US3585673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long retracting soot blower with locking gear drive
Assignee: Babcock and Wilcox Co
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Filing: 1968-12-03
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Granted: 1971-06-22
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Expires: 1988-12-03
Abstract
Abstract A LONG TRAVEL SOOT BLOWER HAS A UNITARY MOTOR-GEARBOXCARRIAGE ASSEMBLY FOR PROJECTING AND RETRACTING THE LANCE TUBE, THE GEARING BEING SO ARRANGED THAT THE LANCE TUBE CANNOT BE MOVED BY THE PRESSURE OF THE BLOWING MEDIUM. THE CARRIAGE, LANCE TUBE AND FEED TUBE ARE SUPPORTED TO PROVIDE SAG-OFFSETTING VERTICAL DISPLACEMENT OF THE CARRIAGE AND LANCE AND TO PROVIDE ROLLER SUPPORT WITH MINIMUM FRICTION.
Inventors
- 👤 John E Nelson
- 👤 John R Saltz
- 👤 Robert E Chappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:25
CPC Classifications
F; F28; F28G; F28G15/00; F28G15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |