Patent US3452824A successfully refreshed from Google Patents.
US3452824A
Expired / Lapsed
US
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Oscillating harrows
Assignee: AGNES J CARLSON
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Filing: 1964-10-02
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Granted: 1969-07-01
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Expires: 1984-10-02
Abstract
No abstract record available.
Inventors
- 👤 Elmer Carlson
- 👤 Agnes J Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:51
CPC Classifications
A; A01; A01B; A01B19/00; A01B19/02; A01B19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A CULTIVATING APPARATUS COMPRISING, IN COMBINATION; A HAULING FRAME; A PLURALITY OF CIRCULAR DRAGS, EACH CONSISTING OF A PLURALITY OF INTERCONNECTED CONCENTRIC RINGS HAVING CULTIVATING TEETH; A RECIRPOCATING MECHANISM MOUNTED ON THE FRAME AND OPERABLE INDEPENDENTLY OF MOVEMENT OF THE FRAME; A PAIR OF SPACED FLEXIBLE CHAINS CONNECTING THE OUTSIDE RING OF ONE OF THE DRAGS IN THE SAID PLURALITY OF DRAGS TO THE SAID RECIPROCATING MECHANISM WHEREBY OPERATION OF THE RECIPROCATING MECHANISM WILL IMPART ROTARY RECIPROCATING MOTION TO THE SAID ONE DRAG: FLEXIBLE CHAIN CONNECTIONS CONNECTING THE OUTSIDE RING OF EACH OF THE REMAINING DRAGS OF THE SAID HAULING FRAME; FLEXIBLE CHAIN CONNECTIONS CONNECTING THE OUTSIDE RING OF THE SAID ONE DRAG TO THE SAID OUTSIDE RING IN EACH OF THE SAID REMAINING DRAGS WHEREBY ROTATARY RECIPROCATING MOTION OF SAID ONE DRAG WILL IMPART ROTARY RECIPROCATING MOTION OF THE SAID REMAINING DRAGS.
Claim 2
Dependent Claim
143 words
A CULTIVATING APPARATUS COMPRISING, IN COMBINATION; A HAULING FRAME; A PLURALITY OF CIRCULAR DRAGS, EACH CONSISTING OF A PLURALITY OF INTERCONNECTED CONCENTRIC RINGS HAVING CULTIVATING TEETH; A RECIRPOCATING MECHANISM MOUNTED ON THE FRAME AND OPERABLE INDEPENDENTLY OF MOVEMENT OF THE FRAME; A PAIR OF SPACED FLEXIBLE CHAINS CONNECTING THE OUTSIDE RING OF ONE OF THE DRAGS IN THE SAID PLURALITY OF DRAGS TO THE SAID RECIPROCATING MECHANISM WHEREBY OPERATION OF THE RECIPROCATING MECHANISM WILL IMPART ROTARY RECIPROCATING MOTION TO THE SAID ONE DRAG: FLEXIBLE CHAIN CONNECTIONS CONNECTING THE OUTSIDE RING OF EACH OF THE REMAINING DRAGS OF THE SAID HAULING FRAME; FLEXIBLE CHAIN CONNECTIONS CONNECTING THE OUTSIDE RING OF THE SAID ONE DRAG TO THE SAID OUTSIDE RING IN EACH OF THE SAID REMAINING DRAGS WHEREBY ROTATARY RECIPROCATING MOTION OF SAID ONE DRAG WILL IMPART ROTARY RECIPROCATING MOTION OF THE SAID REMAINING DRAGS.
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) | 1972-06-30 | 1972-12-30 | 1973-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-30 | 1976-12-30 | 1977-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-30 | 1980-12-30 | 1981-07-01 | $7700.00 | Window Closed / Lapsed |