Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7036623 | Control configuration for a utility vehicle having, e.g., an extendable utility boom In preferred embodiments, a utility vehicle (such as, e.g., a skid steer vehicle) has a multitude of potential control-to-function configurations (in some preferred embodiments, enabling about sixteen or more configurations). The control-to-function configurations c... | 05/02/2006 |
| 7013983 | Blade mounting structure of bulldozer A blade mounting structure of a bulldozer capable of increasing visibility of a blade is provided. For this purpose, in the blade mounting structure in which a left and a right portions of a blade (1) and a vehicle main body are connected with a set of left a... | 03/21/2006 |
| 6945335 | Oil-pressure controlling device for earthmoving machine An optimal pump flow for both dual tilt operations and single tilt operations is obtained at low cost without increasing the complexity of the device constitution. Where there is a wish to implement a dual tilt operation, a switch is selectively operated and, in acc... | 09/20/2005 |
| 6915730 | Spool-type hydraulic directional control valve having reduced cavitation A spool-type hydraulic directional control valve having improvements to reduce cavitation when the spool is in the float position. The flow area of a first passageway on the valve spool is appropriately sized to reduce the flow hydraulic fluid flow from the head end... | 07/12/2005 |
| 6840334 | Grader attachment for a skid steer A grader attachment for a skid steer utilizes the skid steer's auxiliary hydraulics to power an independent hydrostatic steering system for the grader and to control skid steer propulsion and grader blade position. The attachment mounts to the skid steer via a stand... | 01/11/2005 |
| 6785596 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 08/31/2004 |
| 6533044 | Lift control valve and feedback system A control valve and feedback system has three operating states including a lifting state, a neutral state, and a lowering state. The feedback control system comprises a cylinder, a pump, a reservoir for holding working fluid, and a control valve. The cont... | 03/18/2003 |
| 6481506 | Dual tilt control system for work vehicle To provide a dual tilt control system for a work vehicle, the system being capable of using a switching valve adapted to low pressure and low flow rates and left and right tilt cylinders of the same diameter and yielding large force during pitch and dual ... | 11/19/2002 |
| 6467553 | Hydraulic plow balancing system An apparatus for balancing a plow including a balance circuit, a pump fluidly connected to the balance circuit, and a load sensing valve bank fluidly connected to the balance circuit in the pump, wherein the balance circuit generally includes a two-positi... | 10/22/2002 |
| 6460625 | Slopeboard mounting linkage A slopeboard mounting linkage that raises a slopeboard while also raising and moving a fluid-powered cylinder toward the longitudinal center of the bulldozer to which the cylinder and slopeboard are attached. One end of a rod extending from the cylinder i... | 10/08/2002 |
| 6286606 | Method and apparatus for controlling a work implement A method and apparatus for controlling a work implement movably connected to a work machine. An implement controller automatically controls simultaneous first and second control modes of operation assigned to the work implement. A sensor applies a signal ... | 09/11/2001 |
| 6202014 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of featur... | 03/13/2001 |
| 6129158 | Hydraulic system for bulldozer An extensive torsional force exerted on a vehicle body frame due to an operation of blade lift cylinders can be avoided. Determination is made to identify an occurrence condition which causes a torsional force on a vehicle body frame due to an operation o... | 10/10/2000 |
| 6119054 | Method and device for controlling a construction machine A signal sending device 21 which stores therein proper data, such as an accelerator position and a pump output, concerning operating conditions, such as supply hydraulic pressure and flow rate, appropriate for a working attachment to be attached to the fr... | 09/12/2000 |
| 5996701 | Control method and system for construction machine An independent two pump system comprising an implement hydraulic pump and a steering hydraulic pump is described. The system has an inexpensive structure and the capability of preventing a construction machine from engine stalling without impairing fuel e... | 12/07/1999 |
| 5862868 | Bulldozer blade pitch control method and controller for the same A bulldozer blade (10) is automatically reset to a predetermined excavating pitch while the bulldozer (20) is traveling backwardly after it has completed an operation of excavating, carrying, or dumping earth. The bulldozer blade (10) can be set to an exc... | 01/26/1999 |
| 5682955 | Blade control system for an earthmoving blade A blade control system includes a directional control valve, a fluid regeneration valve and a selector valve for selectively controlling fluid flow between a pump and first and second hydraulic cylinders and between the cylinders. With the valves position... | 11/04/1997 |
| 5620053 | Blade apparatus and its control method in bulldozer A hydraulic drive system for the pitch cylinders (4A, 4B) of a bulldozer blade apparatus can include (a) main hydraulic pumps (30A, 30B) and an assistant hydraulic pump (31) to make up the assistant hydraulic circuit, (b) variable displacement hydraulic p... | 04/15/1997 |
| 5551518 | Tilt rate compensation implement system and method A tilt rate compensating implement system and method utilizes first hand second sensors for sensing the position of the rod end portion of first and second implement lift jacks. A controller calculates a tilt angle of the implement based on a difference i... | 09/03/1996 |
| 5499684 | Geographic surface altering implement control system A tilt angle control system has first and second sensors for sensing the position of the rod end portion of first and second lift jacks. A controller calculates an actual tilt angle of an implement connected to the rod end portions of the lift jacks based... | 03/19/1996 |
| 5277258 | Single lever bulldozer blade control apparatus A single lever blade control apparatus for bulldozers that is capable of operating in three mutually perpendicular planes to activate three independent hydraulic valves controlling a bulldozer blade: up/down, tilt and angle. Movement of the bulldozer blad... | 01/11/1994 |
| 5251705 | Electrical trigger for quick drop valve A quick drop valve is electrically actuated by a switch located adjacent to the implement positioning control lever. The quick drop valve is a pilot operated spring biassed valve. When the electric switch is closed a solenoid valve is energized redirectin... | 10/12/1993 |
| 5232057 | Single lever multiple function control mechanism A control mechanism for actuating multiple valve spools with a single control lever includes a frame member to which a valve assembly having multiple valve spools is assembled. A fixed shaft is mounted in a spaced parallel relationship to said valve spool... | 08/03/1993 |
| 5000650 | Automatic return to travel The material loading machine supported on the ground surface is in combination with a return to travel assembly. The combination includes a material loading machine chassis, a work implement, and at least one lift arm supported by the chassis to pivot bet... | 03/19/1991 |
| 4934463 | Automatic implement position control system It takes high skill to achieve maximum efficiency of construction equipment under the ever changing working conditions. The automatic implement control system helps maximize operator efficiency and convenience by allowing a predetermined angle, lift and/o... | 06/19/1990 |
| 4802537 | Control circuit for positioning and tilting an earthmoving blade Fluid control circuits commonly control actuation of a pair of cylinders for positioning an earthmoving blade. The known circuits for providing the three operating modes of the cylinders utilize a separate control valve for each cylinder thereby making pr... | 02/07/1989 |
| 4680880 | Snow plow for small vehicles A snow plow, designed to fit on small vehicles, is disclosed. The plow has a single point connection to the vehicle. A novel yoke mounting scheme is also disclosed, which enables the blade to be angled. The plow is operated by a pneumatic means, controlle... | 07/21/1987 |
| 4505339 | Hydraulic control for a dozer blade A hydraulic circuit for pitch and tilt control of a dozer blade attached to push arms on a vehicle with a pitch ram connected between one push arm and the blade and a dual actuator consisting of a second pitch ram and a tilt ram connected at their head en... | 03/19/1985 |
| 4352398 | Circuit for pitch and tilt of dozer blade A circuit for controlling pitch and tilt of a dozer blade in which two cylinders are connected between the dozer blade and the dozer push arms. One cylinder only is extended and retracted to achieve tilt, and both cylinders are operated in unison to achie... | 10/05/1982 |
| 4270617 | Earth moving machine of the scraping blade type An earth moving machine having an improved mounting for a scraping blade attached thereto. The scraping blade of the machine herein disclosed is capable of undergoing independent or simultaneous rotational movement about three perpendicular axes and apply... | 06/02/1981 |
| 4243106 | Device for setting blade of earthmover A device for varying the angular setting of the blade of an earthmoving vehicle by means of a pair of double acting hydraulic cylinders in which only one of the cylinders receives pressure direct from a pump. The piston of that cylinder acts on one end of... | 01/06/1981 |
| 4211282 | Adjustable blade stabilizer and controls An adjustable blade stabilizer and controls utilized in an earth-working machine such as a bulldozer. The blade and push arms of the machine form a U-shaped structure which is unable to adjust to substantial lateral loads imposed on the blade. The blade s... | 07/08/1980 |
| 4201268 | Adjustment mechanism for dozer blade A mechanism for angling, pitching, and tilting a dozer blade utilized in a conventional bulldozer wherein the blade is connected by means of a universal joint to the center bight portion of a C-shaped frame. A vertical mast support structure at the center... | 05/06/1980 |
| 4166506 | Controlling apparatus for bulldozer blade A controlling apparatus for bulldozer blade in which the control is carried out automatically or manually. The apparatus comprises an electromagnetic valve for controlling a cylinder of the bulldozer blade, a switch for changing the control of the bulldozer ... | 09/04/1979 |
| 4139066 | Hydraulic tilt and pitch control for dozer blade A hydraulic control is provided for selectively effecting tilt and pitch movement of a dozer blade via selected operation of tilt and pitch control valves which are connected in parallel with each other in two conduit networks, the first being connected t... | 02/13/1979 |
| 4086843 | Tilt tip circuit with bypass valve In a fluid system having a main control valve and bypass control valve both responsive to pilot pressure for actuation thereof for supplying fluid to a pair of hydraulic actuators and a pair of bypass valves, the pump's flow is supplied to the first actua... | 05/02/1978 |
| 4074448 | Hinged snowplow, conversion kit, and method therefor The specification discloses a snowplow for vehicles including a central, generally vertically extending hinge having blade sections on either side allowing the plow to be positioned in a forwardly projecting V shape, a recessed cupped shape, or angled to ... | 02/21/1978 |
| 4034815 | Blade lift float circuit for motor graders A construction vehicle, such as a motor grader, comprises a work tool mounted thereon and adapted to be selectively moved by at least one double-acting hydraulic cylinder. A fluid circuit comprises a pressurized fluid source adapted to communicate fluid t... | 07/12/1977 |
| 4028820 | Hydraulic system for vehicle mounted snowplow blade A hydraulic system for a vehicle mounted snowplow blade capable of lifting, lowering, and angling the blade right or left has a single 4-way valve controlling power flow to the lift and angling cylinders. Power flow to and return flow from the angle cylin... | 06/14/1977 |
| 4024796 | Float control electrical circuit for a blade In a vehicle, such as a motor grader, having a work tool operated by at least one hydraulic cylinder, the position of the work tool being controlled by a main control valve, and the work tool being placed in a float condition by actuation of a second cont... | 05/24/1977 |
