US3895447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating cellulosic-containing articles to render them crease resistant
Assignee: VAPORTECH CORP
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Filing: 1973-05-10
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Granted: 1975-07-22
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Expires: 1993-05-10
Abstract
Abstract An apparatus for treating articles containing cellulosic fibers in all or a part of their composition with reactive chemicals to render the article crease resistant is disclosed. The apparatus includes a carousel unit having four treating chambers mounted for rotation at spaced time intervals through four treatment positions. Each of the treating chambers has inlet and outlet ports therein for circulation of heated gas therethrough and retractable valve means connecting the inlet and outlet ports of each chamber to the gas circulation means. Articles to be treated are placed in the first treatment chamber and preheated by circulation of heated air therethrough. The heating chamber then rotates to a second position wherein a gaseous mixture of treating chemicals is circulated through the treating chamber. The chamber then rotates to a third and fourth position wherein the articles are further treated.
Inventors
- 👤 Kenneth J Masero
- 👤 David L Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:02
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/10; D06M13/12; D06M13/127; D06B; D06B21/00; D06B21/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
263 words
An apparatus for the treatment of articles containing cellulosic fibers in all or a part of their composition with treating chemicals in the vapor phase to render them crease resistant, comprising: a supporting frame; a rotatable carousel unit supported for rotation on the frame having a series of vapor-confining treatment chambers mounted thereon for rotation between a first and succeeding treatment positions for treatment of articles contained therein, each treatment chamber including (1) access means permitting the articles to be treated to pass into and out of the treatment chamber, (2) support means within the chamber upon which the articles may be positioned in spaced apart relationship, and (3) inlet and outlet ports therein permitting introduction and exhaust of an externally supplied gaseous stream; power means operatively connected to the rotatable carousel unit to rotate the unit and each of the treatment chambers at periodic intervals between a first and succeeding treatment positions; gas circulating means including gas conveying ducts at each treatment position for circulating gas through one or more of the treatment chambers at that position; and valve means associated with each of the gas circulating means and inlet and outlet ports of each treatment chamber controlling flow of gas into and out of each treatment chamber, each valve means retracting to a non-interfering position from the inlet and outlet ports of the treatment chambers prior to rotation of the carousel unit to the next succeeding treatment position and then advancing in sealing contact with the inlet and outlet ports of each of the treating chambers in the succeeding treatment position.
Claim 2
Independent Claim
263 words
An apparatus for the treatment of articles containing cellulosic fibers in all or a part of their composition with treating chemicals in the vapor phase to render them crease resistant, comprising: a supporting frame; a rotatable carousel unit supported for rotation on the frame having a series of vapor-confining treatment chambers mounted thereon for rotation between a first and succeeding treatment positions for treatment of articles contained therein, each treatment chamber including (1) access means permitting the articles to be treated to pass into and out of the treatment chamber, (2) support means within the chamber upon which the articles may be positioned in spaced apart relationship, and (3) inlet and outlet ports therein permitting introduction and exhaust of an externally supplied gaseous stream; power means operatively connected to the rotatable carousel unit to rotate the unit and each of the treatment chambers at periodic intervals between a first and succeeding treatment positions; gas circulating means including gas conveying ducts at each treatment position for circulating gas through one or more of the treatment chambers at that position; and valve means associated with each of the gas circulating means and inlet and outlet ports of each treatment chamber controlling flow of gas into and out of each treatment chamber, each valve means retracting to a non-interfering position from the inlet and outlet ports of the treatment chambers prior to rotation of the carousel unit to the next succeeding treatment position and then advancing in sealing contact with the inlet and outlet ports of each of the treating chambers in the succeeding treatment position.
Claim 3
Dependent Claim
41 words
The apparatus of claim 1 wherein there are four treatment chambers and four treatment positions and wherein the gas circulating means of the treatment positions includes temperature control means to control the temperature of gas circulating through the respective treatment chambers.
Claim 4
Dependent Claim
31 words
The apparatus of claim 2 wherein the treatment positions include (1) a pre-treatment position, (2) a first reaction position, (3) a second reaction position and (4) a degassing and deodorizing position.
Claim 5
Dependent Claim
50 words
The apparatus of claim 3 wherein the gas circulating means of the first reaction position includes vaporizing means to introduce chemicals reactive with the articles into the gas stream passing into the treatment chamber and control means to vary the content of reactive gas vapor contained in the gas stream.
Claim 6
Dependent Claim
48 words
The apparatus of claim 2 including index means mounted on the supporting frame engaging the rotatatable cArousel unit at each treatment position to stop the carousel unit at the correct position for connection of the gas circulating means through the valve means to the inlet and outlet ports.
Claim 7
Dependent Claim
107 words
The apparatus of claim 1 wherein each valve means includes (1) a sealing diaphragm over the duct of each gas circulating means adjacent the inlet and outlet ports of each treating chamber movable between a first position in sealing contact with the inlet and outlet ports of the treating chamber for introducing and discharging gas into and out of the treating chamber and a second retracted position out of contact with the inlet and outlet ports and in sealing contact over the duct to allow rotation of the carousel unit to a succeeding treatment position and prevent escape of gas from the duct into the surrounding atmosphere.
Claim 8
Dependent Claim
26 words
The apparatus of claim 6 including means connected to the diaphragm of each of the valve means to move them between said first and second positions.
Claim 9
Dependent Claim
80 words
The apparatus of claim 1 wherein the inlet and outlet ports of each treating chamber are covered with layered plates movable relative to one another and having staggered openings therein for passage of gas therethrough when separated and prevention of passage of gas therethrough when together, and means separating one of the plates from the other to allow passage of the gas therethrough when the valve means is advanced into sealing contact with the respective port of the treating chamber.
Claim 10
Dependent Claim
72 words
The apparatus of claim 2 wherein the temperature control means includes a heat exchange unit having coils positioned in the duct of the gas circulating means, means supplying heat to the coils, a temperature sensor sensing the temperature of the circulating gas in the treatment chamber and control means modulating the amount of heat supplied to the coils in response to the sensed temperature to control the temperature of the treating chamber.
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) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |