Patent US3242518A successfully refreshed from Google Patents.
US3242518A
Expired / Lapsed
US
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Apparatus for feeding jointed sewer cleaning tool driving rod
Assignee: Flexible Sewer Tool Corp
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Filing: 1965-03-29
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Granted: 1966-03-29
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Expires: 1985-03-29
Abstract
No abstract record available.
Inventors
- 👤 Charles J Prange
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:27
CPC Classifications
E; E03; E03F; E03F9/00; E03F9/002; E03F9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
APPARATUS FOR FEEDING SEWER TOOL DRIVE ROD OF THE SECTIONAL TYPE COMPRISING ROD SECTIONS JOINED BY LARGER DIAMETER COUPLINGS, SAID APPARATUS COMPRISING: A PAIR OF PERIPHERALLY-OPPOSED FEED ROLLS HAVING MATCHING SEGMENTAL-CIRCULAR PERIPHERAL JAWS ARRANGED TO APPLY ROLLING FEED TO THE ROD SECTIONS, AND HAVING SEGMENTAL PERIPHERAL GAPS BETWEEN THE CIRCUMFERENTIAL EXTREMITIES OF SAID JAWS, SAID FEED ROLLS HAVING A CIRCUMFERENTIAL EQUIVALENT TO AN EVEN FRACTION OF THE SECTIONAL LENGTH OF SAID DRIVE ROD BETWEEN COUPLING CENTERS, WHEREBY SUCCEEDING COUPLINGS WILL REGISTER WITH AND BE RECEIVED BY SAID GAPS AS THE ROD IS FED BETWEEN SAID ROLLS; AND MEANS FOR DRIVING SAID ROLLS.
Claim 2
Dependent Claim
102 words
APPARATUS FOR FEEDING SEWER TOOL DRIVE ROD OF THE SECTIONAL TYPE COMPRISING ROD SECTIONS JOINED BY LARGER DIAMETER COUPLINGS, SAID APPARATUS COMPRISING: A PAIR OF PERIPHERALLY-OPPOSED FEED ROLLS HAVING MATCHING SEGMENTAL-CIRCULAR PERIPHERAL JAWS ARRANGED TO APPLY ROLLING FEED TO THE ROD SECTIONS, AND HAVING SEGMENTAL PERIPHERAL GAPS BETWEEN THE CIRCUMFERENTIAL EXTREMITIES OF SAID JAWS, SAID FEED ROLLS HAVING A CIRCUMFERENTIAL EQUIVALENT TO AN EVEN FRACTION OF THE SECTIONAL LENGTH OF SAID DRIVE ROD BETWEEN COUPLING CENTERS, WHEREBY SUCCEEDING COUPLINGS WILL REGISTER WITH AND BE RECEIVED BY SAID GAPS AS THE ROD IS FED BETWEEN SAID ROLLS; AND MEANS FOR DRIVING SAID ROLLS.
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) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |