| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 037443000 | Dipper-type (e.g., backhoe bucket) | 13 |
| 20090049718 | Swing Type Working Vehicle - A swing type working vehicle, wherein a space at the foot portion of an operator can be increased when pedal operation is not required. A step ( | 02-26-2009 |
| 20090077839 | Backhoe Hydraulic System - A pilot pressure control valve V | 03-26-2009 |
| 20090133297 | EXCAVATOR MOUNTED WITH TANKS HAVING SIDE DOORS - An excavator mounted with tanks having side doors is provided, in which bend-formed side doors, which are mounted on outer sides of a hydraulic fluid tank and a fuel tank that are welded structures mounted on an upper frame of the excavator, have the same curved surfaces as an external shape of the equipment, so that no precise tank manufacturing work is required and welded portions of the tanks are prevented from being exposed to an outside. The excavator mounted with tanks having side doors includes a lower driving structure; an upper frame mounted on the lower driving structure to be swiveled; a cap and an engine room mounted in front and in the rear of the upper frame, respectively; working devices fixed to the upper frame and composed of a boom, an arm, and a bucket driven by hydraulic cylinders, respectively; a counter weight mounted in the rear of the upper frame to keep the balance of the equipment during working; a hydraulic fluid tank and a fuel tank mounted on the upper frame in front of the engine room; and side doors hingedly fixed to outer sides of the hydraulic fluid tank and the fuel tank, respectively, to form outer side surfaces of the hydraulic fluid tank and the fuel tank. | 05-28-2009 |
| 20090158625 | CONTROL SYSTEM FOR TOOL COUPLING - A control system for a tool coupling of the type that attaches a tool to an excavator dipper stick and provides for rotation of the tool with respect to the dipper stick about an axis, and further provides for tilting of the tool, includes a rotation sensor and a tilt sensor. The rotation sensor is mounted on the coupling for determining the amount of rotation of the tool with respect to the dipper stick about an axis. The tilt sensor is mounted on the coupling for determining the amount of tilt of the tool with respect to gravity. A control is responsive to the rotation sensor and to the tilt sensor for determining the orientation of the tool. | 06-25-2009 |
| 20100115801 | Ditch Digging Bucket - A one-pass bucket includes a top wall, a bottom wall, a rear wall and a pair of side walls diverging forwardly from the rear wall to an open front end of the bucket, wherein the curved end walls extend convexly from the bottom wall to the top of the end wall at a forward edge thereof, and extending substantially diagonally upwardly from the bottom at a rearward edge so that the forward edge of the curved end wall curves upwardly towards the plane of the top wall so as to intersect the plane of the top wall non-tangentially and the rearward edge extends diagonally to intersect the plane of the top wall whereby a round bottom ditch is formed by rotating one of the curved end walls down and dragging that curved end wall through the soil longitudinally of the proposed ditch in a single pass. | 05-13-2010 |
| 20100115802 | HYDRAULIC BACKHOE SHIFT MECHANISM - An earth-working vehicle, such as a backhoe loader, has an implement, such as a backhoe, mounted in a manner that the implement can be shifted transversely with respect to the vehicle. A hydraulic motor and roller cable or rack are secured to the vehicle main frame and implement supporting plate to position the implement transversely of the vehicle without the jerky movements of prior backhoe loaders. | 05-13-2010 |
| 20110005108 | RESILIENT EXCAVATION BUCKET, EXCAVATION APPARATUS, AND METHODS OF USE AND MANUFACTURE THEREOF - A resilient excavation bucket for use with a piece of machinery having an articulated arm. The excavation bucket comprises a resilient member and a rigid member. The resilient member has a digging edge adapted to deflect in response to pressure from impact with a material at least as rigid as the digging edge and to return to a substantially non-deflected condition upon release of the pressure. The rigid member is cooperatively associated with the resilient member and has a connection member adapted to pivotally engage a portion of the articulated arm of the piece of machinery. At least one of the resilient member and the rigid connection member at least partially defines a bucket cavity disposed at least partially between the digging edge and the connection member. Additionally, an excavation apparatus comprising a backhoe having an articulated arm and the resilient excavation bucket operatively associated with the articulated arm. | 01-13-2011 |
| 20110154696 | RESILIENT EXCAVATION BUCKET, EXCAVATION APPARATUS, AND METHODS OF USE AND MANUFACTURE THEREOF - A resilient excavation bucket for use with a piece of machinery having an articulated arm. The excavation bucket comprises a resilient member and a rigid member. The resilient member has a digging edge adapted to deflect in response to pressure from impact with a material at least as rigid as the digging edge and to return to a substantially non-deflected condition upon release of the pressure. The rigid member is cooperatively associated with the resilient member and has a connection member adapted to pivotally engage a portion of the articulated arm of the piece of machinery. At least one of the resilient member and the rigid member at least partially defines a bucket cavity disposed at least partially between the digging edge and the connection member. Additionally, an excavation apparatus comprising a backhoe having an articulated arm and the resilient excavation bucket operatively associated with the articulated arm. | 06-30-2011 |
| 20120066941 | ELONGATED NARROW TRENCHING SCOOP ATTACHMENT FOR A BACKHOE AND METHOD FOR USING THE SAME - An elongated digging attachment for an excavator, including a recessed main body portion, a connection assembly connected to the main body portion, and a ground engaging portion connected to the main body portion and oppositely disposed from the connection assembly. The recessed main body portion defines a concave curvature, the recessed main body portion and the ground engaging portion define a scoop, and the scoop has an aspect ratio of at least about 1:3. | 03-22-2012 |
| 20120246981 | HYDRAULIC SHOVEL AND METHOD OF CONTROLLING HYDRAULIC SHOVEL - A hydraulic shovel includes an engine; a hydraulic pump driven by the engine; an excavating attachment which is driven by high oil discharged from the hydraulic pump; a motor generator that assists a power supply of the engine; and an assist control unit that controls the motor generator to assist the engine in a latter part of the excavating operation by the excavating attachment. | 10-04-2012 |
| 20140157635 | CONICAL PIN AND BEARING ASSEMBLY - A pin and bearing assembly including a pair of pins, each pin having a frustoconical portion, a pair of sleeve bearings configured to rotate relative to the pair of pins, a pair of rings configured to couple the pair of sleeve bearings to a hub, and a thru rod having a nut on a first end wherein when the nut is tightened a compressive force is applied to the pair of pins and pair of sleeve bearings. | 06-12-2014 |
| 20140338235 | LOAD RELEASE HEIGHT CONTROL SYSTEM FOR EXCAVATORS - An excavator includes a dipper assembly configured to receive a dipper load, the dipper assembly having an actuated position for emptying the dipper load, a sensor assembly configured to monitor one or more operating conditions of the excavator, and a control module. The control module is configured to receive signals from the sensor assembly, determine a height of the dipper assembly relative to a surface, and inhibit movement of the dipper assembly to the actuated position. | 11-20-2014 |
| 20160130789 | GROUND ENGAGING TOOL - A ground engaging tool includes a ground engaging tool body, an excavating tooth, and an adapter. A fixed portion of the adapter is fixed to the ground engaging tool body, and an insertion portion of the adapter protrudes from the ground engaging tool body in a first direction. The excavating tooth has a tooth body, an insertion cavity and a supporting portion. The insertion cavity is formed in a base end face of the tooth body. The excavating tooth is attached to the adapter such that the insertion portion of the adapter is inserted into the insertion cavity of the excavating tooth. The supporting portion projects from an innermost part of the insertion cavity. The supporting portion of the excavating tooth opposes a front end of the insertion portion of the adapter such that a gap exists between the supporting portion and the front end of the insertion portion. | 05-12-2016 |
