Patent US3699663A successfully refreshed from Google Patents.
US3699663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating sheet-like material with fluid
Assignee: Individual
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Filing: 1971-01-12
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Granted: 1972-10-24
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Expires: 1991-01-12
Abstract
Abstract In air-through dryers for wet sheet-like material, such as paper, textiles, etc., the moist sheet-like material is subjected to an air pressure differential across the same so that heated or unheated air is caused to be engaged against one side of the sheet-like material and pass therethrough to the other side thereof to remove moisture from such sheet-like material as the air passes therethrough, such moisture being removed by a pushing out of the moisture by the air and/or by air entrainment. A belt means of this invention comprising a perforated flexible wall carrying felt fabric or other similar material on one side thereof is utilized in a manner to engage against the moist sheet-like material to compress the same during the passage of air through the perforated flexible wall and through the moist sheet-like material to assist in the water removal thereof by tending to cause the retained moisture of the sheet-like material to continuously fill the voids thereof and be more readily swept away by the air flow than when no compressing of the moist sheetlike material takes place.
Inventors
- 👤 Robert R Candor
- 👤 James T Candor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:12
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; D; D06; D06B; D06B15/00; D06B15/04
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
160 words
In an air-through drying apparatus for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by air flowing substantially transversely through the sheet-like material by a pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a belt means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said belt means having means for causing the air flow to compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to remove moisture therefrom, said means of said belt means comprising opening means passing through said belt means, said belt means comprising a flexible wall having said opening means passing therethrough, said belt means having an air open covering on the side thereof that is to engage said sheet-like material and cover said opening means.
Claim 2
Dependent Claim
160 words
In an air-through drying apparatus for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by air flowing substantially transversely through the sheet-like material by a pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a belt means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said belt means having means for causing the air flow to compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to remove moisture therefrom, said means of said belt means comprising opening means passing through said belt means, said belt means comprising a flexible wall having said opening means passing therethrough, said belt means having an air open covering on the side thereof that is to engage said sheet-like material and cover said opening means.
Claim 3
Dependent Claim
40 words
In an apparatus as set forth in claim 1, the further improvement wherein said apparatus has movable support means for conveying said sheet-like material through said apparatus, said belt means being disposed between said support means and said sheet-like material.
Claim 4
Dependent Claim
46 words
In an apparatus as set forth in claim 1, the further improvement wherein said apparatus has movable support means for conveying said sheet-like material through said apparatus, said belt means being disposed on the side of said sheet-like material that faces away from said support means.
Claim 5
Dependent Claim
147 words
In an air-through drying method for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by air flowing substantially transversely through the sheet-like material when the sheet-like material is passed through a pressure differential creating zone, the improvement comprising the steps of engaging a belt means against said sheet-like material on the higher pressure side of said sheet-like material in said zone so that the air flow in said zone will compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to remove moisture therefrom, providing opening means through said belt means for the passage of said air therethrough, forming said belt means from a flexible wall having said opening means therethrough, and covering said flexible wall with an air open covering material that is to engage said sheet-like material and cover said opening means.
Claim 6
Dependent Claim
147 words
In an air-through drying method for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by air flowing substantially transversely through the sheet-like material when the sheet-like material is passed through a pressure differential creating zone, the improvement comprising the steps of engaging a belt means against said sheet-like material on the higher pressure side of said sheet-like material in said zone so that the air flow in said zone will compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to remove moisture therefrom, providing opening means through said belt means for the passage of said air therethrough, forming said belt means from a flexible wall having said opening means therethrough, and covering said flexible wall with an air open covering material that is to engage said sheet-like material and cover said opening means.
Claim 7
Dependent Claim
37 words
In a method as set forth in claim 4, the further improvement comprising the step of disposing said belt means between said sheet-like material and a movable support means that conveys said sheet-like material through said zone.
Claim 8
Dependent Claim
43 words
In a method as set forth in claim 4, the further improvement comprising the step of disposing said belt means on the side of said sheet-like material that faces away from a movable support means that conveys said sheet-like material through said zone.
Claim 9
Dependent Claim
133 words
In an air through drying apparatus of the high velocity air flow hood type for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by superatmospheric air flowing from said hood substantially transversely through the sheet-like material by a resulting pressure differential being created across the sheet-like material as the same passes through the hood of said apparatus, the improvement comprising a flexible wall means for engaging against said sheet-like material as the same passes through said hood of said apparatus and being disposed on the higher pressure side of said sheet-like material, said flexible wall means having means for causing the air flow to compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to remove moiSture therefrom.
Claim 10
Dependent Claim
133 words
In an air through drying apparatus of the high velocity air flow hood type for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by superatmospheric air flowing from said hood substantially transversely through the sheet-like material by a resulting pressure differential being created across the sheet-like material as the same passes through the hood of said apparatus, the improvement comprising a flexible wall means for engaging against said sheet-like material as the same passes through said hood of said apparatus and being disposed on the higher pressure side of said sheet-like material, said flexible wall means having means for causing the air flow to compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to remove moiSture therefrom.
Claim 11
Dependent Claim
29 words
In an apparatus as set forth in claim 7, the further improvement wherein said means of said flexible wall means comprises opening means passing through said flexible wall means.
Claim 12
Dependent Claim
55 words
In an apparatus as set forth in claim 8, the further improvement wherein said flexible wall means has a flexible wall having said opening means passing therethrough, said flexible wall means having an air open covering on the side of said flexible wall that is to engage said sheet-like material and covering said opening means.
Claim 13
Dependent Claim
44 words
In an apparatus as set forth in claim 7, the further improvement wherein said apparatus has movable support means for conveying said sheet-like material through said hood of said apparatus, said flexible wall means being a continuous belt means disposed completely within said hood.
Claim 14
Dependent Claim
47 words
In an apparatus as set forth in claim 7, the further improvement wherein said apparatus has movable support means for conveying said sheet-like material through said apparatus, said flexible wall means being disposed on the side of said sheet-like material that faces away from said support means.
Claim 15
Dependent Claim
123 words
In an air-through drying method for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by superatmosheric air flowing from a high velocity air flow hood substantially transversely through the sheet-like material when the sheet-like material is passed through a resulting pressure differential creating zone defined in part by said high velocity air flow hood, the improvement comprising the step of engaging a flexible wall means against said sheet-like material on the higher pressure side of said sheet-like material as the same passes through said hood so that the air flow in said zone will compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to remove moisture therefrom.
Claim 16
Dependent Claim
123 words
In an air-through drying method for wet sheet-like material wherein moisture from the wet sheet-like material is removed therefrom by superatmosheric air flowing from a high velocity air flow hood substantially transversely through the sheet-like material when the sheet-like material is passed through a resulting pressure differential creating zone defined in part by said high velocity air flow hood, the improvement comprising the step of engaging a flexible wall means against said sheet-like material on the higher pressure side of said sheet-like material as the same passes through said hood so that the air flow in said zone will compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to remove moisture therefrom.
Claim 17
Dependent Claim
31 words
In a method as set forth in claim 12, the further improvement comprising the step of providing opening means through said flexible wall means for the passage of said air therethrough.
Claim 18
Dependent Claim
53 words
In a method as set forth in claim 13, the further improvement comprising the steps of forming said flexible wall means from a flexible wall having said opening means therethrough, and covering said flexible wall with an air open covering material that is to engage said sheet-like material and cover said opening means.
Claim 19
Dependent Claim
36 words
In a method as set forth in claim 12, the further improvement comprising the steps of forming said flexible wall means to form a continuous belt means, and disposing said belt means completely within said hood.
Claim 20
Dependent Claim
44 words
In a method as set forth in claim 12, the further improvement comprising the step of disposing said flexible wall means on the side of said sheet-like material that faces away from a movable support means that conveys said sheet-like material through said hood.
Claim 21
Dependent Claim
155 words
In a fluid-through apparatus for sheet-like material wherein the sheet-like material is treated by fluid flowing substantially transversely through the sheet-like material by a pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a belt means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said belt means having means for causing the fluid flow flow to compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to treat the same, said means of said belt means comprising opening means passing through said belt means, said belt means comprising a flexible wall having said opening means passing therethrough, said belt means having a fluid open covering on the side thereof that is to engage said sheet-like material and cover said opening means.
Claim 22
Dependent Claim
155 words
In a fluid-through apparatus for sheet-like material wherein the sheet-like material is treated by fluid flowing substantially transversely through the sheet-like material by a pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a belt means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said belt means having means for causing the fluid flow flow to compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to treat the same, said means of said belt means comprising opening means passing through said belt means, said belt means comprising a flexible wall having said opening means passing therethrough, said belt means having a fluid open covering on the side thereof that is to engage said sheet-like material and cover said opening means.
Claim 23
Dependent Claim
141 words
In a fluid-through method for sheet-like material Wherein the sheet-like material is treated by fluid flowing substantially transversely through the sheet-like material when the sheet-like material is passed through a pressure differential creating zone, the improvement comprising the steps of engaging a belt means against said sheet-like material on the higher pressure side of said sheet-like material in said zone so that the fluid flow in said zone will compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to treat the same, providing opening means through said belt means for the passage of said fluid therethrough, forming said belt means from a flexible wall having said opening means therethrough, and covering said flexible wall with a fluid open covering material that is to engage said sheet-like material and cover said opening means.
Claim 24
Dependent Claim
141 words
In a fluid-through method for sheet-like material Wherein the sheet-like material is treated by fluid flowing substantially transversely through the sheet-like material when the sheet-like material is passed through a pressure differential creating zone, the improvement comprising the steps of engaging a belt means against said sheet-like material on the higher pressure side of said sheet-like material in said zone so that the fluid flow in said zone will compress said belt means against said sheet-like material while flowing through said belt means into said sheet-like material to treat the same, providing opening means through said belt means for the passage of said fluid therethrough, forming said belt means from a flexible wall having said opening means therethrough, and covering said flexible wall with a fluid open covering material that is to engage said sheet-like material and cover said opening means.
Claim 25
Dependent Claim
122 words
In a fluid-through apparatus of the high velocity fluid flow type for sheet-like material wherein the sheet-like material is treated by pressurized fluid flowing from a chamber of said apparatus substantially transversely through the sheet-like material by a resulting pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a flexible wall means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said flexible wall means having means for causing the fluid flow to compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to treat the same.
Claim 26
Dependent Claim
122 words
In a fluid-through apparatus of the high velocity fluid flow type for sheet-like material wherein the sheet-like material is treated by pressurized fluid flowing from a chamber of said apparatus substantially transversely through the sheet-like material by a resulting pressure differential being created across the sheet-like material as the same passes through said apparatus, the improvement comprising a flexible wall means for engaging against said sheet-like material as the same passes through said apparatus and being disposed on the higher pressure side of said sheet-like material, said flexible wall means having means for causing the fluid flow to compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to treat the same.
Claim 27
Dependent Claim
117 words
In a fluid-through method for sheet-like material wherein the sheet-like material is treated by pressurized fluid flowing from a high velocity fluid flow chamber substantially transversely through the sheet-like material when the sheet-like material is passed through a resulting pressure differential creating zone defined in part by said high velocity fluid flow chamber, the improvement comprising the step of engaging a flexible wall means against said sheet-like material on the higher pressure side of said sheet-like material as the same passes through said zone so that the fluid flow in said zone will compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to treat the same.
Claim 28
Dependent Claim
117 words
In a fluid-through method for sheet-like material wherein the sheet-like material is treated by pressurized fluid flowing from a high velocity fluid flow chamber substantially transversely through the sheet-like material when the sheet-like material is passed through a resulting pressure differential creating zone defined in part by said high velocity fluid flow chamber, the improvement comprising the step of engaging a flexible wall means against said sheet-like material on the higher pressure side of said sheet-like material as the same passes through said zone so that the fluid flow in said zone will compress said flexible wall means against said sheet-like material while flowing through said flexible wall means into said sheet-like material to treat the same.
References Cited (Backward Citations)
US2888378A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |