US Patent No: 8,176,993

Number of patents in Portfolio can not be more than 2000

Ripper plough for soil tillage

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ALSO PUBLISHED AS: 20080257576
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

A ripper plough for soil tillage includes a body having an upper mounting attachment end, a lower soil engaging end, a leading edge, a trailing edge, and opposed sides. A ploughshare support extends outwardly from the body from the leading edge toward the trailing edge at a plough angle of between 40 degrees and 55 degrees and extends outwardly and downwardly relative to the body at a thrust angle of between 40 degrees and 50 degrees. Ploughshares are mounted on the ploughshare support. The ploughshares have a length between a leading edge and a trailing edge of at least 1.5 feet and are spaced apart at the trailing edge by at least two feet, to provide an average lift angle of upward lift of between 10 degrees and 15 degrees.

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First Claim

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Patent Owner(s)

  • Assignment data not available. Check USPTO

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
McNabb, David H Edmonton, CA 3 21

Cited Art

Patent Info (Count) # Cites Year
 
ALAMO GROUP INC. (2)
4,457,381 Stubble mulch sweep 14 1983
4,645,013 Agricultural sweep 4 1985
 
CNH AMERICA LLC (2)
5,540,288 Primary tillage unit with reduced disturbance of surface soil and residue 14 1995
6,276,462 Combination tillage equipment for providing a smooth finish 17 2000
 
DEERE & COMPANY (2)
4,275,792 Shovel with soil directing structure 4 1979
7,770,657 Multi-speed sweep having progressively aggressive, non-flat soil contacting surfaces 1 2004
 
CASE CORPORATION (1)
4,538,689 Subsoil plow point 46 1984
 
FARM INNOVATIONS PTY LTD., 4 DUFFY STREET, BAYSWATER, WESTERN AUSTRALIA, 6053, AUSTRALIA (1)
4,408,667 Agricultural shares 13 1981
 
FIDELITY STATE BANK (1)
5,415,236 Subsoiler having rearwardly disposed soil fracturing structure 10 1994
 
GREAT PLAINS MANUFACTURING, INCORPORATED (1)
5,040,616 Shank attachment 6 1990
 
HINIKER COMPANY (1)
4,461,355 Cultivator row unit with ridger/bedder implement 37 1982
 
PEABODY ENERGY CORPORATION (1)
4,850,434 Vibrating deep ripper 2 1988
 
PHARES & WILKINS MANUFACTURING, INC. (1)
5,215,150 Winged subsoil plow 2 1991
 
THE GOVERNORS OF THE UNIVERSITY OF ALBERTA (1)
5,050,685 Split bentleg plow 4 1990
 
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF AGRICULTURE (1)
7,086,184 Subsoiling grapple rake 2 2004
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (4)
4,207,952 Plow 4 1978
4,204,348 Ripper attachment for earth-working equipment 23 1978
5,373,904 Cultivator blade 1 1993
6,328,114 Frozen topsoil plow 4 2000

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Maintenance Fees

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7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 15, 2019
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