Patent US5257620A successfully refreshed from Google Patents.
US3602531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing coupler
Assignee: Adjusta Post Manufacturing Co Inc
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Filing: 1969-10-20
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Granted: 1971-08-31
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Expires: 1989-10-20
Abstract
Abstract A unitary cast tubing coupler formed of a pair of tubular end sections, one of greater diameter than the other, and a conically shaped connector section extending between and connecting the end sections. Each of the end sections has a plurality of widely circumferentially spaced, axially extending narrow ribs on the outer surface thereof tapering radially inwardly at an angle of about 1* to 3* towards the axially outer ends of the end sections whereby a tube can be forced into engagement with each end section to form a coupler therebetween. The internal diameters of the end sections increase as they approach the exposed end of the section.
Inventors
- 👤 Leon R Patry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:40
CPC Classifications
F; F16; F16L; F16L21/00; F16L21/002
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
158 words
A tubing coupler comprising a pair of tubular end sections and an annular connector section extending between and connecting said end sections, each of said end sections including a plurality of widely circumferentially spaced, axially extending ribs on the outer surface thereof, all of said ribs tapering over their entire length radially inwardly towards the axially outer ends thereof and having an inclination of from about 1* to about 3* to the axis of the end sections, said ribs blending into the periphery of the end section on which they are positioned adjacent the terminal outer end thereof, said coupler being a unitary casting, the bores of said end sections enlarging towards the outer ends thereof, both the outer and inner walls of said end sections taper towards each other at small acute angles in a direction towards the end of the tubing coupler, and between about 6 to 10 ribs are provided on each of said sections.
Claim 2
Dependent Claim
158 words
A tubing coupler comprising a pair of tubular end sections and an annular connector section extending between and connecting said end sections, each of said end sections including a plurality of widely circumferentially spaced, axially extending ribs on the outer surface thereof, all of said ribs tapering over their entire length radially inwardly towards the axially outer ends thereof and having an inclination of from about 1* to about 3* to the axis of the end sections, said ribs blending into the periphery of the end section on which they are positioned adjacent the terminal outer end thereof, said coupler being a unitary casting, the bores of said end sections enlarging towards the outer ends thereof, both the outer and inner walls of said end sections taper towards each other at small acute angles in a direction towards the end of the tubing coupler, and between about 6 to 10 ribs are provided on each of said sections.
Claim 3
Dependent Claim
35 words
A tubing coupler as in claim 1 and where axially extending ribs are formed on the inner wall of one of said end section to facilitate ejection of the tubing coupler from its casting mold.
Claim 4
Dependent Claim
34 words
A tubing coupler as in claim 1 where one of said tubular end sections is of greater diameter than the other, and a conical shaped connector section extends between and connects said end section.
Claim 5
Dependent Claim
128 words
In combination, a pair of tubes of different diameters and a tubing coupler comprising a pair of tubular end sections, one of greater diameter than the other, and a conical shaped connector section extending between and connecting said end sections, each of said end sections including a plurality of widely circumferentially spaced axially extending ribs on the outer surface thereof, all of said ribs tapering over their entire length radially inwardly towards the axially outer ends thereof, said tubes having inner diameters corresponding to the outer diameters of said end section in the nonribbed areas thereOf, said coupler having a radially outwardly extending should at each end of said connector section, and said tubes having respective ends thereof tightly engaging said end sections and abutting against said shoulders.
Claim 6
Dependent Claim
128 words
In combination, a pair of tubes of different diameters and a tubing coupler comprising a pair of tubular end sections, one of greater diameter than the other, and a conical shaped connector section extending between and connecting said end sections, each of said end sections including a plurality of widely circumferentially spaced axially extending ribs on the outer surface thereof, all of said ribs tapering over their entire length radially inwardly towards the axially outer ends thereof, said tubes having inner diameters corresponding to the outer diameters of said end section in the nonribbed areas thereOf, said coupler having a radially outwardly extending should at each end of said connector section, and said tubes having respective ends thereof tightly engaging said end sections and abutting against said shoulders.
Claim 7
Dependent Claim
50 words
A tubing coupler as in claim 4 where said coupler is a unitary casting, said ribs have an inclination of from about 1* to about 3* to the axis of the coupler, and said ribs blends into the periphery of a said end section adjacent the axially outer end thereof.
Claim 8
Dependent Claim
65 words
A tubing coupler as in claim 4 where said coupler is a unitary casting, said ribs have an inclination of from about 1* to about 3* to the axis of the coupler, said ribs blend into the periphery of a said end section adjacent the axially outer end thereof, and where the internal diameters of said end section gradually increase towards the exposed ends thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |