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| Number | Title | Issue Date |
| 7367143 | Cutter and method for working the soil A cutter for working the soil includes a cutting frame, at least two cutting wheels that are supported on the cutting frame in a rotatably drivable manner about parallel axes of rotation, and an adjusting device, The adjusting device functions to adjust the center d... | 05/06/2008 |
| 7350322 | Dewatering system apparatus and method for dredging buckets A dewatering apparatus for removing water from the interior volume of a closed, loaded clamshell dredging bucket. The dewatering system comprises at least one conduit adapted for support from a clamshell type dredging bucket. The conduit has a first end adapted for ... | 04/01/2008 |
| 7258242 | Mobile crane boom having an autarchic hydraulic power unit mounted thereon The present invention relates to a mobile crane boom having a self-sufficient energy supply arranged on it for supplying hydraulic energy to at least one hydraulic load arranged on the mobile crane boom. The supply of the hydraulic load arranged on the mobile crane ... | 08/21/2007 |
| 7171890 | Telescopic lifting device The invention relates to a telescopic lifting column. The lifting column comprises a plurality of tube bodies which are arranged concentrically inside one another and are axially movable in each case with respect to each other. Furthermore, the lifting column compri... | 02/06/2007 |
| 7111419 | Thumb for a backhoe A digging implement (10) including an extendable linkage (12) including a bucket (14) and a thumb assembly (34) for holding materials in the bucket (14). The thumb assembly (34) is configured to rotate as the linkage (12 | 09/26/2006 |
| 5836089 | Excavating equipment fitted with surface clamps Excavating equipment comprising a rigid support structure with articulately mounted surface clamps, an excavating device downstream of the surface clamps in a direction of excavation and an urging device for urging the excavation means in a direction of e... | 11/17/1998 |
| 5638616 | Oil supply mechanism in a deep excavator An oil supply mechanism in a deep excavator comprising a chassis, a turntable disposed on the chassis, a boom which is pivotally supported on the turntable and is vertically swingable, a stretchable arm arrangement which is stretchable in the longitudinal... | 06/17/1997 |
| 5553405 | Power-assisted shovel truck equipped with a water-feeding device and a water-draining device A power-assisted shovel truck is provided including a swiveling truck and a rotary bucket attached to the truck by a movable arm. A water feed pump and a water feed tank are provided on the truck for pumping water towards the rotary bucket. A conduit comm... | 09/10/1996 |
| 5443294 | Single-line clamshell bucket A single-line clamshell bucket is provided comprising an upper sheave housing and an upper sheave assembly connected to the upper sheave housing. The bucket also comprises a lower sheave assembly vertically aligned beneath the upper sheave assembly in a m... | 08/22/1995 |
| 5377432 | Deep excavator A deep excavator comprising a stretchable arm arrangement having four telescopically assembled alms which are simultaneously extended and contracted for excavating earth or sand to form a deep hole. The stretchable arm arrangement houses therein a working... | 01/03/1995 |
| 5375348 | Deep excavator A stretchable arm of a deep excavator comprises top, middle and base arms wherein a bucket is suspended from the top arm and a working unit is fixed to the middle arm. Two hydraulic cylinders constituting the working unit are arranged in parallel with eac... | 12/27/1994 |
| 5024397 | Clamshell attachment for log grapple A clamshell attachment for a crescent shaped, concave-convex log grapple converts the log grapple to a scoop or bucket type device for handling bulk material such as wood chips. It consists of a pair of concave-convex scoops pivoted together at their uppe... | 06/18/1991 |
| 4695086 | Two-sided grab bucket with plural operating cylinders A two-sided grab bucket comprises a U-shaped scoop carrier and two scoops, which are provided with crosspieces, which are welded to the inside surfaces of the upper edge portions of the side walls of the scoops and are pivoted to the legs of the scoop car... | 09/22/1987 |
| 4654987 | Grab bucket and actuating mechanism therefor A two-sided grab bucket comprises a U-shaped scoop carrier and two scoops, which are provided with crosspieces, which are welded to the inside surfaces of the upper edge portions of the side walls of the scoops and are provided to the legs of the scoop ca... | 04/07/1987 |
| 4542929 | Articulating clam type grapple for a backhoe Articulating clam-type grapple for a backhoe which includes a mounting head member for connecting to the backhoe dipper stick and tool cylinder. A grapple mounting assembly is pivotally attached to the head mechanism which enables both grapple jaws to be ... | 09/24/1985 |
| 4381872 | Remote controlled clamshell bucket apparatus and method of using same The disclosed invention relates to a single hoist line operated clamshell bucket apparatus and method of use. The bucket apparatus is loaded in the usual manner at a first location for transporting bulk material to a second location where it is discharged... | 05/03/1983 |
| 4239273 | Device for the rotary assembly of a member controlled by pressurized fluid The invention relates to a device for the rotary assembly of a member controlled by pressurized fluid, comprising a body presenting first and second shoulders opposite which are disposed first and second shoulders, with which is provided the member compri... | 12/16/1980 |
| 4127298 | Crane grab A crane grab suspended by a single crane wire includes an operator-activated control means shiftable between a first position, in which open grab halves will be closed for digging in response to the crane wire being hoisted, and a second position, in whic... | 11/28/1978 |
| 4116069 | Device for taking bottom soil samples from deep water basins The device comprises two independently operating systems which are separated from each other in kinematical and actuating respects, viz, a system for closing the jaws of the sample-taking grab and a system for dropping the ballast weights. Said system for... | 09/26/1978 |
| 4043580 | Cable-controlled grab device A cable-controlled grab device possessing a pair of scoops directly and linkably connected to a support yoke. A central shaft has the scoops pivotably mounted at opposite ends thereof. An upper portion of tackle is secured to the yoke while between a lowe... | 08/23/1977 |
