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| Number | Title | Issue Date |
| 7222444 | Coordinated linkage system for a work vehicle A work vehicle with a tool pivotally attached to a linkage, an actuator for controllably moving the tool about its pivot, and a tilt angle sensor for sensing the absolute angle of the work tool relative to the earth. A controller is adapted to perform an auto-hold f... | 05/29/2007 |
| 7134541 | Conveyance apparatus for processing step A conveyance truck movable along travel rails includes a suspended supporting device for supporting a vehicle body, a raising and lowering device for raising and lowering the suspended supporting device, and a posture adjusting device for adjusting the posture of th... | 11/14/2006 |
| 6116847 | Lift arm for a work machine having extended height and enhanced stability A lift assembly for lifting an implement relative to a frame of a work machine is disclosed. The lift assembly includes a lift arm having a frame pin bore, a cylinder pin bore, a linkage pin bore, and an implement pin bore. The frame pin bore and said cyl... | 09/12/2000 |
| 5592762 | Excavator bucket linkage An excavator linkage comprising a ternary link with first, second and third pivot connections and a follower link with first and second pivot connections. The first pivot connection of the ternary link is pivotally coupled to the rod end of the bucket act... | 01/14/1997 |
| 5377376 | Mobile surface cleaning machine A surface cleaning machine (10) is disclosed in the preferred form as a combination sweeping-scrubbing apparatus including a sweeping brush (18) for sweeping debris into a hopper (20) and a one piece squeegee (112) for picking up solution after four stagg... | 01/03/1995 |
| 4355946 | Lift arm and control linkage structure for loader buckets A skid steer loader includes lift arms which are supported by two pairs of guide links arranged such that the bucket undergoes substantially vertical movement as it moves between lowered and raised positions. One of the pairs of guide links serves as part... | 10/26/1982 |
| 4345871 | High-lift attachment for an agricultural tractor provided with a three-point linkage A high-lift attachment for a tractor provided with a three-point linkage comprises a platform provided with a vertical backing frame, and a vertical intermediate frame positioned between the backing frame and the tractor body. The intermediate frame is co... | 08/24/1982 |
| 4318663 | Levelling device for a material handling member A mechanical linkage and hydraulic circuit are used to control the position of a material handling element. A bell crank and outrigger arm are joined between the boom and dipperstick of a backhoe linkage and the supporting frame. A relief valve discharges... | 03/09/1982 |
| 4316697 | Front-loading hydraulic excavator A hydraulic excavator has a bucket actuating and control linkage comprising a boom pivotally connected at one end to a self-propelled vehicle, a stick pivotally connected at one end to the other end of the boom, and a bucket pivotally mounted on the other... | 02/23/1982 |
| 4218171 | Public works machine including control jacks in a boom balance assembly The present invention relates to a method for determining the locations of the two hydraulic jacks for controlling an assembly of two pivoted arms, the first arm, called boom or jib, pivoted on the frame of a public works machine, such as a loader or a hy... | 08/19/1980 |
| 4201511 | Device for handling containers An improvement to large container handlers having a transportable platform. A powered positionable support arm is pivotally mounted on one end to the platform for vertical rotation. A L-shaped arm is pivotally mounted from the other end of the support arm... | 05/06/1980 |
| 4053075 | High lift mounting means for loader buckets A loader comprises means mounting a loader bucket thereon for selectively moving the bucket substantially vertically between lowered and raised positions thereof. Such mounting means comprises first, second and third pairs of lift arms pivotally interconn... | 10/11/1977 |
| 4029226 | Linkage support system for material handling unit A linkage system for pivotally supporting a boom on a vehicle body with a material handling unit pivoted on the outer end of the boom through a unit fluid ram is disclosed herein. The linkage system consists of an arm that is supported for pivotal movemen... | 06/14/1977 |
| 4002253 | Attachment for articulated vehicle A boom is mounted by a linkage on the forward member of an articulated vehicle. A link connects the forward member to the boom and in front of this an hydraulic piston and cylinder also connects the forward articulated member to the boom. Rotation of the ... | 01/11/1977 |
| 3990161 | Crowd system for power shovels A crowd system for a power shovel having a front end assembly including a dipper mounted on a body, and means mounted on the body and operatively connected to the front end assembly for hoisting and lowering the dipper, comprising a mast pivotally connect... | 11/09/1976 |
| 3967744 | Extensible reach load lifting mechanism An extensible reach load lifting mechanism for a truck or similar vehicle in which a first boom assembly is mounted pivotably from the rear portion of the vehicle and extends lengthwise thereof having a hydraulic cylinder actuator for raising and lowering... | 07/06/1976 |
| 3952881 | Bale loader A bale loader comprising an elongated grab essembly along one side of a towed platform. As the platform moves forward, the grab assembly moves over a row of bales and is eventually actuated to grab a number of bales in a single operation. The overall leng... | 04/27/1976 |
