US3572653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus to loosen compounds, especially molding-and core sands for foundries
Assignee: Individual
•
Filing: 1968-03-07
•
Granted: 1971-03-30
•
Expires: 1988-03-07
Abstract
Abstract Apparatus for treating a material such as foundry sand to maintain the same in a loose condition for various treatments such as preparation, cooling or transporting the same including a container for the material having a sidewall portion with vibrating means operatively associated with the container to swing the sidewall portion generally perpendicular to the longitudinal axis of the container in rotational vibrations of an amplitude and frequency such that the material within the container moves away from the sidewall portion to define an annular space between the material and the sidewall.
Inventors
- 👤 Dietmar Boenisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:45
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B22C5/0409; B22C5/0481; B01; B01F; B01F31/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
24 words
Apparatus according to claim 1 wherein said vibration means swings said sidewall in vibrations of an amplitude of about 10 to about 30 mm.
Claim 2
Dependent Claim
18 words
Apparatus according to claim 1 wherein said container consists of two tubes, one connected concentrically within the other.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 3 wherein the outer of said tubes includes a bottom and the inner of said tubes has one end spaced from said bottom.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 1 wherein said container consists of a tube longer than its diameter.
Claim 5
Dependent Claim
46 words
Apparatus according to claim 5 wherein said tube has opposite open ends one of which acts as a discharge for the material within said container, means operatively associated with said discharge end for selectively closing a portion thereof to provide a variable cross section for discharge.
Claim 6
Dependent Claim
59 words
Apparatus according to claim 1 wherein said container includes at least two tubes arranged side by side, with a joint opening communicating between said tubes at one end of each, at their lower ends, means for feeding the material into the opposite end of one of said tubes, said one tube being longer than the other of said tubes.
Claim 7
Dependent Claim
23 words
Apparatus according to claim 7 wherein openings for the inlet of compressed air are provided in said tubes at said one ends thereof.
Claim 8
Dependent Claim
37 words
Apparatus according to claim 1 wherein said container includes a bottom and at least said bottom is equipped with a lining of a material which minimizes any tendency of the material within said container to adhere thereto.
Claim 9
Dependent Claim
30 words
Apparatus according to claim 1 wherein the inner surface of said sidewall is roughened in order to reinforce the friction drive between said sidewall and the material within said container.
Claim 10
Dependent Claim
43 words
Apparatus according to claim 1 further including a frame in an upright position inserted in said container loosely, said frame having outer surfaces in contact with the inner surface of said sidewall to stop any of the material from adhering to said sidewall.
Claim 11
Dependent Claim
19 words
Apparatus according to claim 1 further including elastic means supporting said container, said vibration means including a rotating unbalance.
Claim 12
Dependent Claim
22 words
Apparatus according to claim 12 wherein said rotating unbalance extend over at least the major portion of the length of said container.
Claim 13
Dependent Claim
45 words
Apparatus according to claim 12 wherein said container comprises at least two rigidly connected tubes having opposite open ends, said rotating unbalance being in the axis or plane of symmetry between said tubes and being connected by a flexible shaft to a motor drive therefor.
Claim 14
Dependent Claim
13 words
Apparatus according to claim 1 further including withiN said container additional mixing means.
Claim 15
Dependent Claim
36 words
Apparatus according to claim 15 wherein said additional mixing means are driven in a direction of rotation opposite to the direction of rotation of the material within said container induced by the swinging of said sidewall.
Claim 16
Dependent Claim
34 words
Apparatus according to claim 15 wherein said mixing means includes a hollow shaft equipped with air outlets for the purpose of introduction of cooling air or transport air into the material within said container.
Claim 17
Dependent Claim
48 words
Apparatus according to claim 15 wherein said mixing means includes a plurality of plate-shaped members arranged at different levels within said container, said members being perforated, and reciprocating means operatively associated with said mixing means to move said members back and forth in the direction of said axis.
Claim 18
Dependent Claim
15 words
Apparatus according to claim 15 wherein said mixing means is elastic or is elastically supported.
Claim 19
Dependent Claim
43 words
Apparatus according to claim 15 further including means for the simultaneous measurement of the properties of the material within said container, said last-mentioned means including a device for the registration of the torsional moment or the compressional stress encountered by said mixing means.
Claim 20
Dependent Claim
56 words
Apparatus according to claim 20 further including a tracer means within said container operatively associated with said device for the registration of the torsional moment or the compressional stress encountered by said mixing means, and means for feeding additives to the material within said container in response to variations of the properties registered by said tracer.
Claim 21
Dependent Claim
43 words
Apparatus according to claim 15 wherein said additional mixing means include terminal portions juxtaposed to said sidewall of said container, said terminal portions and said sidewall forming a wedge-shaped slit, the cross section of which decreases in the rotational direction of said material.
Claim 22
Dependent Claim
16 words
Apparatus according to claim 22 wherein said additional mixing means is S-shaped in horizontal cross section.
Claim 23
Dependent Claim
81 words
Apparatus according to claim 1 further including means for the simultaneous measurement of the properties of the material within said container, said sidewall including an upper rim, a turning device positioned over a portion of said rim, particles of the material within said container being blown out of the space between said sidewall and the material and into contact with said turning device, and a garland-curb and a registration unit for the quantitative measurement of the particles which are blown out.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |