US3799404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for feeding particulate products such as powdered or granular materials from a container
Assignee: STE TRANSITUBE PLAN DE CAMPAGNE FR
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Filing: 1972-06-20
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Granted: 1974-03-26
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Expires: 1992-06-20
Abstract
Abstract This invention relates to devices for feeding particulate products such as powdered or granular materials from a container, and the object of the invention is to prevent or minimize any tendency for the product to become packed to form bridges that considerably hamper their removal. In the invention, at least one part of the container is mounted for rotation on a smooth surface of a fixed pedestal. This pedestal has a discharge vessel for the product extending substantially diametrically to the container. Conveniently this discharge channel is trough-shaped.
Inventors
- 👤 A Taupin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:48
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/46
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
149 words
A device for feeding particulate products at controlled rates from a vertical container, said device comprising a stationary pedestal having a smooth upper plane surface and a lower surface positionable on any planar supporting surface, a bottomless vertical container having a vertical axis with said vertical container being mounted for rotation of its lower end about the said vertical axis on said smooth upper plane surface of said pedestal, drive means for rotating said bottomless vertical container about said vertical axis, a trough-shaped channel in said smooth upper plane surface extending transversely beneath and outwardly beyond the periphery of the lower end of said vertical container for receiving particulate products from said vertical container and means for moving particulate products in said trough-shaped channel along the length of said trough-shaped channel to be discharged from one end of said trough-shaped channel outwardly beyond the periphery of said vertical container.
Claim 2
Independent Claim
149 words
A device for feeding particulate products at controlled rates from a vertical container, said device comprising a stationary pedestal having a smooth upper plane surface and a lower surface positionable on any planar supporting surface, a bottomless vertical container having a vertical axis with said vertical container being mounted for rotation of its lower end about the said vertical axis on said smooth upper plane surface of said pedestal, drive means for rotating said bottomless vertical container about said vertical axis, a trough-shaped channel in said smooth upper plane surface extending transversely beneath and outwardly beyond the periphery of the lower end of said vertical container for receiving particulate products from said vertical container and means for moving particulate products in said trough-shaped channel along the length of said trough-shaped channel to be discharged from one end of said trough-shaped channel outwardly beyond the periphery of said vertical container.
Claim 3
Dependent Claim
49 words
The invention of claim 1 in which said means for moving particulate products along the length of said trough-shaped channel includes a helical spring located in said channel and having a diameter less than the depth of said channel and driving means for rotating said spring about its axis.
Claim 4
Dependent Claim
17 words
The invention of claim 1 additionally including running members on which said container rests on said pedestal.
Claim 5
Dependent Claim
57 words
The invention of claim 1 additionally including a wire-like member fixedly disposed across the bottom end of said container and extending diametrically near the upper surface of said pedestal for engaging particulate products to cause movement of the particulate products into the trough-shaped channel to insure substantially total evacuation of the particulate products from said vertical container.
Claim 6
Dependent Claim
65 words
The invention of claim 1 additionally including a seal joint positioned between said pedestal and the lower end of said vertical container, said seal joint including a circular channel surrounding the lower end of said vertical container and vane means extending from the external periphery of the lower end of said vertical container into said channel to remove any particulate products from said circular channel.
Claim 7
Dependent Claim
20 words
The invention of claim 1 wherein said drive means includes means for driving said container and said helical spring differentially.
Claim 8
Dependent Claim
54 words
The invention of claim 6 wherein said drive means includes two drive shafts, said helical member being connected to one of said drive shafts and a roller connected to the other of said drive shafts and wherein said roller frictionally engages flange means forming a part of the vertical container for rotating said container.
Claim 9
Dependent Claim
51 words
The invention of claim 6 wherein said drive means includes a single drive shaft connected to said helical spring and wheel means having a radial drive segmeNt capable of making contact for a fraction of a revolution with flange means forming a portion of the lower end of said vertical container.
Claim 10
Dependent Claim
47 words
The invention of claim 1 wherein said vertical container includes an upper portion fixedly supported and a lower portion comprising a skirt concentric with said upper portion, said skirt being rotatably mounted with respect to the upper surface of said pedestal which extends outwardly beyond said skirt.
Claim 11
Dependent Claim
23 words
The invention of claim 9 additionally including a circular joint positioned between said fixed portion of said container and said rotatably mounted skirt.
References Cited (Backward Citations)
US1298766A
Cited
US1639370A
Cited
US2409619A
Cited
US3203599A
Cited
US3402918A
Cited
US3648896A
Cited
US3669076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |