US3685638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for guiding material to the entrance end of a screw conveyor having a rotatable screw and a conduit therefor
Assignee: Individual
•
Filing: 1971-01-29
•
Granted: 1972-08-22
•
Expires: 1991-01-29
Abstract
Abstract A device for guiding material to the entrance end of a conveyor comprising a screw which is rotatable about its longitudinal axis, and a stationary conduit therefor, consists of guide means rotatable about the longitudinal axis of the conveyor and coupled to the screw to rotate together with it.
Inventors
- 👤 Olle Lennart Siwersson
- 👤 Karl Gunnar Tell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:15
CPC Classifications
B; B65; B65G; B65G33/00; B65G33/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
86 words
A device for guiding material to the entrance end of a screw conveyor having a screw rotatable abouts it longitudinal axis and a stationary conduit, said device being of the type comprising at least one guide surface which is adapted to be rotated about the longitudinal axis of the screw conveyor, characterized in that the guide surface which is rotatable about the longitudinal axis of the screw conveyor is coupled to the screw to rOtate together with it and extends in a direction around said screw.
Claim 2
Independent Claim
86 words
A device for guiding material to the entrance end of a screw conveyor having a screw rotatable abouts it longitudinal axis and a stationary conduit, said device being of the type comprising at least one guide surface which is adapted to be rotated about the longitudinal axis of the screw conveyor, characterized in that the guide surface which is rotatable about the longitudinal axis of the screw conveyor is coupled to the screw to rOtate together with it and extends in a direction around said screw.
Claim 3
Dependent Claim
75 words
A device as claimed in claim 1, in which the guide surface consists of a stationary portion and a portion which is adapted to be rotated about the longitudinal axis of the screw conveyor, characterized in that inner guide means for the material which form the stationary guide surface are disposed between the plane of rotation of the outer guide surface portion which is rotatable about the longitudinal axis of the conveyor, and the screw.
Claim 4
Dependent Claim
19 words
A device as claimed in claim 2, characterized in that the inner guide means is secured in the conduit.
Claim 5
Dependent Claim
23 words
A device as claimed in claim 2, characterized in that the inner guide means is axially movably mounted with respect to the conduit.
References Cited (Backward Citations)
US2672347A
Cited
FR2000338A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |