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US3245209A Expired / Lapsed US ⏱️ 0.0 years remaining

Rotary mower with means providing selective suction for its blades

Assignee: International Motors LLC
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Filing: 1964-11-20
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Granted: 1966-04-12
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Expires: 1984-11-20
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Abstract

Abstract 1,090,081. Mowing machines; couplings. INTERNATIONAL HARVESTER CO. Oct. 19, 1965 [Nov. 20, 1964], No. 44179/65. Heading A1F. A mower adapted for mid-mounting on a tractor comprises three rotating cutter blades, the outer ones of which cut material depressed by the front wheels of the tractor and are bent as at 123 and 124 to create an upwardly directed draft of air which is greater than the upward draft created by the bent parts 109 of the centre blade. The material cut by each blade is constrained to move along a tunnel 136 so that all the cut material is discharged through an outlet 148 at one side of the machine. Wheels 95 support the rear of the mower which is pivotally attached to the tractor by long beams 52. The front of the mower is pivotally supported from the beams 52 by links 77 which are interconnected by a torsion bar 85. The beams 52 are raised to lift the mower by means of a hand lever 71 rigidly secured to levers 67 which have a lost motion connection 96 with the beams whereby the mower can "float". The tractor engine drives the cutters via a belt 11.

Inventors

  • 👤 Donald C Marek

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 05:07
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/64; A01D34/66; A01D34/661; A01D2101/00; Y; Y10; Y10S; Y10S56/00; Y10S56/22

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 123 words
THE COMBINATION OF A TRACTOR HAVING WHEELS AND A MOWER SUPPORTED FROM THE TRACTOR BEHIND THE WHEELS WHEREBY THE WHEELS TRACK AND DEPRESS AHEAD OF THE MOWER MATERIAL TO BE CUT THEREBY, SAID MOWER HAVING A HOUSING INCLUDING AN UPPER PORTION HAVING A LATERALLY EXTENDING CLIPPING TUNNEL AND THREE CUTTERS ROTATABLY MOUNTED WITHIN THE HOUSING AND INCLUDING A CENTER CUTTER AND END CUTTERS, EACH HAVING A BLADE ROTATABLE IN A GENERALLY HORIZONTAL PLANE, SAID END CUTTERS DISPOSED IN FORE-AND-AFT ALIGNMENT WITH THE WHEELS DEVELOPING SAID TRACKS, AND SUCTION-CREATING MEANS ON THE BLADES OF EACH CUTTER PROVIDING A FLOW OF AIR LIFTING THE CROPS TO BE CUT, AND MEANS ON SAID END CUTTERS OF THE ORDER DEVELOPING GREATER UPWARD SUCTION THAN THE CENTER CUTTER.
Claim 2
Dependent Claim 123 words
THE COMBINATION OF A TRACTOR HAVING WHEELS AND A MOWER SUPPORTED FROM THE TRACTOR BEHIND THE WHEELS WHEREBY THE WHEELS TRACK AND DEPRESS AHEAD OF THE MOWER MATERIAL TO BE CUT THEREBY, SAID MOWER HAVING A HOUSING INCLUDING AN UPPER PORTION HAVING A LATERALLY EXTENDING CLIPPING TUNNEL AND THREE CUTTERS ROTATABLY MOUNTED WITHIN THE HOUSING AND INCLUDING A CENTER CUTTER AND END CUTTERS, EACH HAVING A BLADE ROTATABLE IN A GENERALLY HORIZONTAL PLANE, SAID END CUTTERS DISPOSED IN FORE-AND-AFT ALIGNMENT WITH THE WHEELS DEVELOPING SAID TRACKS, AND SUCTION-CREATING MEANS ON THE BLADES OF EACH CUTTER PROVIDING A FLOW OF AIR LIFTING THE CROPS TO BE CUT, AND MEANS ON SAID END CUTTERS OF THE ORDER DEVELOPING GREATER UPWARD SUCTION THAN THE CENTER CUTTER.

References Cited (Backward Citations)

US2898723A Cited
US3077065A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-04-11 1969-10-11 1970-04-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-04-11 1973-10-11 1974-04-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-04-11 1977-10-11 1978-04-12 $7700.00 Window Closed / Lapsed

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