US3797865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adapter
Assignee: Palmer Concrete Products Inc
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Filing: 1971-02-25
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Granted: 1974-03-19
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Expires: 1991-02-25
Abstract
Abstract An adapter for connecting a threaded conduit to a smooth-walled conduit. The adapter includes a first body portion having a righthanded screw thread for securement to a threaded conduit. A second body portion having a pair of diametrically opposed concave land sections and a lefthanded acute angled chamfered screw thread is adapted to be inserted within the interior of the smooth-walled conduit. The acute angled chamfered thread hinders axial separation of the adapter from the smooth-walled conduit.
Inventors
- 👤 W Ballentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:20
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/006; F16L21/00; F16L21/002; Y; Y10; Y10S; Y10S285/00; Y10S285/903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
380 words
An adapter formed from a flexible resilient material for connecting a first conduit to a second conduit, said adapter comprising, in combination: a first body portion which has a substantially tubular shape and which has first means for securing said first body portion to said first conduit; a sEcond body portion integral with the first body portion and which has a substantially tubular shape and which has second means for securing said second body portion to said second conduit; said first body portion being coaxially disposed with said second body portion; means integrally interconnecting said body portions; said first portion having a first diameter; said second body portion having a second diameter different from the diameter of the first body portion; one of said body portions being adapted to be secured to one of said conduits exteriorly thereof; the other of said body portions being adapted to be secured to the other of said conduits interiorly thereof; and a pair of diametrically opposed concave land sections formed within the exterior surface of at least one of said portion portions and which are adapted for facilitating said securing of one of said body portions to one of said conduits; each concave land section extending parallel to the longitudinal axis of said one of said body portions for substantially the entire length thereof; each said concave land section having a base portion and two side portions, each side portion extending radially inward from a longitudinal edge line which lies on the exterior surface of the substantially tubular shaped main portion of said one of said body portions to said base portion whereby the said concave land section extends inwardly from the interior surface of the substantially tubular shaped main portion of said one of said body portions; the means for securing said one of said body portions being disposed between adjacent longitudinal edge lines of the opposed land sections, said land sections facilitating radial compression of said one of said body portions to aid insertion thereof within the interior of said one of said conduits, and wherein the release of pressure from the land sections permits the means for securing said one of said body portions to flex into intimate and secure contact with the interior of said one of said conduits.
Claim 2
Dependent Claim
380 words
An adapter formed from a flexible resilient material for connecting a first conduit to a second conduit, said adapter comprising, in combination: a first body portion which has a substantially tubular shape and which has first means for securing said first body portion to said first conduit; a sEcond body portion integral with the first body portion and which has a substantially tubular shape and which has second means for securing said second body portion to said second conduit; said first body portion being coaxially disposed with said second body portion; means integrally interconnecting said body portions; said first portion having a first diameter; said second body portion having a second diameter different from the diameter of the first body portion; one of said body portions being adapted to be secured to one of said conduits exteriorly thereof; the other of said body portions being adapted to be secured to the other of said conduits interiorly thereof; and a pair of diametrically opposed concave land sections formed within the exterior surface of at least one of said portion portions and which are adapted for facilitating said securing of one of said body portions to one of said conduits; each concave land section extending parallel to the longitudinal axis of said one of said body portions for substantially the entire length thereof; each said concave land section having a base portion and two side portions, each side portion extending radially inward from a longitudinal edge line which lies on the exterior surface of the substantially tubular shaped main portion of said one of said body portions to said base portion whereby the said concave land section extends inwardly from the interior surface of the substantially tubular shaped main portion of said one of said body portions; the means for securing said one of said body portions being disposed between adjacent longitudinal edge lines of the opposed land sections, said land sections facilitating radial compression of said one of said body portions to aid insertion thereof within the interior of said one of said conduits, and wherein the release of pressure from the land sections permits the means for securing said one of said body portions to flex into intimate and secure contact with the interior of said one of said conduits.
Claim 3
Dependent Claim
177 words
An adapter characterized substantially in accordance with claim 1, wherein: said first means for securing said first body portion to said first conduit includes a double right-handed thread for threadingly securing said first body portion over and around the exterior surface of said first conduit; said second means for securing said second body portion to said second conduit includes a double left-handed thread that has an acute angled chamfered thread profile for threadingly securing said second body portion to said second conduit within the interior thereof, said double left-handed thread engaging the interior surface of said second conduit; said double left-handed thread with its acute angled chamfered thread profile being adapted to impede and oppose forces tending to urge a linear translatory separation of said second body portion from said second conduit; said pair of diametrically opposed concave land sections are formed within the exterior surface of said second body portion and are adapted for facilitating said securing of said second body portion to said second conduit; said edge lines are disposed substantially parallel to each other.
Claim 4
Dependent Claim
51 words
An adapter characterized substantially in accordance with claim 1, wherein: each said concave land section lies within the substantially tubular shaped main portion of said second body portion and wherein the two edge lines of each land section form an acute angle having its vertex facing toward said first body portion.
Claim 5
Dependent Claim
44 words
An adapter characterized substantially in accordance with claim 1, wherein: each said concave land section lies within the substantially tubular shaped main portion of said second body portion and wherein the two edge lines of each land section are substantially parallel to each other.
Claim 6
Dependent Claim
87 words
An adapter characterized substantially in accordance with claim 1, wherein: said first means for securing said first body portion to said first conduit includes at least one helical thread disposed around at least a portion of said first body portion in a predetermined direction; and said second means for securing said second body portion to said second conduit includes at least one helical thread disposed around at least a portion of said second body portion in a direction which is opposite to that of said predetermined direction.
Claim 7
Dependent Claim
51 words
An adapter characterized substantially in accordance with claim 1, wherein: said pair of diametrically opposed concave land sections are formed within the exterior surface of said second body portion and facilitate compression of said second body portion to aid inserting said second body portion within the interior of said second conduit
Claim 8
Dependent Claim
198 words
An adapter characterized substantially in accordance with claim 1, wherein: said means connecting said body portions comprises a third body portion disposed between said first and second body portions and which third body portion includes at least one section thereof having the smallest diameter of said adapter; said second body portion is adapted to be inserted within the interior of a smooth-walled second conduit; said second means for securing said second body portion to said second conduit including an acute angled thread commencing adjacent the juncture of said second body portion and said third body portion and terminating a predetermined distance away from the opposite end of said second body portion; said acute angled thread having a profile substantially in the form of a right triangle with one leg of said triangle disposed substantially parallel to the longitudinal axis of said second body portion, the other leg of said triangle being disposed substantially perpendicular to said longitudinal axis of said second body portion and proximal said juncture of said second and third body portions, and the hypotenuse of said triangle sloping downwardly away from said first body portion and towards said longitudinal axis of said second body portion.
Claim 9
Dependent Claim
37 words
An adapter characterized substantially in accordance with claim 4, wherein: said second body portion is adapted to be inserted within the interior of said second conduit; and said second body portion has a constant and fixed diameter.
Claim 10
Dependent Claim
87 words
An adapter characterized substantially in accordance with claim 4, wherein: said first means for securing said first body portion to said first conduit includes at least one helical thread disposed around at least a portion of said first body portion in a predetermined direction; and said second means for securing said second body portion to said second conduit includes at least one helical thread disposed around at least a portion of said second body portion in a direction which is opposite to that of said predetermined direction.
Claim 11
Dependent Claim
51 words
An adapter characterized substantially in accordance with claim 4, wherein: said pair of diametrically opposed concave land sections are formed within the exterior surface of said second body portion and facilitate compression of said second body portion to aid inserting said second body portion within the interior of said second conduit.
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Cited
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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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |