WACKER CONSTRUCTION EQUIPMENT AG Patent applications |
Patent application number | Title | Published |
20100254769 | Tamping Device - A vibrating plate serving as a tamping device comprises an upper mass ( | 10-07-2010 |
20100236802 | Percussive Mechanism with an Electrodynamic Linear Drive - A percussive mechanism, which is provided in the form of an, e.g. pneumatic spring percussive mechanism, comprises an electrodynamic linear drive, a drive piston, which can be reciprocally moved inside a percussive mechanism housing by the linear drive, and a percussive piston. An additional hollow space is provided in front of and/or behind the drive piston and can be isolated at least in part from the surrounding area so that a pneumatic spring can be created in the additional hollow space. The pneumatic spring slows the drive piston at its returning points and facilitates a returning motion without loading the electrodynamic linear drive. | 09-23-2010 |
20100199774 | Vibrating Plate with Unbalanced Shafts Arranged at an Angle - A vibrating plate for compacting soil comprises an upper mass; a lower mass, which is elastically coupled to the upper mass and which has at least one soil contact plate, and; a vibration generator device that acts upon the soil contact plate. The vibration generator device comprises at least four unbalanced masses that can each be rotationally driven about a rotation axis, the rotation axis of at least two of the unbalanced masses being arranged at an angle to the rotation axes of the other unbalanced masses. One of the unbalanced masses depicts a reference unbalanced mass that does not require its own phase adjusting device. On the other hand, a separate phase adjusting device is assigned to each of the other unbalanced masses, enabling the phase position of these unbalanced masses to be individually adjusted with regard to the reference unbalanced mass. | 08-12-2010 |
20100166499 | Vibrating Plate with Individually Adjustable Vibration Generators - A vibrating plate comprises an upper mass with a drive, a lower mass with a soil contact plate ( | 07-01-2010 |
20100163260 | Drilling and/or Percussive Hammer with No-Load Operation Control - A drilling and/or percussive hammer comprises a handle ( | 07-01-2010 |
20090306826 | Vibrating Plate System - A vibrating plate system comprises at least two vibrating plates are mechanically coupled to one another via a coupling device and a controlling transmitter for outputting control data to the vibrating plates. Each of the vibrating plates comprises a receiving device for receiving the control data, a drive mechanism for propelling the vibration plate forwardly and rearwardly, and a position determining device for determining the position of the relevant vibrating plate within the group. A rule memory is also provided in which control rules are stored. One control rule defines a correlation between a control measure for controlling the traveling mechanism according to the position of the vibrating plate and an item of control information given by the control data. In each vibrating plate, a single control device selects a suitable control rule according to the position of the vibrating plate and to the control measure. | 12-10-2009 |
20090166050 | Method and Device for Measuring Soil Parameters by Means of Compaction Machines - A soil compaction device has a vibrated contact element that makes contact with the soil during a contact phase and that is exposed to a contact force exerted by the soil and travels over a contact distance. A dynamic stiffness of the soil is formed from the gradient of the contact force and from the contact distance. Furthermore, a contact surface parameter to take account of the actual contact surface of the contact element with the soil is determined. The dynamic deformation modulus is then the product of the contact surface parameter and the dynamic stiffness. The method allows the determination of the dynamic deformation modulus, and hence of the soil stiffness, during the compaction operation. | 07-02-2009 |
20080314608 | Linearly Driven and Air-Cooled Boring and/or Percussion Hammer - A boring and/or percussion hammer comprises an electrodynamic linear drive and a pneumatically damped percussion mechanism which is provided with a drive piston driven by the linear drive during the reciprocating movement thereof, an impact piston and a pneumatic spring arranged between the drive and impact pistons. An air-supply device comprises a pumping element, which is linearly forth and back movable for generating airflow. The pumping element is connected to the drive piston in such a way that the movement thereof is transmitted to said pumping element, thereby the cooling air is transported by an air channel for cooling heat generated elements. | 12-25-2008 |
20080302548 | Percussion Hammer and/or Drill Hammer Comprising a Safety Coupling - A safety coupling in a percussion hammer and/or drill hammer, comprising a basic sleeve, a driven toothed wheel that is rotatably mounted on the basic sleeve and can be driven by a drive unit, a closing ring which is fastened to the basic sleeve, and a locking ring located between the driven toothed wheel and the closing ring. Said locking ring is fixed in a torsion-proof manner relative to the closing ring while being movable relative to the closing ring in an axial direction, counter to the effect of a spring mechanism. The locking ring is axially displaced while the driven toothed wheel remains in the axial position thereof when a threshold torque is exceeded. | 12-11-2008 |
20080298893 | Vibration Plate with Stabilizing Device - A vibration plate with a top mass and a bottom mass has, in addition to a spring device, a stabilizing device with which the bottom mass can be guided during its movement relative to the top mass. The stabilizing device has a transverse stabilizer which prevents tilting between the top mass and the bottom mass. The stabilizing device may likewise be formed by one or more Panhard rods, which prevent a transverse displacement between the top mass and the bottom mass. | 12-04-2008 |
20080247824 | Vibrating Plate Comprising a Remote Control that is Integrated Into a Draw Bar - The invention relates to a vibrating plate for ground compaction, said plate comprising a remote control device for controlling at least one forward or rear journey by the excitation of an oscillation device. The remote control device comprises an emitter unit, which can be displaced independently of the remaining vibrating plate and which can be detachably fixed to a draw bar. In a remote control mode, the emitter unit is held by the user and displaced independently of the vibration plate. In a draw bar mode, the emitter unit is placed on one end of the draw bar, so that the user can guide the vibrating plate by the pulling and pushing of robust control handles on the emitter unit. The latter can have at least one control handle, which can be used not only to input control commands for controlling the oscillation device, but can also be held by the user to manually guide the vibrating plate. | 10-09-2008 |