US3341351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mist control on air knife coaters
Assignee: Beloit Corp
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Filing: 1963-08-12
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Granted: 1967-09-12
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Expires: 1983-08-12
Abstract
No abstract record available.
Inventors
- 👤 Cecil L Brewer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:10
CPC Classifications
D; D21; D21H; D21H25/00; D21H25/08; D21H25/16; D21H5/00; D21H5/0005; D21H5/006; D21H5/0062; D21H5/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
147 words
A METHOD OF CONTROLLING THE MIST ON AIR KNIFE COATERS COMPRSING THE STEPS OF REMOVING EXCESS COATING AND SMOOTHING THE COATING ON A FRESHLY COATED WEB TRAVELING ABOUT A BACKING ROLL BY IMPINGING HIGH PRESSURE AIR ALONG THE WEB FOR THE WIDTH THEREOF, AS THE WEB PASSES ABOUT THE BACKING ROLL, IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL OF THE WEB AND GENERALLY TANGENTIAL OF THE WEB, SIMULTANEOUSLY IMPINGING LOW PRESSURE AIR ALONG THE WEB FOR THE WIDTH THEREOF AND SPACED IN AN OUTGOING DIRECTION FROM THE HIGH PRESSURE AIR IMPINGING OPERATION AND IN THE SAME DIRECTION AS THE HIGH PRESSURE AIR IMPINGING OPERATION, CONFINING THE MIST PARTICLES BETWEEN THE TWO AIR IMPINGING OPERATIONS AND MIXING THE LOW PRESSURE AIR IMPINGED ON THE WEB WITH THE MIST PARTICLES SO CONFINED, THEN WITHDRAWING THE CONFINED MIST PARTICLES BY SUCTION AND FILTERING THE MIST PARTICLES AS WITHDRAWN.
Claim 2
Independent Claim
147 words
A METHOD OF CONTROLLING THE MIST ON AIR KNIFE COATERS COMPRSING THE STEPS OF REMOVING EXCESS COATING AND SMOOTHING THE COATING ON A FRESHLY COATED WEB TRAVELING ABOUT A BACKING ROLL BY IMPINGING HIGH PRESSURE AIR ALONG THE WEB FOR THE WIDTH THEREOF, AS THE WEB PASSES ABOUT THE BACKING ROLL, IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL OF THE WEB AND GENERALLY TANGENTIAL OF THE WEB, SIMULTANEOUSLY IMPINGING LOW PRESSURE AIR ALONG THE WEB FOR THE WIDTH THEREOF AND SPACED IN AN OUTGOING DIRECTION FROM THE HIGH PRESSURE AIR IMPINGING OPERATION AND IN THE SAME DIRECTION AS THE HIGH PRESSURE AIR IMPINGING OPERATION, CONFINING THE MIST PARTICLES BETWEEN THE TWO AIR IMPINGING OPERATIONS AND MIXING THE LOW PRESSURE AIR IMPINGED ON THE WEB WITH THE MIST PARTICLES SO CONFINED, THEN WITHDRAWING THE CONFINED MIST PARTICLES BY SUCTION AND FILTERING THE MIST PARTICLES AS WITHDRAWN.
Claim 3
Dependent Claim
193 words
IN A PAPER COATING MACHINE FOR COATING A TRAVELING WEB, MEANS COATING THE WEB INCLUDING A COATING BATH PAN AND AN APPLICATOR ROLL IMMERSED IN THE COATING BATH PAN AND OVER WHICH THE WEB TRAVELS, A BACKING ROLL ON THE OUTGOING SIDE OF SAID APPLICATOR ROLL, THE IMPROVEMENTS COMPRISING: A VACUUM CHAMBER OPENING TO THE TRAVELING WEB AS IT PASSES ABOUT SAID BACKING ROLL, AN AIR KNIFE ON THE INCOMING SIDE OF SAID VACUUM CHAMBER AND EXTENDING FOR THE WIDTH OF THE TRAVELING WEB AND DISPOSED TO DIRECT A SMOOTHING BLADE OF AIR ON THE TRAVELING WEB IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL OF THE WEB AND TANGENTIALLY OF THE BACKING ROLL, A SECOND AIR KNIFE ON THE OUTGOING SIDE OF THE VACUUM CHAMBER EXTENDING FOR THE WIDTH OF THE TRAVELING WEB AND DIRECTING A MIST CONFINING BLADE OF AIR ON THE TRAVELING WEB IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL THEREOF AND SUPPLYING CLEAN AIR TO SAID VACUUM CHAMBER, PUMPING MEANS CREATING A VACUUM IN SAID VACUUM CHAMBER, AND FILTERING MEANS BETWEEN SAID VACUUM CHAMBER AND SAID PUMPING MEANS FOR FILTERING THE MIST PARTICLES FROM THE AIR.
Claim 4
Dependent Claim
193 words
IN A PAPER COATING MACHINE FOR COATING A TRAVELING WEB, MEANS COATING THE WEB INCLUDING A COATING BATH PAN AND AN APPLICATOR ROLL IMMERSED IN THE COATING BATH PAN AND OVER WHICH THE WEB TRAVELS, A BACKING ROLL ON THE OUTGOING SIDE OF SAID APPLICATOR ROLL, THE IMPROVEMENTS COMPRISING: A VACUUM CHAMBER OPENING TO THE TRAVELING WEB AS IT PASSES ABOUT SAID BACKING ROLL, AN AIR KNIFE ON THE INCOMING SIDE OF SAID VACUUM CHAMBER AND EXTENDING FOR THE WIDTH OF THE TRAVELING WEB AND DISPOSED TO DIRECT A SMOOTHING BLADE OF AIR ON THE TRAVELING WEB IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL OF THE WEB AND TANGENTIALLY OF THE BACKING ROLL, A SECOND AIR KNIFE ON THE OUTGOING SIDE OF THE VACUUM CHAMBER EXTENDING FOR THE WIDTH OF THE TRAVELING WEB AND DIRECTING A MIST CONFINING BLADE OF AIR ON THE TRAVELING WEB IN A DIRECTION OPPOSITE TO THE DIRECTION OF TRAVEL THEREOF AND SUPPLYING CLEAN AIR TO SAID VACUUM CHAMBER, PUMPING MEANS CREATING A VACUUM IN SAID VACUUM CHAMBER, AND FILTERING MEANS BETWEEN SAID VACUUM CHAMBER AND SAID PUMPING MEANS FOR FILTERING THE MIST PARTICLES FROM THE AIR.
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |