Patent US3658097A successfully refreshed from Google Patents.
US3658097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrugated tubing
Assignee: Advanced Drainage Systems Inc
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Filing: 1970-01-28
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Granted: 1972-04-25
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Expires: 1990-01-28
Abstract
Abstract Flexible corrugated tube has alternating flat annular peaks and flat annular valleys with walls interconnecting the peaks and valleys. Recesses are provided in selected peak portions and each recess has bottom contiguous with valleys on opposite sides of peak in which recess is located. Opening in recess provides communication between interior and exterior or flexible corrugated tube.
Inventors
- 👤 Ronald C Martin
- 👤 Marty E Sixt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:19
CPC Classifications
E; E02; E02B; E02B11/00; E02B11/005
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
79 words
A flexible corrugated tube having alternating substantially flat annular peak portions and substantially flat annular valley portions, walls interconnecting the peak and valley portions, at least one recess in one of the peak portions having a bottom contiguous with the valley portions opposite that peak portion, peak end walls at the recess closing the peak portion in which the recess is located, and an opening in the recess for providing communication between the interior and exterior of the tube.
Claim 2
Dependent Claim
79 words
A flexible corrugated tube having alternating substantially flat annular peak portions and substantially flat annular valley portions, walls interconnecting the peak and valley portions, at least one recess in one of the peak portions having a bottom contiguous with the valley portions opposite that peak portion, peak end walls at the recess closing the peak portion in which the recess is located, and an opening in the recess for providing communication between the interior and exterior of the tube.
Claim 3
Dependent Claim
13 words
A flexible corrugated tube as in claim 1 wherein the opening is circular.
Claim 4
Dependent Claim
23 words
A flexible corrugated tube as in claim 2 wherein the opening extends into the valley portions opposite the peak portion having the recess.
Claim 5
Dependent Claim
31 words
A flexible corrugated tube as in claim 1 wherein one annular peak portion of each group of a predetermined number of adjacent peak portions has a pair of spaced apart recesses.
Claim 6
Dependent Claim
19 words
A flexible corrugated tube as in claim 4 wherein the recesses of each pair are spaced apart 120* .
Claim 7
Dependent Claim
13 words
A flexible corrugated tube as in claim 5 wherein each opening is circular.
Claim 8
Dependent Claim
23 words
A flexible corrugated tube as in claim 6 wherein each opening extends into the valley portions opposite the peak portion having the recesses.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |