In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 7588090 | Device for fixing blades to end plates which are rotationally integral with a rotary shaft and agricultural machine fitted with said device A device for fixing blades to plates which are rotationally integral with a rotary shaft and an agricultural machine fitted with the device. The device is characterized in that the flanks of each plate are cut and embodied such that they can receive in an interlocki... | 09/15/2009 |
| 7331402 | Device for attaching blades to rings connected to a rotating shaft for an agricultural machine A device for attaching blades to rings which are integrally connected to a rotating shaft for an agricultural machine. Each ring has several cutouts which can receive, by nesting support feet of flat segments, each segment bearing one or several blades, for mounting... | 02/19/2008 |
| 7308946 | Method of cleaning hole diggers and spot cultivators and hole digger cleaning device A travelling rolling digger (1) for sequential hole drilling or for producing sequential cultivated spots in soil. The travelling rolling digger (1) includes at least one drilling shaft which is rotatable by a drive mechanism about a longitudinal shaft... | 12/18/2007 |
| 7303025 | Motor-driven work apparatus A rotatably driveable work tool (1) of a motor-driven work apparatus has, at a front end (2, 3), an end plate (5, 6) lying perpendicularly to a rotational axis (4). The end plate (5, 6) has an outer diameter (DR) which i... | 12/04/2007 |
| 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 |
| 7168501 | Rotor system for ground milling or mine milling A rotor system for ground milling or mine milling comprising a base rotor provided with a number of support plates for accommodating tools. The tool support plates are detachably joined to the base rotor in the rotor system. A number of segments are radially arrange... | 01/30/2007 |
| 7143836 | Soil conditioning rotary reel for primary tillage operations A soil conditioning rotary reel for primary agricultural tillage implements is disclosed. The reel incorporates formed bars slightly spiraled along the length thereof that increase the overall strength of the reel and, because of the shape of the formed bars, suppor... | 12/05/2006 |
| 7100702 | Turf aerator A turf aerator is provided with three aligned aerator shafts having aerator devices mounted thereon. The innermost shaft is mounted in a frame for free-willing operation and the two outer shafts are each connected to a motor through selectively controlled hydraulic ... | 09/05/2006 |
| 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 |
| 7055617 | Soil aerator A soil aeration apparatus may include aeration tines that are actuated by a relatively compact gear system that reduces the size and weight of the apparatus. In addition, a soil aeration apparatus may operate without a centrally disposed support shaft, thus enabling... | 06/06/2006 |
| 7021393 | Landscape tiller An implement and method of assembly, wherein the implement comprises a housing having a first-side portion and a second-side portion, at least one element having a weight, the element being attached to the second-side portion of the housing and the weight of the ele... | 04/04/2006 |
| 6997268 | Trimmer A trimmer comprises a cutting head (1) housing a cutter (5), and a shaft (2) for supporting the cutting head. A large diameter wheel (8) is rotatably mounted with respect to the cutting head (1), and a motor is provided for driving... | 02/14/2006 |
| 6968906 | Electric tilling machine An electric tilling machine has a motor mounted on a machine body for rotationally driving a tilling shaft provided with tilling claws. A housing/cleaning box has an upper opening and is configured to receive therein the tilling shaft and tilling claws with the mach... | 11/29/2005 |
| 6926091 | Counter-rotating twin shaft system for gardening machines A gardening/landscaping utility machine having a counter-rotating twin shaft system that can perform multiple types of work required for gardening/landscaping, including tilling, trench-edging, weeding, brush cutting, snow removal and lawn mowing. These processes ca... | 08/09/2005 |
| 6865827 | Utility device having an improved rotatable drive mechanism A utility vehicle or other device for excavating soil or the like includes a utility mechanism, such as, e.g., a trencher, an auger or the like, with a motor-driven utility drum. In preferred embodiments, the motor is contained substantially entirely inside the drum... | 03/15/2005 |
| 6854526 | Walk-behind agricultural working machine A walk-behind working machine has a machine body and a wheel mounted on the machine body for undergoing rotation to move the walk-behind working machine along a ground surface. A cultivator device is mounted on the machine body for cultivating the ground. A working ... | 02/15/2005 |
| 6854525 | Tine system A tine assembly comprising a plurality of individual tines, each tine with an arcuate shaped base section and a blade section. Each tine is mountable between a pair of hubs suds that each blade extends radially outward therefrom. The base portions are clamped, secur... | 02/15/2005 |
| 6823947 | Walk-behind cultivator A walk-behind cultivator has a body, at least one pair of first tine assemblies mounted on the body to undergo rotation about a rotational axis in a first direction of rotation, and at least one pair of second tine assemblies mounted to undergo rotation about the ro... | 11/30/2004 |
| 6820358 | Compact vehicle for composting manure storage under high-rise avian houses A compact self-propelled vehicle for composting windrows of compost material found in cramped confines has a low frame forming a central tunnel for mounting a flow-through conveyor. A front pick-up end has a central-flow auger system for attacking into the windrow e... | 11/23/2004 |
| 6810609 | Snow groomer having an improved variable geometry tiller assembly A snow tiller (10) suitable for grooming ski hills, trails, or other areas, provides an adjustable profile tiller assembly. The snow tiller (10) is preferably pulled by a tracked vehicle (12) and has a tiller assembly formed of a plurality of ti... | 11/02/2004 |
| 6779611 | Walk-behind working machine A walk-behind working machine includes a motive power source, right and left transmission shafts, and a clutch for transmitting motive power from the source to the shafts. The transmission shafts are disposed in alignment with their respective ends butting against e... | 08/24/2004 |
| 6766866 | Tiller A tiller includes an engine, a transmission mechanism, and a rotor shaft having tillage tines mounted thereon. The transmission mechanism transmits a motive power of the engine to the rotor shaft to thereby cause the tillage tines to perform a tilling operation. The... | 07/27/2004 |
| 6758283 | Aerator device An aerator is provided having a front axle, including a differential and a tine wheel assembly which may be raised from the ground during maneuvers of the aerator while power continues to be supplied to the front axle, and a tine wheel assembly is provided which all... | 07/06/2004 |
| 6708774 | Cultivator Driving worm provided on a transmission shaft, driven worm wheel provided on a cultivating shaft, main shaft portion of the transmission shaft and clutch are collectively accommodated in a transmission casing, which includes first and second bearings for preventing ... | 03/23/2004 |
| 6662880 | Traveling rolling digger for sequential hole drilling and for producing sequential cultivated spots in soil A traveling rolling digger for sequential hole drilling or for producing sequential cultivated spots in soil. The traveling rolling digger includes at least one drilling shaft which is rotatable by a drive mechanism about a longitudinal shaft axis and has... | 12/16/2003 |
| 6644167 | Method and arrangement for limiting the damage to a mine clearance vehicle in the event of large mine detonations The present invention relates to a method and an arrangement to mitigate damage to a rotary cultivator type mine clearer. In the event of detonations, triggered by the mine clearance tool, the present invention acts to mitigate damage to the mine-clearing... | 11/11/2003 |
| 6591520 | Centrifugal thrower-crusher for aggregates and other materials Centrifugal thrower-crusher device for arid matter and other materials having a revolvable inertia wheel (1) and mallets (2) diametrally matched on at least one face of the wheel inside a housing (3) with a front opening (8) at the side in which the malle... | 07/15/2003 |
| 6497294 | Soil conditioner implement A soil conditioner implement designed for operation in cooperation with a supporting skid steer vehicle, the skid steer vehicle being moveable over the soil to be conditioned and having a source of hydraulic fluid under pressure for transmission to the so... | 12/24/2002 |
| 6484811 | Mulching unit for use in mulching apparatus A mulching unit for a mulching apparatus includes at least one cutting assembly or hammer having a rotatable support element and two cutting elements spaced apart from one another by a predetermined gap that allows debris to pass between the cutting eleme... | 11/26/2002 |
| 6467550 | Hydraulic tiller assembly A tiller assembly includes a tine assembly that is rotatably connected to a tiller body and the tine assembly includes at least one tine for use in tilling associated soil. A hydraulic system is operatively connected to the tine assembly and includes a hy... | 10/22/2002 |
| 6367561 | Tine assembly for a cultivator A tine assembly for a cultivator includes a first tine member having a plurality of radially extending non-planar tines. At least two tines on each tine member differ in shape from the remaining tines. The tine assembly may include a second tine member wh... | 04/09/2002 |
| 6349775 | Means for controlling a driven soil working machine on the basis of information derived from a map A method and apparatus for obtaining optimal cultivation of a parcel of land. A soil working machine with drivable working members, such as a rotary harrow, is provided with soil working members which rotate about approximately vertically orientated axes,... | 02/26/2002 |
| 6347593 | Modular dethatcher and seeder A modular dethatcher and seeder includes a housing having a rear opening, a removable rear cover substantially closing the rear opening, and a plurality of tines driven by a motor to rotate about a shaft within the housing. When the device is to be used a... | 02/19/2002 |
| 6311782 | Apparatus for trimming and edging grass around a lawn sprinkler head An edging and trimming apparatus for a lawn sprinkler head includes an elongate rotary shaft carrying an annular rotary blade at a lower end thereof. The opposite upper end of the shaft is releasably interconnected to a rotary auger motor. The motor drive... | 11/06/2001 |
| 6273197 | Method and apparatus for a self-propelled ground aerator The present invention is a self-propelled ground aerating system. The system comprises, in general, a wheeled platform that has disposed thereon a power pack, a steering mechanism, a hopper for distributing materials, and a spiked drum. The spikes dispose... | 08/14/2001 |
| 6247539 | Cultivator implement with castellated cultivating protrusions and multi-implement, powered, cultivation system Implements for attaching to a hand-held, powered "Weed-Eater" type device to perform various work or chores (filament cutting, blade cutting, brushing, blowing, mixing, etc.). After disconnecting the device's original implement typically a spool of filame... | 06/19/2001 |
| 6182769 | Demining device including demining discs and impact devices and demining method utilizing the device A method for increasing effectiveness of mine clearance when clearing landmines. A vehicle-mounted, mechanically driven, rotary cultivator type demining tool is provided. The demining tool includes a horizontal shaft, a demining unit rotating around the h... | 02/06/2001 |
| 6164384 | Method for producing a plurality of cultivated spots for planting of trees and a rolling spot cultivator A method and apparatus for producing a plurality of spaced apart cultivated spots in soil. A spot cultivator (1) is moved across the soil in a direction in which the spaced apart cultivated spots are to be formed. The spot cultivator (1) includes at least... | 12/26/2000 |
| 6161625 | Equipment for digging ground without destructive excavation work Equipment for digging ground in urban areas includes a hinged support and maneuvering arm (3), an omnidirectional damping device (36), a vibration or oscillation generator (38), a motor (40) and a tool (28) which is made to rotate by the motor and provide... | 12/19/2000 |
| 6151811 | Retractable assembly for trenchers and walk-behind power units The present invention is a walk-behind power unit stabilizing system for use on portable trenchers and other equipment. The preferred application comprises a retractable wheel assembly mounted at the rear of a trencher where the invented device is allowed... | 11/28/2000 |