US3592394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal belt thrower
Assignee: Individual
•
Filing: 1969-06-24
•
Granted: 1971-07-13
•
Expires: 1989-06-24
Abstract
Abstract This centrifugal belt thrower is provided with very flexible flaps supported in the discharge wheel and extended toward the belt by centrifugal force into contact with the material to be thrown. They flex when they encounter material on the belt, and the material is fed directly onto the belt entering through the periphery of the wheel.
Inventors
- 👤 Alfred D Sinden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:09
CPC Classifications
A; A01; A01C; A01C17/00; A01C17/003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A centrifugal belt thrower comprising an endless belt, a cylindrical discharge wheel having circular end walls and annular means thereon for supporting lateral margins of the belt, a first and second pulley positioned to hold the belt engaged with a substantial peripheral arc of the wheel, means for delivering particulate material through the peripheral margins of the wheel onto the belt between said end walls, means for propelling the wheel, pulley and belt at high velocity to cause the material on the belt to be centrifugally pressed against the belt and to be accelerated thereby and to be discharged as an airborne stream therefrom tangentially of the second pulley, and a plurality of angularly spaced-apart flexible flaps supported centrally of the wheel and freely oscillatable about such support with their outer margins radially extendable only by velocity-created centrifugal force into proximity with the belt and thereby exerting radial centrifugal pressure on said material thus pressing the material against the belt, but adapted to be retracted and swung freely rearwardLy out of radial position by encounter with material entering the wheel to permit passage of the material under said margins onto the belt.
Claim 2
Dependent Claim
192 words
A centrifugal belt thrower comprising an endless belt, a cylindrical discharge wheel having circular end walls and annular means thereon for supporting lateral margins of the belt, a first and second pulley positioned to hold the belt engaged with a substantial peripheral arc of the wheel, means for delivering particulate material through the peripheral margins of the wheel onto the belt between said end walls, means for propelling the wheel, pulley and belt at high velocity to cause the material on the belt to be centrifugally pressed against the belt and to be accelerated thereby and to be discharged as an airborne stream therefrom tangentially of the second pulley, and a plurality of angularly spaced-apart flexible flaps supported centrally of the wheel and freely oscillatable about such support with their outer margins radially extendable only by velocity-created centrifugal force into proximity with the belt and thereby exerting radial centrifugal pressure on said material thus pressing the material against the belt, but adapted to be retracted and swung freely rearwardLy out of radial position by encounter with material entering the wheel to permit passage of the material under said margins onto the belt.
Claim 3
Dependent Claim
57 words
Apparatus in accordance with claim 1, in which the entering stream of material at a lower lineal velocity than the belt and wheel velocity is guided to be interposed in the path of the rotating deflectable flaps causing the flaps to deflect rearwardly and angularly to ride on the entering stream while applying radial centrifugal force thereto.
Claim 4
Dependent Claim
22 words
Apparatus in accordance with claim 1, in which the flaps are made of material having the flexibility of rubber and rubberlike material.
Claim 5
Dependent Claim
38 words
Apparatus in accordance with claim 1, in which the flaps are so freely flexible as to exert no propelling force upon the material on the belt in absence of centrifugal force resulting from rapid rotation of the wheel.
Claim 6
Dependent Claim
34 words
Apparatus in accordance with claim 1, in which the material-delivering means includes side guide plates intersecting the wheel periphery and extending into the wheel between the vertical margins of the flaps and end walls.
Claim 7
Dependent Claim
46 words
Apparatus in accordance with claim 1, in which the belt, wheel and the deflectable flaps coact to admit a virtually uniform stream of material into the wheel at low velocity and discharge from the belt at high uniform velocity a virtually uniform stream of material normally.
Claim 8
Dependent Claim
25 words
Apparatus in accordance with claim 1, in which the flaps are reinforced along their outer edges parallel to the belt surface with heavy wear-resistant material.
Claim 9
Dependent Claim
53 words
Apparatus in accordance with claim 1, in which the flaps are so flexible that when at rest none maintains a radial position except whenever hanging vertically from its central support but all maintain radial positions at high velocity except when their edges encounter and are deflected rearwardly by material carried on the belt.
References Cited (Backward Citations)
GB149458A
Cited
US1782996A
Cited
US2622722A
Cited
US2868351A
Cited
US2964204A
Cited
FR1188954A
Cited
US3332534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |