US3555800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal hay rake
Assignee: Individual
•
Filing: 1968-05-21
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Granted: 1971-01-19
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Expires: 1988-05-21
Abstract
Abstract THE TINE OSCILLATING MECHANISM OF A CENTRIFUGAL HAY RAKE OSCILLATES THE TINES THROUGH AN ANGLE NOT EXCEEDING ABOUT 90 DEGREES, AND THE CARRIER WHICH SWEEPS THE TINES IN A CIRCULAR PATH PARALLEL TO THE GROUND MAY BE ROTATED IN EITHER DIRECTION. THE CAM FOLLOWER MECHANISM IS ADAPTED TO BE ALTERED FOR THE OPPOSITE ROTATION DIRECTIONS OF THE CARRIER SO THAT THE FULL OSCILLATION OF THE TINES IS USED IN RAKING AND THE TINES ALWAYS SWEEP BACKWARD WITH RESPECT TO THE CIRCULAR MOTION IMPARTED TO THEM BY THE CARRIER.
Inventors
- 👤 Walter W Stoll
- 👤 Hans Hofflinger
- 👤 Josef Heinen
- 👤 Florens Coester
- 👤 Albrecht Zuhlsdorff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:10
CPC Classifications
A; A01; A01D; A01D78/00; A01D78/08; A01D78/10; A01D78/12; A01D78/125
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |