Patent US3896996A successfully refreshed from Google Patents.
US3896996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injector with holder for an air mixer or the like
Assignee: AIRPROCESS AG
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Filing: 1974-04-19
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Granted: 1975-07-29
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Expires: 1994-04-19
Abstract
Abstract An injector with a holder for detachably disposing the injector in the bottom of the vessel of an apparatus for blowing a gas from below into said vessel, said injector consisting of an injector tube and an injector casing situated at some distance about the injector tube, the adjoining portion of the injector casing and the holder respectively, having identical conically slanting surfaces one contacting the other at least at one location.
Inventors
- 👤 Robert Jacques Roest
- 👤 Pieter Van Ruitenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:00
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44; B01F; B01F25/00; B01F25/30; B01F25/31; B01F25/312; B01F33/00; B01F33/40; B01F33/409; B01J8/1818; B01J8/1827; B01F35/00; B01F35/30; B01F2035/35; B01F2035/351
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
230 words
Injector with a holder for detachably disposing the injector in the bottom of a vessel receiving material to be treated by being introduced into the vessel and fluidified by blowing a gas from below into said vessel, the injector comprising an injector tube and an injector casing situated at some distance about the injector tube, said casing having at its upper end a closure with an opening corresponding to the outlet of said injector tube situated under said opening, the end portion of the wall of said casing turned away from the closure being outwardly thickened, the face of the thicker wall part turned towards the closure having a conically extending slant, the thicker wall part having at least one transverse channel connecting the outer peripheral surface of the injector casing with the space between injector tube and injector casing, said holder being hollow and comprising further a circumferential wall and on one side a transverse wall with a central opening having a cross-section smaller than the cross-section of the hollow space in the holder, the edge of the transverse wall encircling said central opening and turned towards said hollow space having a conically extending slant so that after fitting the injector in the holder the conically extending faces of the injector casing and of the transverse wall of the holder, respectively, contacting each other at least at one location.
Claim 2
Dependent Claim
230 words
Injector with a holder for detachably disposing the injector in the bottom of a vessel receiving material to be treated by being introduced into the vessel and fluidified by blowing a gas from below into said vessel, the injector comprising an injector tube and an injector casing situated at some distance about the injector tube, said casing having at its upper end a closure with an opening corresponding to the outlet of said injector tube situated under said opening, the end portion of the wall of said casing turned away from the closure being outwardly thickened, the face of the thicker wall part turned towards the closure having a conically extending slant, the thicker wall part having at least one transverse channel connecting the outer peripheral surface of the injector casing with the space between injector tube and injector casing, said holder being hollow and comprising further a circumferential wall and on one side a transverse wall with a central opening having a cross-section smaller than the cross-section of the hollow space in the holder, the edge of the transverse wall encircling said central opening and turned towards said hollow space having a conically extending slant so that after fitting the injector in the holder the conically extending faces of the injector casing and of the transverse wall of the holder, respectively, contacting each other at least at one location.
Claim 3
Dependent Claim
111 words
Injector with a holdeR as claim 1, wherein the thicker wall part of said injector casing is limited between the channels arranged in said wall part on one side, on the other side the free lower edge of said wall part has an outwardly protruding flange, the circumferential wall of said holder having inwardly directed flange underneath the channels in said wall so that, after fitting the injector into the holder the two flanges together with a sealing disposed thereinbetween contact each other forming a gastight closure for a portion of the hollow space in the holder, all channels in the injector casing communicating with said portion of said hollow space.
Claim 4
Dependent Claim
51 words
Injector as claim 2, wherein said hollow holder forms a portion of a circular channel-shaped elevated part of the bottom of said vessel, the gastight closed portion of said hollow space in the holder forming a portion of said circumferential channel in the elevated part of the bottom of the vessel.
Claim 5
Dependent Claim
57 words
Injector with a holder as claim 1, including a plurality of channels in the circumferential wall of said holder and corresponding to the number of channels in said thicker wall part of said injector casing, each of said channels in said holder corresponding to a channel in said injector casing and in alignment with the first-mentioned channel.
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) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |