Patent US3347740A successfully refreshed from Google Patents.
US3347740A
Expired / Lapsed
US
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Method and apparatus for purging travelling felts
Assignee: Rice Barton Corp
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Filing: 1963-10-14
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Granted: 1967-10-17
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Expires: 1983-10-14
Abstract
No abstract record available.
Inventors
- 👤 Gleb I Goumeniouk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:57
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/32; D21F7/00; D21F7/08; D21F7/12; Y; Y10; Y10S; Y10S162/00; Y10S162/07
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
99 words
THE METHOD OF REMOVING FOREIGN SUBSTANCE, SUCH AS WATER AND PARTICLES, FROM DEWATERING AND TRANSPORTING FELTS USED IN PAPER MAKING AND OTHER MACHINES, WHICH COMPRISES MOVING THE FELT AROUND A CURVED SURFACE OF SUFFICIENTLY SMALL RADIUS AT THE OPERATING SPEED OF THE MACHINE TO FLING THE FOREIGN SUBSTANCE FROM THE FELT UNDER THE ACTION OF CENTRIFUGAL FORCE, AND SIMULTANEOUSLY SUPPLYING AIR TO THE UNDERSIDE OF THE FELT TO ASSIST THE FLINGING OF THE FOREIGN SUBSTANCE BY PREVENTING THE CREATION OF A LOW PRESSURE IN THE FELT THEREBY REDUCING THE SUCTION ACTION RESULTING FROM THE REMOVAL OF THE FOREIGN SUBSTANCE.
Claim 2
Independent Claim
99 words
THE METHOD OF REMOVING FOREIGN SUBSTANCE, SUCH AS WATER AND PARTICLES, FROM DEWATERING AND TRANSPORTING FELTS USED IN PAPER MAKING AND OTHER MACHINES, WHICH COMPRISES MOVING THE FELT AROUND A CURVED SURFACE OF SUFFICIENTLY SMALL RADIUS AT THE OPERATING SPEED OF THE MACHINE TO FLING THE FOREIGN SUBSTANCE FROM THE FELT UNDER THE ACTION OF CENTRIFUGAL FORCE, AND SIMULTANEOUSLY SUPPLYING AIR TO THE UNDERSIDE OF THE FELT TO ASSIST THE FLINGING OF THE FOREIGN SUBSTANCE BY PREVENTING THE CREATION OF A LOW PRESSURE IN THE FELT THEREBY REDUCING THE SUCTION ACTION RESULTING FROM THE REMOVAL OF THE FOREIGN SUBSTANCE.
Claim 3
Dependent Claim
54 words
APPARATUS FOR REMOVING FOREIGN SUBSTANCES, SUCH AS WATER AND PARTICLES, FROM DEWATERING AND TRANSPORTING FELT USED IN PAPER MAKING AND OTHER MACHINES, COMPRISING AT LEAST ONE MEMBER PROVIDING A CURVED SURFACE OF SMALL RADIUS, MEANS FOR MOVING THE FELT ANGULARLY OVER AT LEAST A PORTION OF SAID SURFACE, THE RADIUS OF THE CURVED SUR-
Claim 4
Dependent Claim
54 words
APPARATUS FOR REMOVING FOREIGN SUBSTANCES, SUCH AS WATER AND PARTICLES, FROM DEWATERING AND TRANSPORTING FELT USED IN PAPER MAKING AND OTHER MACHINES, COMPRISING AT LEAST ONE MEMBER PROVIDING A CURVED SURFACE OF SMALL RADIUS, MEANS FOR MOVING THE FELT ANGULARLY OVER AT LEAST A PORTION OF SAID SURFACE, THE RADIUS OF THE CURVED SUR-
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |