US3307683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor
Assignee: NOVA PRODUCTS Inc
•
Filing: 1964-08-07
•
Granted: 1967-03-07
•
Expires: 1984-08-07
Abstract
No abstract record available.
Inventors
- 👤 Pleasants Jack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:01
CPC Classifications
B; B65; B65G; B65G33/00; B65G2812/00; B65G2812/05; B65G2812/0505; B65G2812/0511; B65G2812/0516; B65G2812/0522; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A CONVEYOR COMPRISING: AN ENCLOSED CASING; A SPIRAL SHAPED CONVEYING ELEMENT DISPOSED IN THE CASING, SAID CONVEYING ELEMENT BEING A FLATTENED COIL SPRING WHEREIN ADJACENT COILS ARE ANGULARLY OFFSET THE SPRING AS A WHOLE BEING FORMED IN THE SHAPE OF A SPIRAL; AND MEANS TO IMPART ROTARY MOTION TO SAID CONVEYING ELEMENT TO ADVANCE MATERIAL THROUGH THE CASING.
Claim 2
Dependent Claim
58 words
A CONVEYOR COMPRISING: AN ENCLOSED CASING; A SPIRAL SHAPED CONVEYING ELEMENT DISPOSED IN THE CASING, SAID CONVEYING ELEMENT BEING A FLATTENED COIL SPRING WHEREIN ADJACENT COILS ARE ANGULARLY OFFSET THE SPRING AS A WHOLE BEING FORMED IN THE SHAPE OF A SPIRAL; AND MEANS TO IMPART ROTARY MOTION TO SAID CONVEYING ELEMENT TO ADVANCE MATERIAL THROUGH THE CASING.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |