US3669473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible coupling
Assignee: Advanced Drainage Systems Inc
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Filing: 1970-12-11
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Granted: 1972-06-13
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Expires: 1990-12-11
Abstract
Abstract Flexible coupling for interconnecting tubular lateral line with unbroken tubular main line comprises T-shaped tubular body section having first leg with second leg integrally connected to first leg at angle thereto. Slot in first leg extends full length thereof so that first leg may be expanded open and snapped onto unbroken tubular main line to facilitate interconnection of tubular lateral line with main line when lateral line is secured to free end of second leg of tubular body section.
Inventors
- 👤 Ronald C Martin
- 👤 Marty E Sixt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:06
CPC Classifications
F; F16; F16L; F16L47/00; F16L47/26; F16L37/00; F16L37/008; Y; Y10; Y10S; Y10S285/00; Y10S285/903; Y10S285/921
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
142 words
A flexible coupling for interconnecting a tubular lateral line with an unbroken tubular main line comprising a T-shaped tubular body section having a first leg and a second leg integrally connected to the first leg at an angle thereto, and a slot in the first leg of the tubular body section extending the full length of the first leg whereby the first leg may be expanded open and snapped onto an unbroken tubular main line to facilitate interconnection of a tubular lateral line with a main line when the lateral line is secured to the free end of tHe second leg of the tubular body section, and wherein at least the end portions of the first leg of the tubular body section comprise corrugations formed by alternating annular peaks and valleys constructed and arranged to tightly fit over a corrugated main line.
Claim 2
Dependent Claim
142 words
A flexible coupling for interconnecting a tubular lateral line with an unbroken tubular main line comprising a T-shaped tubular body section having a first leg and a second leg integrally connected to the first leg at an angle thereto, and a slot in the first leg of the tubular body section extending the full length of the first leg whereby the first leg may be expanded open and snapped onto an unbroken tubular main line to facilitate interconnection of a tubular lateral line with a main line when the lateral line is secured to the free end of tHe second leg of the tubular body section, and wherein at least the end portions of the first leg of the tubular body section comprise corrugations formed by alternating annular peaks and valleys constructed and arranged to tightly fit over a corrugated main line.
Claim 3
Dependent Claim
92 words
A flexible coupling as in claim 1 wherein the end portion of the second leg of the tubular body section comprises corrugations formed by alternating annular peaks and valleys constructed and arranged to tightly fit over a corrugated lateral line, and a slit in the free end portion of the second leg of the tubular body section whereby the free end portion of the second leg may be expanded open and snapped onto a lateral line to facilitate connection of a lateral line to the second leg of the tubular body section.
Claim 4
Dependent Claim
35 words
A flexible coupling as in claim 1 wherein the free end portion of the second leg of the tubular body section comprises corrugations substantially similar to corrugations of a lateral line to be connected thereto.
Claim 5
Dependent Claim
30 words
A flexible coupling as in claim 1 wherein the first leg of the tubular body section includes a pair of arcuate flap portions spaced on opposite sides of the slot.
Claim 6
Dependent Claim
146 words
A flexible coupling for interconnecting a tubular lateral line with an unbroken tubular main line comprising a T-shaped tubular body section having a first leg and a second leg integrally connected to the first leg at an angle thereto, and a slot in the first leg of the tubular body section extending the full length of the first leg whereby the first leg may be expanded open and snapped onto an unbroken tubular main line to facilitate interconnection of a tubular lateral line with a main line when the lateral line is secured to the free end of the second leg of the tubular body section, and wherein the tubular body section is straight-walled, and locking lugs formed in the tubular body section at each end thereof projecting into the interior of the tubular body section and arranged to tightly fit over a corrugated main line.
Claim 7
Dependent Claim
146 words
A flexible coupling for interconnecting a tubular lateral line with an unbroken tubular main line comprising a T-shaped tubular body section having a first leg and a second leg integrally connected to the first leg at an angle thereto, and a slot in the first leg of the tubular body section extending the full length of the first leg whereby the first leg may be expanded open and snapped onto an unbroken tubular main line to facilitate interconnection of a tubular lateral line with a main line when the lateral line is secured to the free end of the second leg of the tubular body section, and wherein the tubular body section is straight-walled, and locking lugs formed in the tubular body section at each end thereof projecting into the interior of the tubular body section and arranged to tightly fit over a corrugated main line.
Claim 8
Dependent Claim
49 words
A flexible coupling as in claim 5 wherein each locking lug at the free end portion of the second leg has a guiding surface portion and an abutment surface portion adjacent the guiding surface portion for preventing removal of tubing from the second leg of the tubular body section.
Claim 9
Dependent Claim
48 words
A flexible coupling as in claim 6 wherein the abutment surface portion of each locking lug at the free end portion of the second leg is planar and the guiding surface portion thereof is inclined to cam corrugated tubing into the second leg of the tubular body section.
Claim 10
Dependent Claim
41 words
A flexible coupling as in claim 6 wherein the planar abutment surface portion of each locking lug at the free end portion of the second leg is normal to the longitudinal axis of the second leg of the tubular body section.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |