US3253697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pressure conveyor
Assignee: Rapids Standard Co Inc
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Filing: 1964-07-13
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Granted: 1966-05-31
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Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Good Maynard J De
- 👤 Clyde L Bowman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:16
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/26; B65G47/261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A CONVEYOR HAVING A CONVEYOR TRACK FOR TRANSPORTING ARTICLES AND A DRIVEN PROPELLING MEMBER FOR MOVING THE ARTICLES ALONG SAID TRACK; MEANS SUPPORTING SAID PROPELLING MEMBER IN BOTH RAISED AND LOWERED POSITIONS, THE PROPELLING FORCE OF SAID PROPELLING MEMBER WHEN SAID PROPELLING MEMBER IS IN RAISED POSITION BEING FRICTIONALLY TRANSMITTED TO THE ARTICLES AND NO PROPELLING FORCE BEING TRANSMITTED TO THE ARTICLES WHEN THE PROPELLING MEMBER IS IN LOWERED POSITION, SAID MEANS COMPRISING: A PLURALITY OF ELEMENTS ARRANGED AT SPACED INTERVALS ALONG THE LENGTH OF SAID CONVEYOR; EACH OF SAID ELEMENTS BEING ECCENTRIC IN CROSS SECTION WITH THE PORTION OF LEAST RADIUS FORMING A REST AREA; MEANS ROTATABLY MOUNTING SAID ELEMENTS AND STOP MEANS FOR HOLDING SAID ELEMENTS AGAINST ROTATION WITH SAID REST AREA POSITIONED UPWARDLY BENEATH SAID PROPELLING MEMBER AND SUPPORTING SAID PROPELLING MEMBER IN ITS LOWERED POSITION.
Claim 2
Dependent Claim
139 words
A CONVEYOR HAVING A CONVEYOR TRACK FOR TRANSPORTING ARTICLES AND A DRIVEN PROPELLING MEMBER FOR MOVING THE ARTICLES ALONG SAID TRACK; MEANS SUPPORTING SAID PROPELLING MEMBER IN BOTH RAISED AND LOWERED POSITIONS, THE PROPELLING FORCE OF SAID PROPELLING MEMBER WHEN SAID PROPELLING MEMBER IS IN RAISED POSITION BEING FRICTIONALLY TRANSMITTED TO THE ARTICLES AND NO PROPELLING FORCE BEING TRANSMITTED TO THE ARTICLES WHEN THE PROPELLING MEMBER IS IN LOWERED POSITION, SAID MEANS COMPRISING: A PLURALITY OF ELEMENTS ARRANGED AT SPACED INTERVALS ALONG THE LENGTH OF SAID CONVEYOR; EACH OF SAID ELEMENTS BEING ECCENTRIC IN CROSS SECTION WITH THE PORTION OF LEAST RADIUS FORMING A REST AREA; MEANS ROTATABLY MOUNTING SAID ELEMENTS AND STOP MEANS FOR HOLDING SAID ELEMENTS AGAINST ROTATION WITH SAID REST AREA POSITIONED UPWARDLY BENEATH SAID PROPELLING MEMBER AND SUPPORTING SAID PROPELLING MEMBER IN ITS LOWERED POSITION.
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) | 1969-05-30 | 1969-11-29 | 1970-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-30 | 1973-11-29 | 1974-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-30 | 1977-11-29 | 1978-05-31 | $7700.00 | Window Closed / Lapsed |