US4577894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Axial compression hose coupling
Assignee: MISTI MAID Inc MOUNTAIN VIEW CA A CA CORP
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Filing: 1983-08-01
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Granted: 1986-03-25
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Expires: 2003-08-01
Abstract
Abstract A coupling mechanism for use with flexible hose or tubing in which axial compression forces are applied to the end of the hose or tubing in order to provide the coupling action. The coupling mechanism includes a nipple having a head at the free end thereof surrounded by a collar having an inwardly extending abutment member at the opposite end thereof from the free end of the nipple. The end of the flexible hose or tube is received over the nipple and within the collar with a close fit. Upon axial movement of the collar with respect to the nipple toward the free end thereof, the abutment member on the collar will apply axial compression force to the end of the hose or tubing causing the wall at the end of the hose or tubing to expand into sealing and gripping relation with the nipple and collar. Means for forcing the collar to move axially of the nipple upon rotation of the collar and to selectively maintain the collar at a given point in the axial movement thereof are provided.
Inventors
- 👤 Harold E. Wake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:56
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/10; F16L37/101; F16L33/00; F16L33/22; F16L33/225; F16L33/226
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
353 words
The combination of a coupling mechanism with a flexible hose of resilient material having an end portion of given wall thickness, said coupling mechanism comprising: (a) a body having a nipple of rigid material projecting therefrom and received within said end portion of said hose, said nipple comprising a shank and a head, said shank having a right circular cylindrical exterior diameter substantially equal to the interior diameter of said end portion of said hose, said head having a maximum circular exterior diameter larger than said exterior diameter of said shank; (b) a right circular cylindrical collar of rigid material surrounding said nipple and receiving said end portion of said hose, said collar having an interior diameter larger than said exterior diameter of said head of said nipple by an amount less than said given wall thickness of said end portion of said hose and an axial length shorter than the axial length of said shank of said nipple, said collar having an inwardly extending abutment member at one end thereof, said abutment member extending inwardly into close spaced relation less than said wall thickness of said end portion of said hose from said shank of said nipple, said collar being received on said nipple with said inwardly extending abutment member at the opposite end of said collar from said head of said nipple; and (c) means when rotated urging said collar to move axially of said nipple toward said head thereof, said means being adapted to selectively maintain said collar at a given point in its movement toward said head of said nipple, said inwardly extending abutment member applying axial compressive force to said end portion of said hose compressing said end portion of said hose axially and causing the side wall thickness of said end portion of said hose between said head of said nipple and said abutment member of said collar to expand radially into sealing and gripping contact with the exterior surfaces of said shank and said head of said nipple and with the interior surface of said collar at said given point in said movement of said collar.
Claim 2
Dependent Claim
353 words
The combination of a coupling mechanism with a flexible hose of resilient material having an end portion of given wall thickness, said coupling mechanism comprising: (a) a body having a nipple of rigid material projecting therefrom and received within said end portion of said hose, said nipple comprising a shank and a head, said shank having a right circular cylindrical exterior diameter substantially equal to the interior diameter of said end portion of said hose, said head having a maximum circular exterior diameter larger than said exterior diameter of said shank; (b) a right circular cylindrical collar of rigid material surrounding said nipple and receiving said end portion of said hose, said collar having an interior diameter larger than said exterior diameter of said head of said nipple by an amount less than said given wall thickness of said end portion of said hose and an axial length shorter than the axial length of said shank of said nipple, said collar having an inwardly extending abutment member at one end thereof, said abutment member extending inwardly into close spaced relation less than said wall thickness of said end portion of said hose from said shank of said nipple, said collar being received on said nipple with said inwardly extending abutment member at the opposite end of said collar from said head of said nipple; and (c) means when rotated urging said collar to move axially of said nipple toward said head thereof, said means being adapted to selectively maintain said collar at a given point in its movement toward said head of said nipple, said inwardly extending abutment member applying axial compressive force to said end portion of said hose compressing said end portion of said hose axially and causing the side wall thickness of said end portion of said hose between said head of said nipple and said abutment member of said collar to expand radially into sealing and gripping contact with the exterior surfaces of said shank and said head of said nipple and with the interior surface of said collar at said given point in said movement of said collar.
Claim 3
Dependent Claim
31 words
The combination as claimed in claim 1 wherein said inwardly extending abutment member is a circular flange extending about the periphery of said collar at said one end thereof without interruption.
Claim 4
Dependent Claim
88 words
The combination as claimed in claim 1 wherein said head of said nipple includes a first conical surface tapering from a truncated apex at the free end thereof having a diameter smaller than said interior diameter of said hose to a base providing said maximum circular exterior diameter thereof and a second conical surface tapering from said base to a truncated apex coinciding with said exterior diameter of said shank, said first conical surface having a smaller apex angle than the apex angle of said second conical surface.
Claim 5
Dependent Claim
74 words
The combination as claimed in claim 1 wherein said means for urging said collar to move axially of said nipple toward said head thereof comprises a ratchet cam surface and a ratchet cam tooth, said collar being provided with one of said ratchet cam surface and said ratchet cam tooth and the other of said ratchet cam surface and said ratchet cam tooth being provided at the base of said shank of said nipple.
Claim 6
Dependent Claim
35 words
The combination as claimed in claim 4 wherein said collar is selectively maintained at a given point in the movement thereof by frictional forces inhibiting counter rotation of said collar with respect to said nipple.
Claim 7
Dependent Claim
59 words
The combination as claimed in claim 5 wherein said frictional forces inhibiting counter rotation of said collar with respect to said nipple are provided by engagement of a detent groove on one of said ratchet cam surface and said ratchet cam tooth with a detent ridge on the other of said ratchet cam surface and said ratchet cam tooth.
Claim 8
Dependent Claim
63 words
The combination as claimed in claim 1 wherein said means urging said collar to move axially of said nipple toward said head thereof comprises a pair of diametrically opposed ratchet cam surfaces at the base of said shank of said nipple and a pair of diametrically opposed ratchet cam teeth on said opposite end of said collar from said head of said nipple.
Claim 9
Dependent Claim
51 words
The combination as claimed in claim 7 wherein said pair of ratchet cam surfaces and said pair of ratchet cam teeth are shaped and dimensioned to provide full axial movement of said collar with respect to said nipple upon less than 180° rotation of said collar with respect to said nipple.
Claim 10
Dependent Claim
40 words
The combination as claimed in claim 8 wherein full axial movement of said collar with respect to said nipple toward said head of said nipple is provided by about 90° of rotation of said collar with respect to said nipple.
Claim 11
Dependent Claim
50 words
The combination as claimed in claim 9 wherein said body including said nipple and said ratchet cam surfaces are cast as a first integral unit of nylon material and said collar including said abutment member and said ratchet cam teeth are cast as a second integral unit of nylon material.
References Cited (Backward Citations)
FR542805A
Cited
US1802499A
Cited
FR1361844A
Cited
US3361449A
Cited
DE1525854A1
Cited
DE2546230A1
Cited
US4278279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-03-24 | 1989-09-23 | 1990-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-24 | 1993-09-23 | 1994-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-24 | 1997-09-23 | 1998-03-25 | $7700.00 | Window Closed / Lapsed |