Patent US3285476A successfully refreshed from Google Patents.
US3285476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotatable inclined chute for handling sticky bulk material
Assignee: United States Steel Corp
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Filing: 1965-08-20
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Granted: 1966-11-15
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Expires: 1985-08-20
Abstract
No abstract record available.
Inventors
- 👤 Wilbur J Pellow
- 👤 Lawrence C Rosenquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:57
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/10; F27D2003/0085; F27D2003/0089
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A CHUTE CONSTRUCTION COMPRISING A HOLLOW TRUNCATED CONE, MEANS SUPPORTING SAID CONE FOR ROTATING ABOUT ITS CENTRAL AXIS, WITH THE SMALLER END OF THE CONE DIRECTED DOWNWARDLY, AND WITH THE CENTRAL AXIS OF THE CONE SLOPING FROM THE VERTICAL, DRIVE MEANS OPERATIVELY CONNECTED WITH SAID CONE FOR EFFECTING ROTATION THEREOF, FIXED SUPPORT MEANS OUTSIDE SAID CONE AT OPPOSITE ENDS THEREOF, AND A TENSIONED WIRE ROPE ATTACHED AT ITS ENDS TO SAID FIXED SUPPORT MEANS AND CONTACTING THE INSIDE SURFACE OF SAID CONE ALONG THE UPPERMOST LINE OF ITS CIRCUMFERENCE, SAID ROPE ACTING AS A SCRAPER TO REMOVE MATERIAL CLINGING TO THE INSIDE SURFACE OF THE CONE AND ALLOWING SUCH MATERIAL TO DROP GRAVITATIONALLY TOWARD THE CENTRAL AXIS OF THE CONE..
Claim 2
Dependent Claim
120 words
A CHUTE CONSTRUCTION COMPRISING A HOLLOW TRUNCATED CONE, MEANS SUPPORTING SAID CONE FOR ROTATING ABOUT ITS CENTRAL AXIS, WITH THE SMALLER END OF THE CONE DIRECTED DOWNWARDLY, AND WITH THE CENTRAL AXIS OF THE CONE SLOPING FROM THE VERTICAL, DRIVE MEANS OPERATIVELY CONNECTED WITH SAID CONE FOR EFFECTING ROTATION THEREOF, FIXED SUPPORT MEANS OUTSIDE SAID CONE AT OPPOSITE ENDS THEREOF, AND A TENSIONED WIRE ROPE ATTACHED AT ITS ENDS TO SAID FIXED SUPPORT MEANS AND CONTACTING THE INSIDE SURFACE OF SAID CONE ALONG THE UPPERMOST LINE OF ITS CIRCUMFERENCE, SAID ROPE ACTING AS A SCRAPER TO REMOVE MATERIAL CLINGING TO THE INSIDE SURFACE OF THE CONE AND ALLOWING SUCH MATERIAL TO DROP GRAVITATIONALLY TOWARD THE CENTRAL AXIS OF THE CONE..
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |