Patent US5024004A successfully refreshed from Google Patents.
US5024004A
Expired / Lapsed
US
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Radio frequency air float bar
Assignee: Durr Megtec LLC
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Filing: 1990-03-07
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Granted: 1991-06-18
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Expires: 2010-03-07
Abstract
Abstract A radio frequency air float bar for use in floating and drying a continuous planar web of a material in a dryer. Radio frequency energy in an air bar accelerates drying, or evaporation of solvents, or curing of planar web material passing in proximity to the radio frequency air float bar either by radio frequency energy, or in combination with Coanda air flow. The radio frequency energy is capacitively coupled across the entire width of the web to ensure maximum energy transfer and even distribution.
Inventors
- 👤 Hugh D. Jaeger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:57
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/101; F26B13/104
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
92 words
An air bar for supporting and curing a traveling web of material having a width comprising: a. means for providing a pressurized gas; b. means coupled to said providing means to direct said pressurized gas into contact with said traveling web of material; c. source of radio frequency energy; d. means responsibly coupled to said source of radio frequency energy for uniformly coupling said radio frequency energy across said width of said traveling web of material; and, e. means for capacitively coupling said radio frequency energy to said traveling web of material.
Claim 2
Dependent Claim
92 words
An air bar for supporting and curing a traveling web of material having a width comprising: a. means for providing a pressurized gas; b. means coupled to said providing means to direct said pressurized gas into contact with said traveling web of material; c. source of radio frequency energy; d. means responsibly coupled to said source of radio frequency energy for uniformly coupling said radio frequency energy across said width of said traveling web of material; and, e. means for capacitively coupling said radio frequency energy to said traveling web of material.
Claim 3
Dependent Claim
22 words
An air bar according to claim 1 wherein said capacitively coupling means further comprises a conductive plate attached to said directing means.
Claim 4
Dependent Claim
18 words
An air bag according to claim 2 wherein conductive plate extends the entire width of said directing means.
Claim 5
Dependent Claim
22 words
An air bar according to claim 3 wherein said source of radio frequency energy supplies radio frequency energy at about 27 megahertz.
Claim 6
Independent Claim
59 words
A method of curing a traveling web of material comprising: a. directing a pressurized gas at said traveling web of material; b. developing a radio frequency signal; c. coupling said radio frequency signal across the width of said traveling web of material; and, d. capacitively coupling said radio frequency signal across the width of said traveling web of material.
Claim 7
Independent Claim
59 words
A method of curing a traveling web of material comprising: a. directing a pressurized gas at said traveling web of material; b. developing a radio frequency signal; c. coupling said radio frequency signal across the width of said traveling web of material; and, d. capacitively coupling said radio frequency signal across the width of said traveling web of material.
Claim 8
Dependent Claim
21 words
A method according to claim 5 wherein said developing step further comprises developing a radio frequency signal of about 27 megahertz.
Claim 9
Dependent Claim
97 words
A radio frequency air bar for supporting and curing a traveling web of material having a width comprising: a. means for providing a pressurized gas; b. means coupled to said providing means to direct said pressurized gas into contact with said traveling web of material; c. source of radio frequency energy; d. antenna means responsibly coupled to said source of radio frequency energy for uniformly coupling said radio frequency energy to and across said width of said traveling web of material; and, e. means for capacitively coupling said radio frequency energy to said traveling web of material.
Claim 10
Dependent Claim
97 words
A radio frequency air bar for supporting and curing a traveling web of material having a width comprising: a. means for providing a pressurized gas; b. means coupled to said providing means to direct said pressurized gas into contact with said traveling web of material; c. source of radio frequency energy; d. antenna means responsibly coupled to said source of radio frequency energy for uniformly coupling said radio frequency energy to and across said width of said traveling web of material; and, e. means for capacitively coupling said radio frequency energy to said traveling web of material.
Claim 11
Independent Claim
65 words
A method of curing a traveling web of material comprising: a. directing a pressurized gas at said traveling web of material; b. developing a radio frequency signal; c. coupling said radio frequency signal to an antenna disposed across the width of said traveling web of material; and, d. capacitively coupling said radio frequency signal to and across the width of said traveling web of material.
Claim 12
Independent Claim
65 words
A method of curing a traveling web of material comprising: a. directing a pressurized gas at said traveling web of material; b. developing a radio frequency signal; c. coupling said radio frequency signal to an antenna disposed across the width of said traveling web of material; and, d. capacitively coupling said radio frequency signal to and across the width of said traveling web of material.
References Cited (Backward Citations)
US4257167A
Cited
US4638571A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-17 | 1994-12-17 | 1995-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-17 | 1998-12-17 | 1999-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-17 | 2002-12-17 | 2003-06-18 | $7700.00 | Window Closed / Lapsed |