Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6278955 | Method for automatically positioning the blade of a motor grader to a memory position A system and method for automatically adjusting the blade of a motor grader to an operator programmed blade position. The method includes the steps of: providing an electronic controller and blade controls having position sensors; monitoring the output of... | 08/21/2001 |
| 5287932 | Soil tilling device A soil tilling device that is pulled by a tractor vehicle comprises at least one tool holder that is supported at a supporting element and is rotatably drivable. At least two circular disk-shaped soil tilling tools are connected to a respective one of the... | 02/22/1994 |
| 5272861 | Rotary agricultural tool A rotary agricultural tool which may be incorporated in a number of different types of agricultural equipment, such as in a device for chopping up bulk material is disclosed. The rotary tool has an elongate cutter body mounted in a frame for rotation abou... | 12/28/1993 |
| 5193624 | Device for loosening sub soil The invention concerns a device (1), which is self-powered or can be connected-up to a vehicle, for loosening the sub-soil, the device having an array of piercing tools (13) mounted substantially perpendicular to the direction of travel of the device. Bef... | 03/16/1993 |
| 4936390 | Tool apparatus with tool attached to end of outrigger arm A three-point hitch mounted in-row tiller has a conventional three-point hitch mounted frame member with an outrigger arm pivotally mounted to the frame member in a manner that accommodates pivotal movement of the outrigger in relation to the frame member... | 06/26/1990 |
| 4805704 | Rotary tilling device A rotary tilling device has a cutting device having a plurality of cutters each of which is rotatably mounted on a supporting member. The cutter has a vertical portion and a lateral portion at an end of the vertical portion and has edges on both sides of ... | 02/21/1989 |
| 4804047 | Rotary mower and tilling device A rotary tilling device has a cutting device having a plurality of cutters each of which is rotatably mounted by a bolt on a supporting member at a base end thereof. The cutter has a vertical portion and a lateral portion at an end of the vertical portion... | 02/14/1989 |
| 4778012 | Rotary tilling and grass cutting device A rotary tiling device has a cutting device having a plurality of cutters each of which is mounted on a supporting member at a base end thereof in such a manner that the cutter is rotatable about a first center. The cutter has a vertical portion and a lat... | 10/18/1988 |
| 4706761 | Tilling machine with pivotal bi-directional operative tines A tine assembly for use with a rotary tiller comprising a selectively rotatable tine shaft and a plurality of pivotally mounted tines. The tines each include stop surfaces associated with an innermost end of the tine whereby the tine pivots to one positio... | 11/17/1987 |
| 4697644 | Cultivator nail supporting structure There is provided a cultivator blade supporting structure. The structure comprises at least one cultivator blade comprising a shank and a blade portion; at least one blade holder having a hollow sleeve for removably receiving the shank of the cultivator b... | 10/06/1987 |
| 4615395 | Reversible rotary cultivating apparatus Cultivating tines, each having opposite cutting edge portions, are pivotably supported by mount brackets on a tine shaft reversibly rotatable about a horizontal lateral axis. One of the edge portions of each tine is positionable in a position rearward wit... | 10/07/1986 |
| 4611669 | Tine assembly A tine assembly for a tiller, comprising a plate (12 or 20) mounted on a rotative shaft (11) and a plurality of tines (13 or 21) connected by a pivotal connection (14 or 22) to the plate so as to swing outwardly of the plate to engage the soil upon rotati... | 09/16/1986 |
| 4556113 | Structure for attaching tines for cultivation by reversible rotation in rotary cultivating apparatus Cultivating tines, each having opposite cutting edges, are pivotably supported by tine mount members on a tine shaft reversibly rotatable about a horizontal lateral axis. One of the cutting edges of the tine is retainable in a position rearward with respe... | 12/03/1985 |
| 4250969 | Mechanical hoe A cultivating attachment mounted on a tractor is driven by the power take-off drive of the tractor to simulate the customary action of a hoe when it is manually manipulated. The desired effect is achieved by providing a pair of ground engaging rotatable c... | 02/17/1981 |
| 4224999 | Soil cultivating implements An implement has rotatable cultivating members that are driven to rotate about upwardly extending axes. Each member includes a horizontal support arm and downwardly extending tools journalled at each end of the arm for free rotation. Along the length of e... | 09/30/1980 |
| 4207948 | Soil cultivating implements A soil cultivating implement has a row of soil working members that are driven to rotate about upwardly extending axes. Each member includes a tine carrier and tines either in pairs or singly, are journalled for free rotation about further upwardly extend... | 06/17/1980 |
| 4164258 | Soil cultivating implements A soil cultivating implement has soil working members mounted for rotation about corresponding upwardly extending axes. A soil working tool, preferably one or more tines, is connected to a support of the soil working member by at least one quick release f... | 08/14/1979 |
| 4144938 | Soil cultivating implements A cultivating implement has a row of soil working members that are driven to rotate about upwardly extending axes and work overlapping paths. The working members each have freely rotatable tools which turn about further upwardly extending axes responsive ... | 03/20/1979 |
| 4127177 | Soil cultivating implements An implement has soil working members mounted in a row that extends transverse to the direction of travel. Each member includes a horizontal support secured to an upwardly extending shaft that is driven and a soil working tool at each opposite end of the ... | 11/28/1978 |
| 4106567 | Soil cultivating implements A cultivating implement has cultivating members that are driven to rotate about a first upwardly extending axis. Each cultivating member preferably has three working members, that are freely rotatable about respective second upwardly extending axes, and d... | 08/15/1978 |
| 4055221 | Soil cultivating implements A soil-cultivating implement has soil-working members mounted for rotation about corresponding upwardly extending axes. A soil-working tool, preferably one or more tines, is connected to a support of the soil-working member by at least one quick release f... | 10/25/1977 |
| 4051903 | Soil cultivating machines A cultivating machine has one or more working members that are driven to rotate about upwardly extending axes. Each working member is connected to a drive transmission to turn and, spaced apart soil working members mounted for free rotation about respecti... | 10/04/1977 |
| 4050519 | Soil cultivating machines A soil cultivating machine has soil working members that are driven about upwardly extending axes. Each working member has radial arms and a tined cultivating rotor is pivotably connected to the outer end of each arm. Each cultivating rotor is freely rota... | 09/27/1977 |
| 4044839 | Soil cultivating machines A soil cultivating machine has side-by-side working members mounted on upwardly extending shafts that extend slightly forward with respect to the direction of travel. Each working member includes radial arms and at the outer end of each arm a tool, such a... | 08/30/1977 |
| 4029154 | Soil cultivating machines A soil cultivating machine has a cultivating member that is driven to rotate about a support that defines a horizontal axis extending transverse to the direction of travel. Radial arms fastened to brackets along the length of the support in helical rows m... | 06/14/1977 |
| 4026364 | Soil cultivating machines A cultivating machine has an elongated cultivating member that is rotatably mounted to turn about a horizontal axis that extends transverse to the direction of normal travel. A plurality of tined soil cultivating means is mounted on a support shaft of the... | 05/31/1977 |
