Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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 |
| 7040079 | Rake with four-wheel stabilizing system A rake has two side members attached perpendicularly to the rake so as to form an H-shaped frame system. A swivelable wheel is mounted at each corner of the frame. The frame fully stabilizes the rake in a position approximately level with a ground surface as the rak... | 05/09/2006 |
| 7036604 | Structure for converting an integral implement to a drawn type A forward acting wheel arm for a drawn hitch includes a pivot point directly below the rear rank of the machine frame, and the wheels are rotated directly in front of the front rank during field operation. For transport, the wheels rotate below the front rank to min... | 05/02/2006 |
| 6912832 | Mower suspension A suspension system for a tractor-drawn mower used for crops for agricultural purposes is made up of parallel links, connected at a first end to a frame and to a mowing unit at a second end. A torsion spring assembly, similar to that used for torsion axles, is used ... | 07/05/2005 |
| 6845824 | Air assisted loading bucket scraper and air assisted loading methods Device and methods for air assisted loading of soil in an earth moving apparatus are disclosed. One aspect of a device includes a source of a current of air and at least one conduit for directing the current of air towards soil moved by the earth moving apparatus. T... | 01/25/2005 |
| 6745849 | Towed implement A towed, agricultural implement includes an undercarriage supported on ground wheels that are attached to the undercarriage by trailing support arms. An adjusting motor is coupled between the undercarriage and a transverse torsion rod having its opposite ends couple... | 06/08/2004 |
| 6684962 | Folding agricultural implement A folding agricultural implement is disclosed having a frame including an inner section, a pair of intermediate sections, and a pair of end sections. The inner section and the end sections of the frame are equipped with lift wheel assemblies including a g... | 02/03/2004 |
| 6679339 | Implement lift and level system with a front mounted direct coupled rockshaft A rockshaft is mounted over the front rank of the implement frame and is operated by cylinders located at opposite ends of the rockshaft connected to lift arms extending radially adjacent bearing mounts. Fore-and-aft extending links aligned with the lift ... | 01/20/2004 |
| 6616167 | Towed implement A towed implement is provided with ground support wheels mounted to its chassis by trailing wheel support arms and respective suspensions including lift cylinders with which are associated damping devices that operate in such a way as to prevent damage to... | 09/09/2003 |
| 6401832 | Agricultural implement lift wheel structure Lift wheel structure for an implement includes four bar linkage having a curved lower link connected to the frame closely adjacent a first tool-carrying rank. A caster wheel is supported at the forward end of the linkage for castering in an accommodation ... | 06/11/2002 |
| 6374923 | Folding frame implement A folding tool bar implement converts from a transversely extending operating configuration to a longitudinally extending transport configuration. The implement includes a rotating rockshaft supported by a wheel assembly at each opposing end thereof. The ... | 04/23/2002 |
| 6152240 | Adjustable-width attachment for agricultural machines Agricultural machine are generally equipped attachments, such as pick-up drums or cutting attachments. Generally, the width of the attachment is greater than that of the main machine or tractor. Because the agricultural machines travel in road traffic, th... | 11/28/2000 |
| 6003616 | Wheel arm assembly interchangeable between walking beam and straight tandem configurations A wheel arm assembly for an implement includes a common wheel arm for single wheel, straight tandem wheel, or walking beam configurations. In the straight tandem configuration, a pair of spindles are supported in corresponding bushings at the end of the w... | 12/21/1999 |
| 5829537 | Clay court scarifier A clay surface scarifier includes a portable frame with a first axle and a second axle rotationally connected thereto. At least one scarifying blade, having a cutting edge orthogonal to the first axis, is attached to the first axle and rotatable therewith... | 11/03/1998 |
| 4875421 | Seeding implement with a combination transport-drive wheel A seeding implement such as a minimum tillage drill including a pair of trailing transport wheels located inwardly of the outermost ends of the implement frame, one of the wheels being a combination transport-drive wheel mounted on a pivoting wheel frame ... | 10/24/1989 |
| 4409912 | Agronomic implement A cultivating implement include a soil working tool having an elongate substantially planar blade. The blade extends sidewardly and downwardly at an acute angle to the vertical so that its plane is substantially parallel to the direction of movement throu... | 10/18/1983 |
| 3952490 | Lawn rake A lawn rake consisting of an elongated frame bar carried for vertical tilting movement on a transverse axis by a pair of ground-engaging wheels, and having a handle at one end thereof and tines at its opposite end adapted to be moved into or out of engage... | 04/27/1976 |
