US3858733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for loading bulk materials
Assignee: IHI Corp
•
Filing: 1972-06-20
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Granted: 1975-01-07
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Expires: 1992-06-20
Abstract
Abstract A method for loading bulk materials is provided in which a telescopic chute and the pile of bulk materials are maintained within a predetermined range and the bulk materials are discharged while maintaining the volume in the telescopic chute in excess of a predetermined volume and the discharge of bulk materials is stopped when the volume of bulk materials in the telescopic chute is decreased less than a predetermined volume. In discharge operation, the dust rises only in the telescopic chute and may be collected. A telescopic chute is also provided which is best adapted to carry out the method of the present invention.
Inventors
- 👤 Akira Morioka
- 👤 Hiroshi Iwasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:53
CPC Classifications
B; B65; B65G; B65G69/00; B65G69/18; B65G69/185; B65G69/186; B65G47/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
94 words
A device for loading bulk materials comprising a flexible telescopic chute defined by inner and outer tubes relatively telescopically fitted one over the other,, means disposed in the lower portion of said telescopic chute in vertically spaced apart relation for detecting the upper and lower limit positions of the bulk materials in said telescopic chute and a driving device for pulling up said chute, said driving device being controlled by said detecting means whereby the bulk in said chute is maintained between the upper and lower limit positions while the bulk is being loaded.
Claim 2
Independent Claim
94 words
A device for loading bulk materials comprising a flexible telescopic chute defined by inner and outer tubes relatively telescopically fitted one over the other,, means disposed in the lower portion of said telescopic chute in vertically spaced apart relation for detecting the upper and lower limit positions of the bulk materials in said telescopic chute and a driving device for pulling up said chute, said driving device being controlled by said detecting means whereby the bulk in said chute is maintained between the upper and lower limit positions while the bulk is being loaded.
Claim 3
Dependent Claim
53 words
The device as claimed in claim 1 wherein there is further included a discharge valve fixed to the lower end of said telescopic chute and operatively coupled to said detecting means in such a manner that said discharge valve may be opened or closed in response to the signals from said detecting means.
Claim 4
Dependent Claim
38 words
The device as claimed in claim 2 wherein there is further included a dust collector disposed outside of and coupled to said telescopic chute through a flexible pipe for collecting the dust which rises in said telescopic chute.
Claim 5
Dependent Claim
76 words
The device as claimed in claim 2 wherein there is further included a discharge opening, said valve and said discharge opening being closed when the bulk remaining in the chute is lowered to the position of said detecting means for detecting the lower limit position, said valve and said discharge opening being opened when the remaining bulk rises to the position of said detecting means for detecting the upper limit position during the bulk loading operation.
Claim 6
Dependent Claim
42 words
The device as claimed in claim 1 wherein there is further included a pipe in communication with the interior of said chute proximate the upper end thereof and vacuum suction means for sucking the dust floating in said chute into said pipe.
Claim 7
Dependent Claim
26 words
The device in accordance with claim 1 wherein there is further included a flexible bellows interconnected between said telescoped tubes and capable of extending and contracting.
Claim 8
Dependent Claim
41 words
The device in accordance with claim 1 wherein there is further included a bellows fixed to the lower end of said telescopic chute so that the lower edge of said bellows is adapted to contact the pile of the bulk material.
Claim 9
Dependent Claim
59 words
The device in accordance with claim 1 wherein there is further included an emergency limit switch located in said chute in vertically spaced apart relation above said detecting means for detecting the upper limit portion, said switch being adapted to stop the supply of the bulk material when the material in sAid chute is above the upper limit position.
References Cited (Backward Citations)
US1021757A
Cited
US2713408A
Cited
US2737997A
Cited
US3241581A
Cited
US3376202A
Cited
US3594847A
Cited
US3707998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |