Patent US4023713A successfully refreshed from Google Patents.
US4023713A
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US
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Apparatus for batchwise feeding of powders or particles
Assignee: Kloeckner CRA Patent GmbH
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Filing: 1975-10-03
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Granted: 1977-05-17
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Expires: 1995-10-03
Abstract
Abstract Apparatus for batchwise feeding of powders or other particulate materials from a pressurized supply vessel with a sealable discharge orifice including a movable sealing-and-metering member and a seal against which it seals during periods of non-discharge.
Inventors
- 👤 Karl Brotzmann
- 👤 Hans Georg Fassbinder
- 👤 Paul Gerhard Mantey
- 👤 Johann Claus Grapengiesser
- 👤 Alfred Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:55
CPC Classifications
G; G01; G01F; G01F11/00; G01F11/28; G01F11/30; G01F11/34; B; B01; B01J; B01J8/00; B01J8/0015; B01J8/0035; B65; B65G; B65G53/00; B65G53/34; B65G53/40
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
92 words
Apparatus for batch wise feeding of particles or powders from a pressurized supply container with a sealable discharge orifice comprising: a movable sealing and metering body; a sealing means mounted downstream of said sealing and metering body; a chamber wherein said sealing means is seated, wherein said chamber encloses an axially movable cylinder (19) mounted in said chamber surrounding a push rod (7) and equipped with an external displacement drive (23, 24, 25) means to move said cylinder axially; said push rod supporting said sealing and metering body at its upstream end.
Claim 2
Dependent Claim
92 words
Apparatus for batch wise feeding of particles or powders from a pressurized supply container with a sealable discharge orifice comprising: a movable sealing and metering body; a sealing means mounted downstream of said sealing and metering body; a chamber wherein said sealing means is seated, wherein said chamber encloses an axially movable cylinder (19) mounted in said chamber surrounding a push rod (7) and equipped with an external displacement drive (23, 24, 25) means to move said cylinder axially; said push rod supporting said sealing and metering body at its upstream end.
Claim 3
Dependent Claim
19 words
Apparatus according to claim 1 wherein said chamber includes a double part bellows which encloses said axially movable cylinder.
Claim 4
Dependent Claim
37 words
Apparatus as defined by claim 1 wherein the displacement drive consists of a positioning motor (23) and of shafts or spindles (25) driven by a chain system (24) and connected to a collar (20) on cylinder (19).
Claim 5
Dependent Claim
23 words
Apparatus as defined by claim 1 wherein the sealing and metering body (8) consists of a cylindrical disk with several spaced slopes (26).
Claim 6
Dependent Claim
37 words
Apparatus as defined by claim 1 wherein the cylindrical sealing and metering body (8) is guided inside a guide bushing (17) passing through and projecting above sealing plate (5) and provided with radial boreholes at various heights.
Claim 7
Dependent Claim
17 words
Apparatus as defined by claim 1 wherein the sealing and metering body (8) is of conical design.
Claim 8
Dependent Claim
114 words
Apparatus as defined by claim 1 wherein: said pushrod is movable and has an upstream end and a downstream end; said movable sealing and metering body is wear resistant and is mounted on the upstream end of said pushrod; the cross-section (4) of the discharge orifice of the supply container (1) being smaller than the flow cross-section (9) of the sealing means; and including in addition: a wear resistant guide bushing (17) adjacent the discharge orifice of said supply container and disposed so as to guide said sealing and metering body; and a cleansing blow system located adjacent to said sealing means, and adapted to blow a fluid under pressure across said sealing means.
Claim 9
Dependent Claim
27 words
Apparatus as defined by claim 7 wherein said cleansing blow system includes a compressed gas line (15) which discharges fluid in the region of said sealing means.
Claim 10
Dependent Claim
48 words
Apparatus as defined by claim 7 including in addition: a sealing plate (5) through which said pushrod extends; and a valve head (12) mounted downstream of said sealing and metering body on pushrod (7) and operating jointly with an elastic gasket (13) in a valve seat disk (11).
Claim 11
Dependent Claim
25 words
Apparatus as defined by claim 9, wherein the valve seat disk (11) is provided with radial channels (14) communicating with a compressed gas line (15).
Claim 12
Dependent Claim
24 words
Apparatus as defined in claim 8 including in addition a pipe segment (18) of lesser diameter than cylinder (19) mounted below sealing plate (5).
Claim 13
Dependent Claim
27 words
Apparatus as defined by claim 1, including in addition a stationary cylinder (38) enclosing said sealing-and-metering body (40, 51) and mounted at the foot of container (1).
Claim 14
Dependent Claim
14 words
Apparatus as defined by claim 12, wherein the stationary cylinder (38) penetrates container (1).
Claim 15
Dependent Claim
42 words
Apparatus as defined by claim 13, wherein the stationary cylinder (38) is closed on one side and is provided with inlet apertures (39) on its surface, and in that a cylinder-slider (40) with outlet orifices (41) is guided in the rear part.
Claim 16
Dependent Claim
28 words
Apparatus as defined by claim 13, wherein the foot (42) of cylinder-slider (40) rests on a movable valve-cone (44) which operates jointly with a stationary gasket ring (45).
Claim 17
Dependent Claim
70 words
Apparatus as defined by claim 12, including in addition a cock plug (51) rotating about a horizontal axis and mounted underneath an outlet orifice (50) on a stationary cylinder (38) which is open in the upward direction, said plug being provided with its own drive, and a valve cone (44) operating jointly with a gasket ring (45) and mounted downstream of said plug and also provided with its own drive.
Claim 18
Dependent Claim
39 words
Apparatus as defined by claim 16, wherein the drive of the cock plug is rotational in nature and the displacement drive of the valve cone (44) consists of a differential pressure cylinder (52) mounted inside a pressure chamber (53).
Claim 19
Dependent Claim
20 words
Apparatus as defined in claim 14 wherein the inlet apertures of said stationary cylinder are in the shape of triangles.
Claim 20
Dependent Claim
21 words
Apparatus as defined in claim 14 wherein the inlet apertures of said stationary cylinder are in the shape of helical slots.
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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |