Patent US4007969A successfully refreshed from Google Patents.
US4007969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for fluidizing and distributing powder
Assignee: Desmarquest et CEC SA
•
Filing: 1975-07-14
•
Granted: 1977-02-15
•
Expires: 1995-07-14
Abstract
Abstract A device for fluidizing and distributing a powder in suspension in a carrier gas, characterized in that it comprises, between an inlet conduit fed with said powder and an outlet conduit adapted to distribute the powder once fluidized, a separating means dividing said inlet conduit into two pipes which open and converge into a chamber communicating with said outlet conduit.
Inventors
- 👤 Gerard Aubin
- 👤 Michel Arsene Braguier
- 👤 Christian Naturel
- 👤 Etienne M. Poulin
- 👤 Joseph A. Wattre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:42
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1404; B01; B01J; B01J8/00; B01J8/18; B01J8/1818; B05B7/16; B05B7/22; B05B7/222; B05B7/226
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
A device for fluidizing and distributing a powder in suspension in a carrier gas comprising: an enclosed cornerless chamber having an inner wall and a center; inlet conduit means for feeding a powder to be fluidized into said chamber; separating means dividing said inlet conduit into two pipes communicating with said chamber, said pipes having axes which converge to a point in the vicinity of said wall; and outlet conduit means for distributing said powder once fluidized, said outlet conduit means having an opening communicating with said chamber, and said opening being located in the vicinity of said center of said chamber.
Claim 2
Independent Claim
102 words
A device for fluidizing and distributing a powder in suspension in a carrier gas comprising: an enclosed cornerless chamber having an inner wall and a center; inlet conduit means for feeding a powder to be fluidized into said chamber; separating means dividing said inlet conduit into two pipes communicating with said chamber, said pipes having axes which converge to a point in the vicinity of said wall; and outlet conduit means for distributing said powder once fluidized, said outlet conduit means having an opening communicating with said chamber, and said opening being located in the vicinity of said center of said chamber.
Claim 3
Dependent Claim
56 words
A device according to claim 1 wherein said outlet conduit means includes two tubes with conical end portions nested one inside the other to form said opening, said tubes being adapted to carry a flow of gas similar to the carrier gas, and said end portions and said opening constituting a suction device of the venturi-type.
Claim 4
Dependent Claim
27 words
A device according to claim 2, wherein one of said tubes is mounted on means for adjusting its position with respect to the other of said tubes.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |