US3973703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for discharging powdery or granular material
Assignee: I P T INST FOR POWDER Technology
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Filing: 1975-05-22
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Granted: 1976-08-10
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Expires: 1995-05-22
Abstract
Abstract A device for discharging powdery or granular material comprises a plurality of inclined parallel plates reciprocably mounted relative to a base member and is adapted to release the powdery or granular material when the parallel plates are moved relative to the base member.
Inventors
- 👤 Ivan Anton Peschl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:08
CPC Classifications
B; B65; B65D; B65D90/00; B65D90/54; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/44
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
181 words
A device for the discharge of powdery or granular material from a bunker having an outlet port on the bottom side thereof and comprising a member mounted for reciprocation and having one or more passages, said device being characterized in that the reciprocatory member is provided with a plurality of strips bounding said passages and being at an angle to the direction of movement of the reciprocatory member and being each at an angle differing from 90° to vertical, the distance between the strips being such that at a standstill of said member a bridge of the material is formed between the top edge of one of said strips and a part of the adjacent strip, and the angle between at least the lower part of said one strip and horizontal, viewed in the direction of flow of the material, is larger than the angle of said one strip at which the material flows through said member when the reciprocatory member comes to a standstill, and means to reciprocate said member in a direction transverse to said strips to cause dispensing.
Claim 2
Independent Claim
181 words
A device for the discharge of powdery or granular material from a bunker having an outlet port on the bottom side thereof and comprising a member mounted for reciprocation and having one or more passages, said device being characterized in that the reciprocatory member is provided with a plurality of strips bounding said passages and being at an angle to the direction of movement of the reciprocatory member and being each at an angle differing from 90° to vertical, the distance between the strips being such that at a standstill of said member a bridge of the material is formed between the top edge of one of said strips and a part of the adjacent strip, and the angle between at least the lower part of said one strip and horizontal, viewed in the direction of flow of the material, is larger than the angle of said one strip at which the material flows through said member when the reciprocatory member comes to a standstill, and means to reciprocate said member in a direction transverse to said strips to cause dispensing.
Claim 3
Dependent Claim
25 words
A device according to claim 1 and characterized in that the angle between a strip and the plane going through the outlet port is adjustable.
Claim 4
Dependent Claim
25 words
A device according to claim 1 and characterized in that the number of reciprocatory movements per unit time of the reciprocatory member can be regulated.
Claim 5
Dependent Claim
21 words
A device according to claim 1 and characterized in that the amplitude of the stroke of the reciprocatory member is adjustable.
Claim 6
Dependent Claim
37 words
A device according to claim 1 and characterized in that the angle between the top portion of the strip and the horizontal is smaller than the angle between the lower portion of the strip and the horizontal.
Claim 7
Dependent Claim
26 words
A device according to claim 1 and characterized in that the distance between two adjacent strips, viewed in the direction of flow of the material, increases.
Claim 8
Dependent Claim
17 words
A device according to claim 1 and characterized in that two adjacent strips exhibit a negative overlap.
Claim 9
Dependent Claim
36 words
A device according to claim 1 and characterized in that the strips are adjustable about pivotal shafts located near the top ends of the strips and extending parallel to the axes of length of the strips.
Claim 10
Dependent Claim
19 words
A device according to claim 1 and characterized in that the strips are arranged in a readily removable frame.
Claim 11
Dependent Claim
29 words
A device according to claim 1 and characterized in that the frame holding the strips is slidably accommodated in a tray pivoted to the bottom side of a bunker.
Claim 12
Dependent Claim
30 words
A device according to claim 1 and characterized in that the frame holding the strips is removably arranged in a supporting frame pivoted to the bottom side of a bunker.
Claim 13
Independent Claim
259 words
A device for the discharge of powdery material from a bunker provided with an outlet port on the bottom side, said device comprising a member mounted for reciprocation for the discharge having one or more passages and characterized in that the reciprocatory member is provided with a plurality of first strips being at an angle to the direction of movement of the reciprocatory member and being each at an angle differing from 90° to the plane going through the outlet port and in that said reciprocatory member is provided with a plurality of second strips, each of said second strips being fixed to a first strip and extending from said first strip toward an adjacent first strip such that a passage is formed between a free edge of said second strip and said adjacent first strip, each of said second strips being at an angle differing from 90° to the plane going through the outlet port and being at an angle to the direction of movement of the reciprocating member, and the distance between a free edge of a second strip and said adjacent first strip being such that at a standstill of said member a bridge is formed between said edge and said adjacent first strip while the angle between at least the lower part of said adjacent strip and the horizontal is larger than the angle of the slope the material tends to follow when said member comes to a standstill, and means to reciprocate said member in a direction transverse to said slats to cause dispensing.
Claim 14
Independent Claim
259 words
A device for the discharge of powdery material from a bunker provided with an outlet port on the bottom side, said device comprising a member mounted for reciprocation for the discharge having one or more passages and characterized in that the reciprocatory member is provided with a plurality of first strips being at an angle to the direction of movement of the reciprocatory member and being each at an angle differing from 90° to the plane going through the outlet port and in that said reciprocatory member is provided with a plurality of second strips, each of said second strips being fixed to a first strip and extending from said first strip toward an adjacent first strip such that a passage is formed between a free edge of said second strip and said adjacent first strip, each of said second strips being at an angle differing from 90° to the plane going through the outlet port and being at an angle to the direction of movement of the reciprocating member, and the distance between a free edge of a second strip and said adjacent first strip being such that at a standstill of said member a bridge is formed between said edge and said adjacent first strip while the angle between at least the lower part of said adjacent strip and the horizontal is larger than the angle of the slope the material tends to follow when said member comes to a standstill, and means to reciprocate said member in a direction transverse to said slats to cause dispensing.
References Cited (Backward Citations)
US2869991A
Cited
US2872073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |