Patents
Sitemap › A01 - Agriculture; Forestry; Animal husbandry; Hunting; Trapping; Fishing › A01B - Soil working in agriculture or forestry; Parts, details, or accessories of agricultural machines or implements, in general › A01B 23 - Elements, tools, or details of harrows
Patents for A01B 23 - Elements, tools, or details of harrows (673)
01/1995
01/03/1995CA1333761C Rotary hoe
11/1994
11/03/1994DE4409231A1 Disc harrow with level compensation
09/1994
09/29/1994WO1994021105A1 Flexible tooth with interchangeable elements for a ploughing apparatus
09/29/1994CA2155333A1 Flexible tooth with interchangeable elements for a ploughing apparatus
08/1994
08/09/1994US5335735 Cultivator shank assembly with cammed shank end receiver
07/1994
07/20/1994EP0606834A1 Device relating to a towable tractor tool
06/1994
06/29/1994EP0603474A1 Tines for harrow
03/1994
03/29/1994US5297637 Agricultural disc blade
12/1993
12/23/1993WO1993025064A1 Agricultural disc blade
12/07/1993US5267619 Disk harrow assembly
11/1993
11/09/1993US5259461 Cultivator sweep
11/09/1993US5259460 Device for working the ground
09/1993
09/28/1993US5248000 Harrowing device
08/1993
08/31/1993US5240080 Adjustable attachment for mounting a farming tool on a drawing vehicle
08/03/1993CA1320817C Method of assembling a disk
05/1993
05/18/1993CA1317812C Disk harrow standard for support beams of different cross sections
05/04/1993US5207279 Agricultural apparatus having vertically adjustable disc gang assemblies
03/1993
03/18/1993DE4134744A1 Spike harrow - consists of tools which can be replaced and rotated within the holders and has ability to adjust set angles
02/1993
02/04/1993WO1993001704A1 Flexible rotary harrow
01/1993
01/21/1993WO1993000790A1 Flexible rotating chain-harrow
01/05/1993US5176209 Cultivator sweep
12/1992
12/08/1992US5168936 Trailing harrow rotatable to an up-side-down storage position
11/1992
11/04/1992EP0511471A1 Device for adjustably mounting an agricultural element
10/1992
10/27/1992US5158145 Cultivator
08/1992
08/13/1992DE4103537A1 Implement for soil cultivation - has compensating device for optimum positioning
07/1992
07/28/1992US5133415 Cultivator shank assembly
07/28/1992CA1305628C Tool
04/1992
04/30/1992WO1992006580A1 Device for working the ground
04/30/1992CA2094236A1 Device for working the ground
04/22/1992EP0481538A1 Device for working the ground
04/16/1992DE4101185A1 Adjusting device for height of wheel on disc harrow - consists of flange attached to wheel axle which slides up or down against clap
02/1992
02/12/1992EP0470641A1 Harrowing device
12/1991
12/04/1991CN2089687U Multirpupose toothed harrow
11/1991
11/12/1991US5064001 Rotary soil working tool
11/09/1991CA2016414A1 Attachment system for ripper teeth and the like to a holder
08/1991
08/13/1991CA1287516C Banding knives and the like
07/1991
07/25/1991WO1991010350A1 Agricultural weeding apparatus
07/02/1991US5027907 Integral wire element
05/1991
05/22/1991EP0428198A2 Device for working the ground
05/02/1991WO1991005458A1 Device for working the ground
05/02/1991CA2067749A1 Device for working the ground
04/1991
04/16/1991US5007484 Method and apparatus for changing cultivator plow blades
04/11/1991DE3932512A1 Vibrating harrow with easily fitted tines - has U-shaped longitudinal supports fitted with arms vertical
03/1991
03/19/1991US5000270 Tool assembly
02/1991
02/12/1991US4991660 Rolling hoe
01/1991
01/02/1991EP0406140A1 Agricultural machine with telescopic rotor-carrying arms
11/1990
11/20/1990US4971154 Harrow assembly
10/1990
10/10/1990EP0391821A1 Soil working machine with improved frame
08/1990
08/01/1990CN2059787U Wave-shaped spider gear harrow disc
07/1990
07/19/1990DE3906503C1 Soil-working appliance
07/05/1990DE3900100A1 Harrow
07/03/1990CA1271081A1 Replacement tips for spring harrows
03/1990
03/22/1990WO1989008976A3 Apparatus for cultivating rice and other crops
03/14/1990EP0358014A2 Rolling cultivator
01/1990
01/30/1990US4896730 Apparatus for cultivating rice and other crops
11/1989
11/29/1989EP0343348A2 Apparatus and method for cultivating rice and other crops
11/23/1989DE3832099A1 Scheibenblatt fuer scheibeneggen Disc harrow disc blade for
10/1989
10/05/1989WO1989008976A2 Apparatus for cultivating rice and other crops
09/1989
09/13/1989EP0332238A2 A soil cultivating machine
07/1989
07/27/1989DE3801783A1 Implement carriers, resiliently arranged individually or severally in variously designed appliance frames of agricultural soil-working appliances, for the reception and mounting of variously designed implements which serve with their end engaging into the soil for the working of agricultural soils
07/04/1989US4844173 Method of assembling a disk
07/04/1989CA1256736A1 Tillage tool
06/1989
06/27/1989US4842077 Disk harrow standard for support beams of different cross sections
05/1989
05/24/1989EP0316728A1 Reciprocating harrow with elastic mounting of the tines
04/1989
04/24/1989EP0311630A4 Prickle chain.
04/19/1989EP0311630A1 Prickle chain
04/04/1989US4817729 Hinged cultivator frame
01/1989
01/18/1989CN2030795U Harrow mounted on plough driven by machine or horse
12/1988
12/28/1988CA1247448A Framework for ground working implement
12/21/1988CN88203469U Combined multi-function agricultural machine
12/20/1988CA1247163A1 Disk blade scraper
09/1988
09/13/1988US4770252 Harrow
07/1988
07/05/1988US4754816 Overcap point for tillage tool
05/1988
05/24/1988CA1237014A1 Hinged cultivator frame
03/1988
03/09/1988EP0258644A1 Reciprocating harrow
03/03/1988DE3629847A1 Vibrating harrow
03/03/1988DE3628910A1 Tine for ground-working appliances with a wing coulter
02/1988
02/11/1988WO1988000792A1 Rotary tyne assembly
01/1988
01/14/1988WO1988000002A1 Prickle chain
01/05/1988US4716971 Tillage implement
09/1987
09/16/1987EP0219515A4 Improved draught frame.
09/16/1987CN86202575U Combined multipurpose manual tool
08/1987
08/11/1987US4685524 Reciprocating harrow with parker
06/1987
06/30/1987US4676321 Framework for ground working implement
06/10/1987EP0224708A2 Tools for a soil working machine
06/02/1987US4669550 Rotary scraper for planter disks
05/1987
05/07/1987DE3634778A1 Harrow supporting frame
04/1987
04/29/1987EP0219515A1 Improved draught frame
04/28/1987CA1220965A1 Flexible tine harrow for the preparation of seed beds
04/07/1987CA1220066A1 Leaf spring shank assembly
03/1987
03/11/1987EP0213579A2 Agricultural implement with a frame and a tool holder
01/1987
01/02/1987DE3540562C1 Agricultural ground-working appliance
12/1986
12/02/1986US4625810 Tillage tool
10/1986
10/14/1986CA1212568A1 Shank clamp
10/09/1986WO1986005653A1 Improved draught frame
08/1986
08/26/1986US4607706 Sectional disc assembly for ground-working implements
08/20/1986EP0191412A1 Spring tine and method of manufacturing it
08/05/1986US4603746 Disk blade scraper
05/1986
05/27/1986US4591003 Offset harrow
05/20/1986US4589497 Spring tooth harrow, and spring tooth and tooth clip for a harrow
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