US3418790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary cutters with equal angular velocities
Assignee: LILLISTON IMPLEMENT CO
•
Filing: 1966-05-04
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Granted: 1968-12-31
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Carroll J Whitfield
- 👤 Marvin L Nafziger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:46
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A ROTARY CUTTER HAVING A PAIR OF CUTTER SECTIONS, CUTTING MEANS MOUNTED ON EACH OF SAID SECTIONS, AND A SUPPORT MEMBER PIVOTALLY CONNECTING THE CUTTER SECTIONS, DRIVE MEANS MOUNTED ON SAID SUPPORT MEMBER AND OPERATIVELY CONNECTED TO EACH OF SAID CUTTING MEANS AND MEANS FOR MAINTAINING SAID SUPPORT MEMBER IN AN EQUAL ANGULAR RELATIONSHIP WITH RESPECT TO EACH OF SAID CUTTER SECTIONS SO AS TO MAINTAIN SUBSTANTIALLY EQUAL ROTATIONAL SPEEDS OF THE CUTTING MEANS.
Claim 2
Dependent Claim
75 words
IN A ROTARY CUTTER HAVING A PAIR OF CUTTER SECTIONS, CUTTING MEANS MOUNTED ON EACH OF SAID SECTIONS, AND A SUPPORT MEMBER PIVOTALLY CONNECTING THE CUTTER SECTIONS, DRIVE MEANS MOUNTED ON SAID SUPPORT MEMBER AND OPERATIVELY CONNECTED TO EACH OF SAID CUTTING MEANS AND MEANS FOR MAINTAINING SAID SUPPORT MEMBER IN AN EQUAL ANGULAR RELATIONSHIP WITH RESPECT TO EACH OF SAID CUTTER SECTIONS SO AS TO MAINTAIN SUBSTANTIALLY EQUAL ROTATIONAL SPEEDS OF THE CUTTING MEANS.
References Cited (Backward Citations)
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US3038286A
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US3115738A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-31 | 1972-07-01 | 1972-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-31 | 1976-07-01 | 1976-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-31 | 1980-07-01 | 1980-12-31 | $7700.00 | Window Closed / Lapsed |