US4292704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sewer cleaning blade stabilizer
Assignee: Individual
•
Filing: 1980-05-02
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Granted: 1981-10-06
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Expires: 2000-05-02
Abstract
Abstract A stabilizer incorporated with a sewer pipe cleaning implement, wherein rotating blades scrape the pipe inner wall; the stabilizer including a spider having four spring-loaded arms that bear against the pipe wall, the spider being along a rubber-sleeved universal shaft assembly, wherein each universal joint thereof includes a block having a pair of transverse, longitudinally spaced-apart pivot pins at right angles to each other, and to which the joint links are pivoted.
Inventors
- 👤 Marvin A. Joanis, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:54
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
73 words
A sewer cleaning blade stabilizer, comprising, in combination, a universal shaft assembly between a blade and chuck assembly, carrying rotating blades for scraping an inner side of a sewer pipeline, and a cable for pushing said blades through said pipeline; said universal shaft assembly comprising a row of links connected together by universal joints, and a stabilizer along said universal shaft assembly carrying spring loaded arms for frictionally engaging said pipeline inner side.
Claim 2
Dependent Claim
73 words
A sewer cleaning blade stabilizer, comprising, in combination, a universal shaft assembly between a blade and chuck assembly, carrying rotating blades for scraping an inner side of a sewer pipeline, and a cable for pushing said blades through said pipeline; said universal shaft assembly comprising a row of links connected together by universal joints, and a stabilizer along said universal shaft assembly carrying spring loaded arms for frictionally engaging said pipeline inner side.
Claim 3
Dependent Claim
18 words
The combination as set forth in claim 1, wherein said universal shaft assembly includes a rubber sleeve therearound.
Claim 4
Dependent Claim
23 words
The combination as set forth in claim 2, wherein each said universal joint includes a block carrying a pair of spaced-apart pivot pins.
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) | 1984-10-05 | 1985-04-06 | 1985-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-05 | 1989-04-06 | 1989-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-05 | 1993-04-06 | 1993-10-06 | $7700.00 | Window Closed / Lapsed |