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| Number | Title | Issue Date |
| 7293612 | Walk aerator with ground following coring head A walk aerator comprises a frame supported by a plurality of ground engaging wheels, the frame carrying a coring head having a plurality of side-by-side tine assemblies. The wheels define a wheelbase which is substantially equal to or less than the width of a coring... | 11/13/2007 |
| 7096969 | Walk aerator with inboard wheels A walk aerator comprises a frame supported by a plurality of ground engaging wheels, the frame carrying a coring head having a plurality of side-by-side tine assemblies. The wheels define a wheelbase which is substantially equal to or less than the width of a coring... | 08/29/2006 |
| 6561282 | Aeration machine An aeration machine 10 comprising a drive mechanism 16 connected to sets of tines 18 by a vibration absorbing linkage arrangement 34. The arrangement 34 enables the tines 18 to remain vertical when extending into the ground thereby avoiding elongation of ... | 05/13/2003 |
| 6041869 | Turf aerator with constantly vertical tines Turf aerator having a crank and crank arms which present a parallelogram for supporting the aerator assembly, including the aerating tines.... | 03/28/2000 |
| 5868206 | Aeration tool and machine A turf aerating device and machine including a turf aerating device comprising a base platform having a plurality of star-shaped spikes removably mounted therein in perpendicular orientation with respect to the base platform surface so that the spikes ver... | 02/09/1999 |
| 5794708 | Triangular cross section trenching apparatus for edging A sod cutting machine in combination with turf cutting mechanism for cutting a longitudinally elongated trench in turf that has a trench bottom transversely inclined relative to the slope of the soil transverse to the direction of the trench elongation. T... | 08/18/1998 |
| 5730225 | Power cultivating device with blades actuated with mirrored acuator motion A power cultivator including a power source, a shaft and a cultivating head having a pair of cultivating blades is described. The cultivating head includes an assembly that opens and closes the blades using a mirrored arcuate motion. The cultivating head ... | 03/24/1998 |
| 5709272 | Turf aeration device A turf aeration device is provided, comprising a wheeled frame having a journalled drive shaft, wherein the frame is attachable to a pulling vehicle having a power take-off capability. Balanced chain and sprocket assemblies are used to transfer power from... | 01/20/1998 |
| 5697453 | Subsurface cutting tool A subsurface weed tool which makes use of a variety of different detachable blade attachments to cut the roots of and other plants. The tool can be provided with a variety of different attachments, permitting it to be used for other purposes such as aerat... | 12/16/1997 |
| 5441116 | Multiple purpose agricultural power tool A multiple purpose agricultural power tool is provided which consists of a removable cover to fit over an open top of a housing, a wheel assembly which is rotatable and mounted to the housing, so that it can travel along the ground and a pair of legs affi... | 08/15/1995 |
| 4626032 | Rock ditcher Apparatus for excavating hard soils comprising support means, an endless chain capable of movement relative to said support means, drive means for moving said endless chain, means integral with said endless chain operable to contact said hard soils, and m... | 12/02/1986 |
| 4614239 | Driller for use in rice field This driller for use in a rice field comprises attaching a vertically moving supporting frame to a guide frame which is connected with a tractor and is raised and lower by a first vertically movable mechanism; connecting a first transfer mechanism mounted... | 09/30/1986 |
