, of a sliding sleeve enclosing the socket member, the first sliding movement releasing the spring-loaded locking members and the second sliding movement releasing further locking members. Between the two unlocking stages, the nipple executes a short axial movement which results in closure of the valve and release of the compressed air present in the hose, so that after the further locking means have been released, the hose with nipple can be removed from the socket member without any danger. A resilient latch member prevents accidental movement of the sliding sleeve back and forth.
Inventors
- 👤 Arnold Blauenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:17
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/28; F16L37/38; F16L37/40; F16L37/22; Y; Y10; Y10S; Y10S285/00; Y10S285/924
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
273 words
A pipe-coupling comprising: a socket member adapted to receive a nipple having a circumferential groove; a valve arranged in the socket-member, the socket-member having an external sliding sleeve which encloses a hollow cylindrical coupling body having a cage and an inclined channel; at least one spring and spring-loaded first locking element guided within the inclined channel of the coupling body, which first locking element engages in a locked position in the circumferential groove of the nipple and is movable out of said locked position against the action of said spring by axial movement of said external sliding sleeve, into an unlocked position, at least one second locking element which is arranged in the cage of the coupling body and which engages in the circumferential groove of the nipple in a locked position, and which is in contact with the sleeve when the sleeve is in an axial position which corresponds to the unlocked position of the first locking element, the locked positions of the first and second locking elements being at a distance from one another in an axial direction of the socket-member, so that a nipple inserted into the socket-member has two spaced locked positions relative to the socket-member, the valve being closed when the second locking element is engaged in its locked position; the pipe-coupling further comprising a resilient latch-element movably mounted to the socket-member, which in a latched position thereof engages the sliding sleeve in a displaced position of the sleeve in which the second locking element is in its locked position and is located for engagement in the circumferential groove of the nipple which is inserted into the socket-member.
Claim 2
Dependent Claim
273 words
A pipe-coupling comprising: a socket member adapted to receive a nipple having a circumferential groove; a valve arranged in the socket-member, the socket-member having an external sliding sleeve which encloses a hollow cylindrical coupling body having a cage and an inclined channel; at least one spring and spring-loaded first locking element guided within the inclined channel of the coupling body, which first locking element engages in a locked position in the circumferential groove of the nipple and is movable out of said locked position against the action of said spring by axial movement of said external sliding sleeve, into an unlocked position, at least one second locking element which is arranged in the cage of the coupling body and which engages in the circumferential groove of the nipple in a locked position, and which is in contact with the sleeve when the sleeve is in an axial position which corresponds to the unlocked position of the first locking element, the locked positions of the first and second locking elements being at a distance from one another in an axial direction of the socket-member, so that a nipple inserted into the socket-member has two spaced locked positions relative to the socket-member, the valve being closed when the second locking element is engaged in its locked position; the pipe-coupling further comprising a resilient latch-element movably mounted to the socket-member, which in a latched position thereof engages the sliding sleeve in a displaced position of the sleeve in which the second locking element is in its locked position and is located for engagement in the circumferential groove of the nipple which is inserted into the socket-member.
Claim 3
Dependent Claim
62 words
A pipe-coupling according to claim 1, wherein the resilient latch-element serves as a stop for retaining the sleeve in all its positions on the socket-member, the sleeve being in a stop-position when the at least one first spring-loaded locking element is located in a radially inward position relatively to the socket-member which corresponds to the locked position thereof and of the pipe-coupling.
Claim 4
Dependent Claim
29 words
A pipe-coupling according to claim 1, wherein the latch-element comprises a radially resilient ring formed of a steel wire having a small gap therein at one circumferential location thereof.
Claim 5
Dependent Claim
90 words
A pipe-coupling according to claim 1, wherein two of said spring-loaded first locking elements are provided which are cylindrical and which are each guided in a separate inclined channel of said coupling body, each channel formed by a slot extending at an angle to a longitudinal axis of the socket-member, ends of said first locking elements being held between the spring which loads the first locking element and a part of the external sleeve and wherein the nipple has a conical surface which forms part of the circumferential groove thereof.
Claim 6
Dependent Claim
60 words
A pipe-coupling according to claim 4, wherein said at least one second locking element is ball-shaped and is arranged in relation to the circumferential direction of the hollow cylindrical coupling body between said two spring-loaded first locking elements, the cage of the coupling body receiving said second locking element being longer than a diameter of said ball-shaped second locking element.
Claim 7
Dependent Claim
38 words
A pipe-coupling according to claim 5, including biasing means engaged with said at least one second ball-shaped locking element having a compression spring biasing said ball-shaped locking element in the direction toward an axial end of said cage.
Claim 8
Dependent Claim
63 words
A pipe-coupling according to claim 6, wherein said biasing means comprise the coupling body having a bore provided which communicates with the cage and extends in the axial direction of the socket-member, in which bore the compression spring in the form of a coil spring is arranged, an axially displaceable cylindrical pin arranged between the coil spring and the second ball-shaped locking element.
Claim 9
Dependent Claim
66 words
A pipe-coupling according to claim 7, wherein the point of contact between said cylindrical pin and the second ball-shaped locking element is located radially outwardly relative to a midpoint of the ball-shaped locking element in the radial direction relatively to the socket-member, so that by virtue of the biasing of the second locking element, an inwardly directed radial force-component is exerted on the ball-shaped locking element.
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) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |