Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7429158 | Expandable implement attachment An expandable implement attachment selectively connectable to a vehicle and having a frame assembly, a first bucket member laterally fixed to the frame assembly and a second bucket member laterally moveable relative to the frame assembly to provide a bucket with an ... | 09/30/2008 |
| 7234910 | Bucket for pin grabber coupler A bucket has a pair of longitudinally parallel and spaced apart pins for attaching to a pin grabber quick coupler. The pins may require removal from the bucket for repair or replacement if the pins are damaged. One or more windows are formed in the side of the bucke... | 06/26/2007 |
| 7191553 | Ditch digging bucket A one-pass bucket for digging a ditch by moving the bucket with its curved end down longitudinally of the proposed ditch, wherein the bucket includes a top wall, a bottom wall, a rear wall and a side wall diverging forwardly from the rear wall to an open front end o... | 03/20/2007 |
| 7147425 | Convertible compact loader and excavator A loader excavator is described that is operable in an excavation mode or in a loader mode. The loader excavator comprises a main boom and a dipper boom, wherein a loader bucket or an excavator bucket can be selectively utilized in accordance with user preference. | 12/12/2006 |
| 7075338 | Light emitting element driving circuit with current mirror circuit A light emitting element driving circuit for supplying driving current I2 to a light emitting element 10 connected to one line 2 of a current mirror circuit 12 is equipped with a pulse generating circuit 20 connected to the other line ... | 07/11/2006 |
| 7066682 | Vehicles and methods for soil compaction and loading Vehicles and methods provide for a single vehicle that has both loading ability to grade and otherwise move dirt while also having the ability to compact soil. One or more compaction wheels are included on a vehicle such as a skid steer loader. Wiper bars are also i... | 06/27/2006 |
| 7046612 | Drive current supply circuit with current mirror A drive current supply circuit is provided in which the speed of rise of the drive current to a laser diode is increased. In a drive current supply circuit for supplying drive current I to load 50 connected with the line 1R of two parallel lines 1 | 05/16/2006 |
| 6994513 | Variable width backhoe bucket A variable width backhoe bucket having a width that is reversibly adjustable between a minimum value and a maximum value, comprising: a middle shell, flanking first and second side shells, and a constrained guidance system. The middle shell has a curved bottom, firs... | 02/07/2006 |
| 6923285 | Attachment control device The present invention provides an attachment for use with a power machine. An attachment control device includes a controller, such as a microprocessor, a microcontroller or other digital computer which senses the type of attachment and controls power to the attachm... | 08/02/2005 |
| 6722505 | Rotary adjustable dirt/sand/rock separator Aggregate mixtures such as dirt, sand, rock, concrete, etc. are separated into piles according to size by continuous agitation of the mixture and by gravitational and centrifugal forces exerted thereon. A container for the material, such as the bucket of a backhoe, ... | 04/20/2004 |
| 6377872 | Apparatus and method for microwave imaging and excavation of objects A microwave imaging excavator for the detection, imaging and excavation of objects on or buried beneath the surface of the ground, such as metallic and dielectric land mines. A continuous wave stepped frequency ground penetrating radar signal is transmitt... | 04/23/2002 |
| 6341933 | Hinged scoop end-effector An end-effector comprises a circulating scoop that cooperates with a plate that lies in its arcuate path. The plate spans the arcuate gap present within the scoop and preferably may be contained within that gap. The plate may be positioned to provide a bu... | 01/29/2002 |
| 6308441 | Excavator A material handling vehicle is provided which includes a lower truck chassis and an upper material handling structure pivotally supported by the lower chassis, all functions of which vehicle are driven by a single engine. The material handling vehicle is ... | 10/30/2001 |
| 6246939 | Method and apparatus for controlling angles of working machine The invention provides a method and an apparatus for controlling angles of a working machine, which even unskilled operators can easily and efficiently perform in excavation and loading operation. For this purpose, the control apparatus includes an automa... | 06/12/2001 |
| 6219944 | Manual dozer A manual dozer comprising a frame having a front and a rear and wheels for supporting the frame and allowing the frame to roll, The frame includes a handle extending upwardly from the frame for pushing pulling and steering the frame. A container is mounte... | 04/24/2001 |
| 6186735 | Loader bucket construction for robot assembly A bucket for a front end loader is formed with a minimum number of parts so that it can easily be assembled held in fixtures and welded with robot welders. The bucket includes a unitary panel that forms a bottom wall and a rear wall, with a curved junctio... | 02/13/2001 |
| 6182384 | Wheeled grading bucket A tiltable bucket assembly having a working edge on the leading end of the bucket and a forward extending extension arms, a pair of support arms, a pair of first wheels, a pair of second wheels, a pair of bucket-rotational members, a bucket-pivoting membe... | 02/06/2001 |
| 6157889 | Load distribution system for haulage trucks Weight sensors coupled to the bed of a conventional haulage truck measure the weight applied to each tire strut as the truck is being loaded. Based on the weight applied to each strut, the exact position of the center of gravity of the load in the truck's... | 12/05/2000 |
| 5960571 | Earth mover with an elevator having chain tensioning mechanism An earth mover scraper combination having chain driven elevator drive sprockets for each of two chains which are mounted on plates that include pins extending into the frame of the elevator support. Two jacks are likewise inserted into the frame of the el... | 10/05/1999 |
| 5940997 | Hydraulic circuit system for hydraulic working machine A hydraulic circuit system includes a shuttle block, and shuttle valves are arranged and connected within the shuttle block. The maximum pressure in a predetermined operation signal pressure group selected from operation signal pressures generated by pilo... | 08/24/1999 |
| 5915914 | Loader bucket with spill guard A spill guard at the rear wall of the bucket of a loader is modified by providing a series of plates which are inclined to planes at right angles to the rear wall of the bucket at an angle of 45° to the planes and to the plane of the rear wall of the buc... | 06/29/1999 |
| 5898334 | Reduced output capacitance circuit for driving a grounded load in response to a stepped input A circuit for generating an output signal used for driving a grounded load is provided. The circuit provides an output signal without glitches or spikes. The circuit also outputs a drive signal with enhanced responsiveness in transitioning from one output... | 04/27/1999 |
| 5815958 | Excavator dipper latch assembly having removable tapered latch bar A latch assembly for an excavator dipper of the invention includes a latch bar slot having a first opening, a second opening and a side wall. An annular projection protrudes from the latch bar slot side wall and has an upper surface and a side surface. A ... | 10/06/1998 |
| 5782020 | Method and equipment for simultaneous excavation and land refill with minimum operating labor An excavator with a wireless controlled hopper-spreader allows a single operator to strip off topsoil and spread the stripped off soil more or less evenly after a mineable substance such as gravel is removed. The hopper-spreader uses about a fifty foot co... | 07/21/1998 |
| 5694710 | Hydraulically swung trenching shovel The invention relates to a hydraulically swung trenching shovel comprising a mounting part pivoted to the front end of an excavator shovel beam, on which mounting part the shovel may be pivoted by a hydraulic piston and cylinder unit around a pivot axis e... | 12/09/1997 |
| 5590482 | Excavator and earthen material excavator bucket apparatus An earthen material excavator includes, a) a base undercarriage comprising running gear to move the excavator over the ground; b) a slewing platform; c) a plurality of booms operatively connected to one another, one of the booms being operatively connecte... | 01/07/1997 |
| 5404660 | Mechanism for supporting an earthworking etc. tool A mechanism (22) for supporting an earthworking tool from a vehicle such as a front end-loader (21) includes: (i) a primary support structure (23) adapted to be pivotally attached, in a readily releasable manner, about a generally upright, slewing axis (2... | 04/11/1995 |
| 5353531 | Ditch digging apparatus and method A bucket for digging a ditch by moving the bucket longitudinally of the proposed ditch, rather than in the usual transverse direction, includes a top wall, a bottom wall, a rear wall and a pair of side walls diverging forwardly from the rear wall to an op... | 10/11/1994 |
| 5252022 | Quick attachment assembly for loader implements An implement is coupled to the forward ends of a pair of loader lift arms through the medium of an attachment assembly comprising a pair of implement carriers respectively vertically pivotally mounted to the pair of loader lift arms by a connector rod tha... | 10/12/1993 |
| 5210964 | Spot mounder method and apparatus Method and apparatus for forming spot mounds used in assisting the germination and growth of tree seedlings in reforestation. A crawler moves forwardly while a digging blade connected to a frame is lowered into the soil in order to overturn the soil and f... | 05/18/1993 |
| 5147011 | Multi-purpose uni-body digging service vehicle A U-shaped multi-purpose uni-body digging service vehicle particularly adapted for transport and hauling comprising: a U-shaped frame having opposing sides and front ends connected by a front piece, and rear ends defining an open interior space in communc... | 09/15/1992 |
| 5004022 | Method and an arrangement for filling large sacks An arrangement for loading manageable material into containers or moulds with the aid of a mechanical shovel, and in particular to filling large sacks (10) intended for transporting or storing the matrial. The arrangement includes a mechanical shovel or s... | 04/02/1991 |
| 4945663 | Apparatus and method for forming and compacting planting mounds Planting mounds for afforestation purposes and the like are formed by an apparatus wherein a device having at least one mound-forming and compacting body is provided on a movable support arm or boom of a carrier vehicle adapted to be driven along the grou... | 08/07/1990 |
| 4333251 | Automatic bucket leveler An automatic bucket leveler is located on the underside of a bucket piston cylinder unit and is preset to stop the bucket in a horizontal or digging position. A trip bar is attached to the cylinder piston rod and moves with the cylinder piston rod through... | 06/08/1982 |
| 4015348 | Ripper assembly for tractor drawn scraper The invention is concerned with an improvement in a tractor drawn scraper wherein the scraper has a bowl with a back, a bottom, two sides and a forward cutting edge and a spreader forward of the cutting edge and supported by forward extensions of the bowl... | 04/05/1977 |
| 3961492 | Machine for and method of stemming blast holes In accordance with the invention, the stemming of blast holes, i.e. the covering (with peviously removed earth materials) of explosive charges placed in receiving boreholes drilled downwardly from generally horizontal surfaces in open-pit mines, involves ... | 06/08/1976 |
| 3959897 | Combination vibrating cutter head and crusher A cutter head, or excavating bucket; having a forward edge formed for penetrating earth formations, and which may be in the form of teeth; for earth working operations, especially for dredging operations, and the like, and having a vibrator mechanism asso... | 06/01/1976 |
