US3945131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web drying apparatus
Assignee: Individual
•
Filing: 1974-11-07
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Granted: 1976-03-23
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Expires: 1994-11-07
Abstract
Abstract Apparatus for drying a traveling web which is permeable to air, has a rotating foraminous drum on which the web is wrapped and screw-type propellers mounted in each end of the drum, the diameters of the propellers closely approaching the inside diameters of the drum. Rotation of the propellers effects suction in the drum. Provision is made for heating air to be sucked through the web into the drum, and optionally for recirculating more or less of the air flowing from the ends of the drum back to the drum's periphery.
Inventors
- 👤 Eduard Kusters
- 👤 Kurt Quoos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:21
CPC Classifications
F; F26; F26B; F26B13/00; F26B13/10; F26B13/14; F26B13/16; Y; Y10; Y10S; Y10S68/00; Y10S68/903
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
150 words
In apparatus for the removal of moisture from air permeable material webs such as in the dyeing of dyed fabrics, finished facbrics and the like, comprising a rotating foraminous drum over which the web passes, a housing in which said drum is supported for rotation and fans, disposed in the end of the drum and supported to be adjustable longitudinally, to draw air through the periphery of the drum over a predetermined circumferential zone of the drum over which the web is running, the improvement comprising: a. the fans being a pair of fans disposed one in each end of the drum; b. a motor unit associated with each fan on which said fan is mounted; and c. actuation means for inserting said motor units and fans into the drum and withdrawing them therefrom to adjust the length of the zone over which the air is drawn through the web.
Claim 2
Dependent Claim
150 words
In apparatus for the removal of moisture from air permeable material webs such as in the dyeing of dyed fabrics, finished facbrics and the like, comprising a rotating foraminous drum over which the web passes, a housing in which said drum is supported for rotation and fans, disposed in the end of the drum and supported to be adjustable longitudinally, to draw air through the periphery of the drum over a predetermined circumferential zone of the drum over which the web is running, the improvement comprising: a. the fans being a pair of fans disposed one in each end of the drum; b. a motor unit associated with each fan on which said fan is mounted; and c. actuation means for inserting said motor units and fans into the drum and withdrawing them therefrom to adjust the length of the zone over which the air is drawn through the web.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 and further including a casing within said housing, said drum being disposed in said casing with the ends of said drum projecting therefrom.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 2 wherein said drum has a circumferential outer flange rotating therewith and further including bearing rollers mounted on the wall of said casing supporting said outer flange.
Claim 5
Dependent Claim
21 words
Apparatus according to claim 3 wherein said casing includes an air inlet and further including heating means installed at said inlet.
Claim 6
Dependent Claim
16 words
Apparatus according to claim 1 wherein each motor unit is mounted on an adjustable linkage means.
Claim 7
Dependent Claim
32 words
Apparatus according to claim 5 wherein the actuating means for insertion of the fan unit comprises a screw spindle and a nut cooperating to move said linkage actuating the fan motor unit.
Claim 8
Dependent Claim
38 words
Apparatus according to claim 1 wherein said actuation means include a sensor which senses the position of the edge of the web, said sensor unit providing an output to control the movement of said motor unit and fan.
Claim 9
Dependent Claim
18 words
Apparatus according to claim 1 wherein said housing contains adjustable air inlet louvers and adjustable air outlet louvers.
Claim 10
Dependent Claim
21 words
Apparatus according to claim 8 wherein the ends of the drum lie in line with the outlet louvers in said housing.
Claim 11
Dependent Claim
18 words
Apparatus according to claim 8 wherein said air inlet louvers are in the lower part of the housing.
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |