Patent US5805685A successfully refreshed from Google Patents.
Patent US3296841A successfully refreshed from Google Patents.
US3296841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treatment of webs or yarns
Assignee: Heberlein Patent Corp
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Filing: 1964-09-03
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Granted: 1967-01-10
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Expires: 1984-09-03
Abstract
No abstract record available.
Inventors
- 👤 Fischer Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:07
CPC Classifications
D; D06; D06B; D06B5/00; D06B5/12; D06B23/00; D06B23/02; D06B2700/00; D06B2700/35
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
APPARATUS OF THE CLASS DESCRIBED COMPRISING, A DRUM FORMED WITH A SERIES OF PERFORATIONS IN AN INTERMEDIATE ZONE OF ITS CYLINDRICAL SURFACE, MEANS MOUNTING SAID DRUM FOR ROTATION ABOUT ITS LONGITUDINAL AZIS, MEANS DIVIDING SAID ZONE OF SAID DRUM INTO A PLURALITY OF CYLINDRICAL CHAMBERS POSITIONED LONGITUDINALLY WITHIN SAID DRUM, AND CONDUIT MEANS ADMITTING FLUID UNDER PRESSURE INTO ONE OF SAID CHAMBERS, MEANS COMMUNICATING WITH SAID CONDUIT MEANS AND THE OTHER OF SAID CYLINDRICAL CHAMBERS, AND VALVE MEANS CONTROLLING FLUID FLOW THROUGH SAID LAST MENTIONED MEANS SELECTIVELY TO PERMIT FLUID TO ENTER SAID OTHER CHAMBERS ACCORDING TO THE WIDTH OF MATERIAL TO BE TREATED.
Claim 2
Dependent Claim
104 words
APPARATUS OF THE CLASS DESCRIBED COMPRISING, A DRUM FORMED WITH A SERIES OF PERFORATIONS IN AN INTERMEDIATE ZONE OF ITS CYLINDRICAL SURFACE, MEANS MOUNTING SAID DRUM FOR ROTATION ABOUT ITS LONGITUDINAL AZIS, MEANS DIVIDING SAID ZONE OF SAID DRUM INTO A PLURALITY OF CYLINDRICAL CHAMBERS POSITIONED LONGITUDINALLY WITHIN SAID DRUM, AND CONDUIT MEANS ADMITTING FLUID UNDER PRESSURE INTO ONE OF SAID CHAMBERS, MEANS COMMUNICATING WITH SAID CONDUIT MEANS AND THE OTHER OF SAID CYLINDRICAL CHAMBERS, AND VALVE MEANS CONTROLLING FLUID FLOW THROUGH SAID LAST MENTIONED MEANS SELECTIVELY TO PERMIT FLUID TO ENTER SAID OTHER CHAMBERS ACCORDING TO THE WIDTH OF MATERIAL TO BE TREATED.
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |