Patent US3817561A successfully refreshed from Google Patents.
US3817561A
Expired / Lapsed
US
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Pipe joint connector
Assignee: Instruments and Movements Ltd
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Filing: 1971-12-08
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Granted: 1974-06-18
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Expires: 1991-12-08
Abstract
Abstract A pipe joint, especially for pipes of soft or resilient, e.g. plastics, material and in the sizes used in fluidics systems, comprises a connector body having an orifice sized to receive a pipe to be connected thereto and, internally, two or more sharpedged ribs one of which is interrupted to provide a ring of teeth, the entry face of each rib being ramped and extending from a diameter, at the rib edge, less than the nominal external diameter of the pipe to a diameter greater than the nominal external diameter of the pipe. The body may have two or more pairs or sets of ribs sized to suit pipes of respectively different nominal external diameter.
Inventors
- 👤 F Kay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/008; F16L37/08; F16L37/084; F16L47/00; F16L47/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A pipe joint connector for connecting to a pipe made of a flexible resilient material, comprising: a. a connector body having an orifice with an entry sized to receive a pipe to be connected thereby b. at least two axially-spaced sharp-edged circumferential ribs in said orifice each defining an aperture less than the nominal external diameter of said pipe, the ribs being hard relative to said pipe c. a ramped divergent surface on the side of each rib facing said orifice entry, said divergent surface extending to a diameter greater than said nominal external diameter of the pipe d. at least one of said ribs being interrupted circumferentially leaving projections which discontinuously deform the circumference of the flexible resilient pipe inserted into said orifice.
Claim 2
Dependent Claim
124 words
A pipe joint connector for connecting to a pipe made of a flexible resilient material, comprising: a. a connector body having an orifice with an entry sized to receive a pipe to be connected thereby b. at least two axially-spaced sharp-edged circumferential ribs in said orifice each defining an aperture less than the nominal external diameter of said pipe, the ribs being hard relative to said pipe c. a ramped divergent surface on the side of each rib facing said orifice entry, said divergent surface extending to a diameter greater than said nominal external diameter of the pipe d. at least one of said ribs being interrupted circumferentially leaving projections which discontinuously deform the circumference of the flexible resilient pipe inserted into said orifice.
Claim 3
Dependent Claim
24 words
The pipe joint connector of claim 1, wherein said interrupted rib is the rib furthest from the entry to the said connector body orifice.
Claim 4
Dependent Claim
27 words
The pipe joint connector of claim 1, wherein said interrupted rib defines an aperture having a smaller diameter than the aperture defined by the other said rib.
Claim 5
Dependent Claim
27 words
The pipe joint connector of claim 1, wherein the said interrupted rib is divided into teeth each subtending an angle in the range 10-20* at the axis.
Claim 6
Dependent Claim
46 words
The pipe joint connector of claim 1, including a plurality of continuous circumferential ribs within said orifice in addition to said interrupted rib, the successive ribs spaced from the orifice entry Defining apertures of progressively decreasing diameter and the interrupted rib being furthest from said entry.
Claim 7
Dependent Claim
42 words
The pipe joint connector of claim 1, including two sets of said ribs within said orifice, each said set including an interrupted rib, said sets of ribs being respectively adapted for optimum securement and sealing engagement with pipes of two external diameters.
Claim 8
Dependent Claim
34 words
The pipe joint connector of claim 6, wherein a recess of diameter greater than the nominal external diameter of the larger of said pipes is formed in said orifice between said sets of ribs.
References Cited (Backward Citations)
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Cited
CA705031A
Cited
US2021745A
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US2474880A
Cited
US3679241A
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US3637240A
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US3695643A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |