US2976191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of killing roots adjacent sewer line joints
Assignee: Individual
•
Filing: 1958-01-09
•
Granted: 1961-03-21
•
Expires: 1978-01-09
Abstract
No abstract record available.
Inventors
- 👤 James C Weston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:42
CPC Classifications
B; B08; B08B; B08B9/00; B08B9/02; B08B9/027; B08B9/032; B08B9/0321; B08B9/0322; E; E03; E03F; E03F9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A METHOD OF DESTROYING AND INHIBITING ROOT GROWTH AROUND THE PERIPHERAL EXTERIOR AND INTERIOR OF SEWER LINE JOINTS COMPRISING BLOCKING OFF A SEGMENT OF SEWER LINE INCLUDING THE JOINTS THROUGH WHICH THE ROOTS HAVE INTRUDED INTO THE SEWER LINE BY INSERTING AN EXPANSIBLE BLOCKING MEANS AT BOTH ENDS OF THE AREA TO BE BLOCKED AND EXPANDING THE BLOCKING MEANS, SUPPLYING A ROOT KILLING CHEMICAL UNDER PRESSURE INTO THE BLOCKED OFF SEWER LINE SEGMENT, AND FORCING UNDER PRESSURE A QUANTITY OF THE CHEMICAL THROUGH THE SEWER LINE JOINTS INTO THE SOIL AREA ADJACENT THERETO.
Claim 2
Independent Claim
93 words
A METHOD OF DESTROYING AND INHIBITING ROOT GROWTH AROUND THE PERIPHERAL EXTERIOR AND INTERIOR OF SEWER LINE JOINTS COMPRISING BLOCKING OFF A SEGMENT OF SEWER LINE INCLUDING THE JOINTS THROUGH WHICH THE ROOTS HAVE INTRUDED INTO THE SEWER LINE BY INSERTING AN EXPANSIBLE BLOCKING MEANS AT BOTH ENDS OF THE AREA TO BE BLOCKED AND EXPANDING THE BLOCKING MEANS, SUPPLYING A ROOT KILLING CHEMICAL UNDER PRESSURE INTO THE BLOCKED OFF SEWER LINE SEGMENT, AND FORCING UNDER PRESSURE A QUANTITY OF THE CHEMICAL THROUGH THE SEWER LINE JOINTS INTO THE SOIL AREA ADJACENT THERETO.
References Cited (Backward Citations)
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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) | 1964-03-20 | 1964-09-19 | 1965-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-20 | 1968-09-19 | 1969-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-20 | 1972-09-19 | 1973-03-21 | $7700.00 | Window Closed / Lapsed |