Patent US2695255A successfully refreshed from Google Patents.
US2695255A
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Method of expanding an elastic liner against the inner surface of a pipe
Assignee: Individual
•
Filing: 1950-10-25
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Granted: 1954-11-23
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Expires: 1970-10-25
Abstract
No abstract record available.
Inventors
- 👤 Douglas W Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:01
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/24; B29C49/26; B29C63/00; B29C63/26; B29C63/34; B29C63/341; F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1009; F16L58/1027; Y; Y10; Y10S; Y10S264/00; Y10S264/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
THE METHOD OF EXPANDING A CEMENT COATED ELASTIC LINER TUBE AGAINST A CEMENT COATED INNER SURFACE OF A METAL PIPE WITHIN WHICH THE LINER TUBE EXTENDS LENGTHWISE, WHICH COMPRISES PROGESSIVELY MOVING THROUGH THE ELASTIC LINER TUBE AN AIR CONTROL TOOL OF SLIGHTLY LESS DIAMETER THAN THE LINER TUBE AND CONTINUOUSLY PASSING AIR UNDER PRESSURE BETWEEN THE AIR CONTROL TOOL AND THE LINER TUBE TO PROGESSIVELY EXPAND THE ELASTIC LINER TUBE AGAINST THE PIPE AS THE AIR CONTROL TOOL IS MOVED LONGITUDINALLY THROUGH THE ELASTIC LINER TUBE.
Claim 2
Independent Claim
86 words
THE METHOD OF EXPANDING A CEMENT COATED ELASTIC LINER TUBE AGAINST A CEMENT COATED INNER SURFACE OF A METAL PIPE WITHIN WHICH THE LINER TUBE EXTENDS LENGTHWISE, WHICH COMPRISES PROGESSIVELY MOVING THROUGH THE ELASTIC LINER TUBE AN AIR CONTROL TOOL OF SLIGHTLY LESS DIAMETER THAN THE LINER TUBE AND CONTINUOUSLY PASSING AIR UNDER PRESSURE BETWEEN THE AIR CONTROL TOOL AND THE LINER TUBE TO PROGESSIVELY EXPAND THE ELASTIC LINER TUBE AGAINST THE PIPE AS THE AIR CONTROL TOOL IS MOVED LONGITUDINALLY THROUGH THE ELASTIC LINER TUBE.
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) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |