US3933122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor deposition apparatus
Assignee: Occidental Chemical Corp
•
Filing: 1974-08-01
•
Granted: 1976-01-20
•
Expires: 1994-08-01
Abstract
Abstract An apparatus for use in a process for imparting flame retardance to cellulose containing materials which comprises an enclosed chamber having means for introducing a treating gas into the chamber and maintaining the gas in a treatment chamber where it is in contact with a cellulosic textile material which has been introduced into the chamber and is passed therethrough. The chamber is readily adaptable to high speed commercial textile processing machinery.
Inventors
- 👤 George M. Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:56
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/667; D06M13/00; D06M13/244; D06M13/282; D06M13/322; D06M13/46; D06M15/673; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
159 words
An apparatus for the gaseous ammonia polymerization of resin on cellulosic textile materials which comprises: a housing; a gas inlet means disposed in the upper portion of said housing; a gas outlet means disposed in the lower portion of said housing; material inlet means and material outlet means disposed in the lower portion of said housing above said gas outlet means; partition means disposed in said housing above said gas outlet means and below said gas inlet means so as to form a gas treatment chamber in the upper portion of said housing, said partition means including means for the introduction into and removal from said gas treatment chamber of textile material to be treated in said gas treatment chamber while minimizing the passage of gas into and out of said gas treatment chamber; and means disposed in said gas treatment chamber for supporting textile material to be treated, said support means being disposed below said gas inlet means.
Claim 2
Independent Claim
159 words
An apparatus for the gaseous ammonia polymerization of resin on cellulosic textile materials which comprises: a housing; a gas inlet means disposed in the upper portion of said housing; a gas outlet means disposed in the lower portion of said housing; material inlet means and material outlet means disposed in the lower portion of said housing above said gas outlet means; partition means disposed in said housing above said gas outlet means and below said gas inlet means so as to form a gas treatment chamber in the upper portion of said housing, said partition means including means for the introduction into and removal from said gas treatment chamber of textile material to be treated in said gas treatment chamber while minimizing the passage of gas into and out of said gas treatment chamber; and means disposed in said gas treatment chamber for supporting textile material to be treated, said support means being disposed below said gas inlet means.
Claim 3
Dependent Claim
19 words
Apparatus as claimed in claim 1 wherein said gas inlet means is disposed in the top of said housing.
Claim 4
Dependent Claim
34 words
Apparatus as claimed in claim 2, wherein a gas distribution means is disposed in said gas treatment chamber in the upper portion thereof between the uppermost material supporting means and the gas inlet means.
Claim 5
Dependent Claim
19 words
Apparatus as claimed in claim 2 wherein the apparatus includes a vacuum means attached to said gas outlet means.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |