Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7216709 | Hydraulic fracturing using non-ionic surfactant gelling agent The present invention generally relates to a method for treating a subterranean formation with an aqueous viscoelastic treating fluid that an aqueous base fluid and one or more non-ionic amido amine oxide surfactant gelling agents. The treatment method comprises inj... | 05/15/2007 |
| 7174829 | Adjustable piston pump An adjustable piston pump for displacement and extraction of remnant from soft sand and or soft soil includes a pump casing cylinder that is capped at one end and opens at the other end. It includes a handle fixed to the pump casing cylinder, a shaft rod, a shaft ro... | 02/13/2007 |
| 6418645 | Milling unit for the beating of snow-covered slopes A milling unit for the beating of snow-covered slopes consisting of a box-shaped structure comprising a central part to which two side parts are connected by hinging elements, in order to allow for oscillation. The structure has two hooking elements for i... | 07/16/2002 |
| 5690180 | Horizontal-axis cutter for soil cultivation A horizontal-axis cutter for soil cultivation of the type comprising a horizontal-axis rotor (2) fitted with a number of blades and a gear motor (4), connected on one side to the power take-off of the tractor and on the other to the rotor, in which the ge... | 11/25/1997 |
| 5373902 | Tiltable hood assembly for an earth working machine A hood assembly includes a hood member and an adjustable length stabilizing link. The stabilizing link is movable between a first position at which the link maintains a bottom surface of the hood member in a substantially parallel relationship with a grou... | 12/20/1994 |
| 5287933 | Hood support assembly for an earth working machine A hood support assembly (18) for controllably supporting a hood member (16) on an earth working machine (10) includes a support member (20) that is pivotally mounted, at each of two end portions (22,24) to the frame (12) of the machine. Arm members (26,28... | 02/22/1994 |
| 5067264 | Flexible rotary snow tiller The flexible tiller has a center and two end sections, each including a cutter bar, frame, apron and grooming bar. The two tiller end sections are connected flexibly to the ends of the center section by frame to frame hinges and by cutter to cutter univer... | 11/26/1991 |
| 4892154 | Ground-working apparatus with rotary tiller A ground-working implement which comprises a rotary tiller or like groundosening unit and a smoothing board located behind the tiller. Both the unit and the smoothing board are subdivided generally centrally and the sections are connected by a ball and h... | 01/09/1990 |
| 4819735 | Hand-operated lawn aerator A hand-operated lawn aerator which can be used to extract plugs of thatch and soil from a lawn. The device includes a long hollow tubular member having a cutting head at one end. The hollow tubular cutting head is driven into the ground with an operator's... | 04/11/1989 |
| 4775014 | Ground-working implement A ground-working implement for rotary field tilling or ice or snow-tending n ski slopes or the like which is drawn by a tractor or a tracked vehicle and which comprises a holder connected to the vehicle pendulously by a longitudinal beam which can be raise... | 10/04/1988 |
| 4669549 | Rake device for rotary cultivators A tiller cover assembly covering a rotary tiller unit is provided inside thereof with rake members arranged at a spacing along the width of cultivation for sieving lumps or blocks of soil carried around by the tiller unit. Each of the raker members is mad... | 06/02/1987 |
| 4616715 | Forest mattock with braked rotation system A rotation control system for the mattock (2) of a tuft-building forest mattock, whereby rotation of the mattock is adapted to be braked or stopped stepwise in a manner that each pick (3) in turn works a whole in the first stage, in the second stage the p... | 10/14/1986 |
| 4331204 | Tillage implement A tractor drawn tillage implement having a front hood, rippers, a rotary tiller and a row former, conditions tight adobe soil ready for planting in one pass. The front hood, having rock deflectors, protects the operator from airborne objects while contain... | 05/25/1982 |
| 4267891 | Soil cultivating machines A cultivating machine has groups of soil working tines that are mounted on an elongated support that is driven to rotate about a horizontal axis. The tines are mounted in spaced apart groups and guide members converge at the rear of the groups to form rid... | 05/19/1981 |
| 4256182 | Hammer plow A hammer plow is provided with a series of disks spaced along and rotatable with a sleeve that turns about an axle on a number of bearings located therebetween. Each of the disks has a plurality of hammers rotatably attached thereto, which are free to rot... | 03/17/1981 |
| 4240508 | Power-driven rotary ground working implement A ground working implement comprises a frame, a rotary ground working unit supported by the frame and rotatable about a horizontal axis, a transmission for the working unit, a cover assembly covering the working unit and including a movable cover, and a h... | 12/23/1980 |
| 4232746 | Soil cultivating implements A cultivating implement has rotatable soil working members that are driven about upwardly extending axes to work overlapping paths of soil. The cultivating members have downwardly extending tines. Neighboring members cooperate and are driven to turn in re... | 11/11/1980 |
| 4199030 | Method and apparatus for farming row crops A soil working implement for use in forming a raised soil bed is disclosed. The implement includes a carriage assembly and a plowing tool mounted for rotation on the carriage assembly. The plowing tool includes a cylindrical rim and an array of soil diggi... | 04/22/1980 |
| 4171725 | Rotary harrow Improvements in rotary harrows whereby an odd number of soil-working members are rotatably journalled thereon, the members having an even number on each side of a gear box located over one of the members, the gear box being in driving engagement with mech... | 10/23/1979 |
| 4151883 | Soil cultivating machines A cultivating machine has tines mounted on an elongated horizontal support that is driven to move the tines forwardly through the soil towards the normal direction of travel. The tines are in groups along the length of the support and each group has a num... | 05/01/1979 |
| 4088083 | Rotary harrow and attachments A tillage machine includes a main frame that supports rotary soil working tined members and various additional tools that can be detachably fastened to the main frame in combination with the rotary tined members to landscape in one pass. For primary use, ... | 05/09/1978 |
| 4073245 | Levee forming apparatus and method A towed levee forming apparatus and method of using for forming a dike or levee which is particularly suited for use with agriculture operations. The apparatus includes a plurality of laterally spaced digger means for forming corresponding ditches in the ... | 02/14/1978 |
| 4046202 | Cultivators A tractor drawn cultivator comprises a frame extending transversely to the direction of movement of the tractor. A plurality of spaced apart vertical axis rotary driven cultivator members comprising downwardly extending tines are supported from the frame.... | 09/06/1977 |
| 4044841 | Rotary tiller device adapted for chopping A device in the nature of a rotary tiller equipped for traveling through fields as well as uneven terrain, for effectively chopping up encountered clods, vegetation and debris, and mixing same with the soil. We utilize a framework in which either of two d... | 08/30/1977 |
| 4026225 | Machine for planting trees, shrubs and the like A horizontal frame coupled to a tractor is provided with a single disc mounted for rotation about a horizontal axis on the center line of the frame and driven by the power take off shaft of a tractor with the disc carrying a plurality of cutter teeth whic... | 05/31/1977 |
| 3995570 | Cultivators A cultivator has soil working blade members mounted on a horizontal shaft which is driven to rotate the members forwardly through the soil in the normal direction of travel. A baffle comprised of screen segments are mounted on the cultivator frame to part... | 12/07/1976 |
