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| Number | Title | Issue Date |
| 8057124 | 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 gradien... | 11/15/2011 |
| 7588389 | Greensroller with variable vibration amplitude A vibratory roller unit with a framework having a rotating shaft and a drum. The shaft has a fixed inboard eccentric weight and an outboard eccentric weight rotatable with respect to the fixed inboard eccentric weight for varying the amplitude of the vibrations on t... | 09/15/2009 |
| 7416365 | Safety device for backward movement of vibration roller The present invention provides a safety device of vibration roller wherein a travel switching device of the roller is switched to a neutral position automatically and the roller stops automatically when the operator is caught between the roller and an obstacle, and ... | 08/26/2008 |
| 7410322 | Vibrating compactor apparatus A vibrating trench compactor apparatus including a first frame, a second frame, and a compactor wheel. The first frame has an adapter plate connectable to a vehicle and a first arm and second arm extending from the adapter plate. A plurality of vibration dampening m... | 08/12/2008 |
| 7347799 | Antivibration device having rotary flyweights and an epicyclic geartrain An antivibration device for reducing the vibration of a structure, includes a stationary casing, mounted on the structure, and first and second sets each including two contra-rotary rotors having eccentric flyweights, the flyweights and the rotors being disposed res... | 03/25/2008 |
| 7320558 | Apparatus for screeding uncured concrete surfaces A screeding apparatus and method for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partiall... | 01/22/2008 |
| 7270025 | Adjusting device for regulating the eccentric moment of a roller drum eccentric shaft An adjusting device (11) is for regulating the eccentric moment of an eccentric shaft (2) of a roller drum (1) through the influence of an axially directed force transmitted by a force transmission mechanism (12) to a turning device (5... | 09/18/2007 |
| 7213479 | Vibratory mechanism and vibratory roller A vibratory mechanism includes vibratory shafts, which are stored within a roll and are arranged symmetrically across a rotation axis of the roll, fixed eccentric weights fixed to respective vibratory shafts, rotatable eccentric weights rotatably attached to respect... | 05/08/2007 |
| 7195424 | Roller screed A portable powered roller screed apparatus includes a rotating roller assembly, a first operator roller controller coupled to a first end of the roller assembly, and a second operator roller controller coupled to a second end of the roller assembly. The first operat... | 03/27/2007 |
| 7186056 | Split drum and support arrangement for a compacting work machine A split drum is provided for a compacting work machine and includes a first and a second drum section. A support arrangement defines a housing that surrounds a vibratory mechanism and is adapted to support the first and second drum sections. The support arrangement ... | 03/06/2007 |
| 7185558 | Geared segments with variable gear ratio A variable gear ratio device featuring geared segments with variable gear ratio adapted for inclusion into mechanical machines, motors and pumps where there is a constant requirement for a variable transfer ratio for the variability and optimization of the load of t... | 03/06/2007 |
| 7178631 | Aerial ladder cradle assembly A cradle assembly for aerial ladders (or booms) includes an assembly for rotatably and pivotally supporting an aerial ladder or boom, a first pair of upwardly extending parallel support flanges and a second pair of upwardly extending parallel support flanges extendi... | 02/20/2007 |
| 7171866 | Controllable vibration generator A vibration generator comprises two unbalance shafts, which are positively coupled in a contra-rotative manner and whose relative phrase position can be shifted by a phase shifting device. Each of the unbalance shafts supports a main unbalance mass and a partial unb... | 02/06/2007 |
| 7168885 | Control system and method for a vibratory mechanism A method is provided for controlling a vibratory mechanism. The method includes sensing a vibratory amplitude of the vibratory mechanism and determining a decoupling point of the vibratory mechanism. An output signal is generated based on the determination of the de... | 01/30/2007 |
| 7165469 | Shift rod piston seal arrangement for a vibratory plate compactor An easily accessible phase adjustment mechanism for a vibratory plate compactor includes an improved seal arrangement to protect against leakage of internal lubricating oil into the hydraulic cylinder providing fluid pressure to the adjustment mechanism. An easily d... | 01/23/2007 |
| 7144195 | Asphalt compaction device An asphalt compaction device including a primary compaction plate and a secondary compaction plate for concentrating force, resulting in an increased compaction rate. The secondary compaction plate may be either rotated or extended into its operative position. The a... | 12/05/2006 |
| 7140804 | Concrete stamping apparatus A concrete stamping apparatus includes a roller with a stamp forming its surface, and a receiving portion for rotatably holding the roller. There is also a system for delivering fluid to the roller along its surface, such that it releases easily from the concrete. T... | 11/28/2006 |
| 7121762 | Apparatus for screeding uncured concrete surfaces A screeding apparatus for screeding and smoothing an uncured concrete surface includes a vibrating member and a grade setting device adjustably mounted to said vibrating member. The screeding apparatus may include a wheeled support which at least partially supports ... | 10/17/2006 |
| 7117758 | Vibration generator for a soil compacting device The invention relates to vibration generator for a soil compacting device referred to as a towed vibrating device. The vibration generator has two parallels arranged unbalanced shafts that each support a fixed and a freely rotating unbalanced mass. An unbalance adju... | 10/10/2006 |
| 7100702 | Turf aerator A turf aerator is provided with three aligned aerator shafts having aerator devices mounted thereon. The innermost shaft is mounted in a frame for free-willing operation and the two outer shafts are each connected to a motor through selectively controlled hydraulic ... | 09/05/2006 |
| 7089823 | Vibratory mechanism controller A controller for use in a vibratory mechanism includes an amplitude control circuit that generates an amplitude control signal that varies from a minimum value to a maximum value. The vibratory mechanism is adapted to vibrate at an amplitude based on an amplitude co... | 08/15/2006 |
| 7086806 | Method for asphalt compaction and compaction apparatus A method of compacting a mat of hot mix asphalt which has been laid by an advancing asphalt paver, the method comprising advancing an asphalt compactor over the laid asphalt such that a compaction surface of the compactor, formed by a lower run of at least one belt,... | 08/08/2006 |
| 7081824 | Track monitoring equipment The alignment of railway tracks may be monitored using an accelerometer (36) mounted on a bogie (24) of a railway vehicle to detect lateral accelerations, and a displacement transducer (38) to monitor the lateral displacements of a wheelset (... | 07/25/2006 |
| 7077617 | Vehicle equipped with lift device and lift device A vehicle is provided having a lift device comprising: a carrier; a swing arm with one end fixed to a shaft and another end coupled the carrier; and a drive for swinging the swing arm on top of the vehicle. The carrier is lowered from the top of the vehicle at an in... | 07/18/2006 |
| 7073374 | Soil compaction measurement on moving platform An apparatus and method are provided for the in-situ measurement of the stiffness of a surface. The apparatus includes a platform, which is movable relative to the surface. A stiffness measurement device is supported by the platform in a stationary position relative... | 07/11/2006 |
| 7066681 | Shaft assembly for a vibratory roller An eccentric shaft assembly for a vibratory roller utilizes a cylindrical tubular shaft that considerably reduces the weight of the assembly, decreases substantially oscillatory shaft deflection during rotation and thereby improves bearing and seal life. The eccentr... | 06/27/2006 |
| 7059802 | Vibratory compactor and compact exciter assembly usable therewith A lightweight, easy to assemble, and compact exciter assembly for a compaction device such as a drum assembly of a vibratory trench roller or the like includes a fixed weight and one or more free swinging weights mounted on an exciter shaft, without using any mounti... | 06/13/2006 |
| 7017679 | Device for the continuous adjustment of unbalance of steerable vibration plates The invention relates to steerable vibration plates that are set vibrating by rotating unbalanced masses. By twisting the unbalanced masses relative to one another the resulting forces and their direction of action can be changed, thereby influencing the travel spee... | 03/28/2006 |
| 6976805 | Light weight apparatus for screeding and vibrating uncured concrete surfaces A lightweight screeding apparatus for screeding and smoothing an uncured concrete surface includes a concrete surface working member, such as vibrating beam or member, and a grade setting device adjustably mounted to said vibrating beam. The screeding apparatus may ... | 12/20/2005 |
| 6955045 | Oil pump system Variable displacement pump pumps oil to one or the other ports of an oil operated vehicle wheel motor to drive a lawn mower. ... | 10/18/2005 |
| 6953304 | Lightweight apparatus for screeding and vibrating uncured concrete surfaces A lightweight screeding apparatus for screeding and smoothing an uncured concrete surface includes a concrete surface working member, such as vibrating beam or member, and a grade setting device adjustably mounted to said vibrating beam. The screeding apparatus may ... | 10/11/2005 |
| 6938719 | Speed control system for wheeled hydraulic traveling vehicle Control valves are respectively provided in a pair of variable displacement hydraulic pumps. If an ultra low speed travel signal is issued in response to an ultra-low-speed switch turned on, one of the control valves is fixed to a neutral position by a solenoid valv... | 09/06/2005 |
| 6929421 | Vibratory mechanism and method for lubricating the same A vibratory mechanism is provided for a compacting work machine. The vibratory mechanism includes at least one eccentric weight rotatably positioned within a housing. Pressurized fluid is introduced into the vibratory mechanism at an inlet passage. A means for movin... | 08/16/2005 |
| 6921230 | Closed loop control system for pavement surfacing machine Apparatus and methods for controlling the operation of a pavement surfacing machine are described. One embodiment that controls a pavement surfacing machine having a vehicle moveable in a preselected direction of travel along a pavement surface under the influence o... | 07/26/2005 |
| 6837648 | Portable roller-type compactor apparatus having a combined means for the vibrating and the reversible propelling thereof A manually guided roller-type compactor having a roller, a vibrator assembly, compactor frame, a drive assembly and a directional control assembly. The vibrator assembly is selectively positioned by the directional control assemble along a radial path for propelling... | 01/04/2005 |
| 6829986 | Compactor In a compressor comprising at least one traveling drum (4,4a,4b) rotatable about a drum axis (2), and an oscillation exciter supported in the drum (4,4a, 4b), the angular position of the oscillation exci... | 12/14/2004 |
| 6808336 | Oscillation detecting device for compacting soil A device for compacting the soil comprising a soil contact element which is impinged upon by an oscillation exciter enabling the soil to be compacted. The soil contact element is elastically coupled to an upper mass. The upper mass is used as a detection mass, where... | 10/26/2004 |
| 6769838 | Variable vibratory mechanism A vibratory mechanism includes first and second eccentric weights connected to a gearbox. The gearbox includes an inner shaft, an outer shaft and first and second planetary gear sets. The first and second planetary gear sets are connected to a motor that drives the ... | 08/03/2004 |
| 6752567 | Apparatus for managing degree of compaction in a vibratory compact vehicle An apparatus for managing degree of compaction includes: a sensor 13 which senses a traveling speed of the vehicle; a switch 14 by which a number of vibrations of the roll transmitted per unit time is set; a reference vibration number setting section | 06/22/2004 |
| 6750621 | Method and system for non-contact sensing of motion of a roller drum The present invention discloses a system for non-contact measurement of vibrational motion in a vibratory compacting machine. The system includes a vibrating element such as a roller drum adapted for vibrational motion and a non-contact sensor positioned a distance ... | 06/15/2004 |
