US3574261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for drying permeable webs
Assignee: WR Grace and Co
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Filing: 1968-09-24
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Granted: 1971-04-13
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Expires: 1988-09-24
Abstract
Abstract A moving textile web is expunged of liquid by a very highpressure air jet which is directed through a thin slot transverse to the direction of travel of the web. The jet is directed downwardly at the web which is horizontally supported by an open weave wire belt. The wire belt moves at a speed different from that of the web in order to avoid a pattern formation on the web as it is impressed on the belt by the force of the air jet.
Inventors
- 👤 Herman H Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:49
CPC Classifications
D; D06; D06B; D06B15/00; D06B15/04; D06B15/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
The method of expunging liquid retained in a textile web comprising; translating the textile web past a transverse nozzle, blowing a jet of relatively high pressure air out of the nozzle and through the textile web while supporting the web opposite the nozzle on a foraminous belt which is translating at a linear speed differing from that of the web so that patterning of the web against the belt is avoided.
Claim 2
Independent Claim
71 words
The method of expunging liquid retained in a textile web comprising; translating the textile web past a transverse nozzle, blowing a jet of relatively high pressure air out of the nozzle and through the textile web while supporting the web opposite the nozzle on a foraminous belt which is translating at a linear speed differing from that of the web so that patterning of the web against the belt is avoided.
Claim 3
Independent Claim
79 words
The method of expunging liquid retained in a textile web comprising; translating the textile web past a transverse nozzle; blowing a jet of such high pressure air out of the nozzle and through the web as to entrain the liquid in a fine mist on the opposite side of the web; and supporting the web opposite the nozzle on a foraminous belt which is translated past the nozzle at a linear speed differing from that of the textile web.
Claim 4
Independent Claim
79 words
The method of expunging liquid retained in a textile web comprising; translating the textile web past a transverse nozzle; blowing a jet of such high pressure air out of the nozzle and through the web as to entrain the liquid in a fine mist on the opposite side of the web; and supporting the web opposite the nozzle on a foraminous belt which is translated past the nozzle at a linear speed differing from that of the textile web.
Claim 5
Dependent Claim
28 words
The method of claim 2 further comprising; coalescing and condensing the fine mist in a confined chamber as it emerges from the web and through the foraminous surface.
Claim 6
Independent Claim
102 words
An apparatus for removing liquid retained in a textile web which is adapted for translatiOn through the apparatus comprising; a foraminous belt for supporting the textile web; a nozzle disposed transversely to the direction of movement of the web and directed to inject a relatively high pressure air jet through the textile web and the foraminous belt and further wherein the foraminous support belt is adapted to be drawn under the air jet at a speed slightly differing from that of the textile web so as to avoid patterning of the textile web by the support belt as it passes the nozzle.
Claim 7
Independent Claim
102 words
An apparatus for removing liquid retained in a textile web which is adapted for translatiOn through the apparatus comprising; a foraminous belt for supporting the textile web; a nozzle disposed transversely to the direction of movement of the web and directed to inject a relatively high pressure air jet through the textile web and the foraminous belt and further wherein the foraminous support belt is adapted to be drawn under the air jet at a speed slightly differing from that of the textile web so as to avoid patterning of the textile web by the support belt as it passes the nozzle.
Claim 8
Independent Claim
104 words
An apparatus for removing liquid retained in a textile web which is adapted for translation past the apparatus comprising; a foraminous support member for supporting the textile web which support member is adapted to translate at a linear speed differing from that of the web so that patterning of the web against the support member is avoided, a nozzle disposed transversely to the direction of movement of the web and directed to inject such high pressure air jet through the textile web as to entrain liquid contained therein in fine mist emanating on the opposite side of the web and the foraminous support member.
Claim 9
Independent Claim
104 words
An apparatus for removing liquid retained in a textile web which is adapted for translation past the apparatus comprising; a foraminous support member for supporting the textile web which support member is adapted to translate at a linear speed differing from that of the web so that patterning of the web against the support member is avoided, a nozzle disposed transversely to the direction of movement of the web and directed to inject such high pressure air jet through the textile web as to entrain liquid contained therein in fine mist emanating on the opposite side of the web and the foraminous support member.
Claim 10
Dependent Claim
33 words
The aPparatus of claim 5 further comprising; an expansion chamber positioned under the foraminous belt opposite the air jet for coalescing and condensing the liquid as the fine mist expands into the chamber.
Claim 11
Dependent Claim
37 words
The apparatus of claim 5 wherein the foraminous support member is a belt adapted to translate at a linear speed differing from that of the web so that patterning of the web against the belt is avoided.
Claim 12
Independent Claim
122 words
An apparatus for removing liquid retained in a moving textile web comprising a nozzle disposed transversely to the direction of movement of the web and directed to inject a high pressure air jet downwardly through the textile web; a foraminous support belt drawn horizontally under the nozzle and in close proximity thereto as it supports the moving web, means positioned to collect the expunged liquid; means for inverting the textile web to place its opposite face upward; a second transversely disposed nozzle directed downwardly through the opposite face of the textile web; a second foraminous belt drawn horizontally under the air jet and the textile web as it passes under the air jet; and a second means for collecting the expunged liquid.
Claim 13
Independent Claim
122 words
An apparatus for removing liquid retained in a moving textile web comprising a nozzle disposed transversely to the direction of movement of the web and directed to inject a high pressure air jet downwardly through the textile web; a foraminous support belt drawn horizontally under the nozzle and in close proximity thereto as it supports the moving web, means positioned to collect the expunged liquid; means for inverting the textile web to place its opposite face upward; a second transversely disposed nozzle directed downwardly through the opposite face of the textile web; a second foraminous belt drawn horizontally under the air jet and the textile web as it passes under the air jet; and a second means for collecting the expunged liquid.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |