Unbalanced Weight Patents (Class 74/87)
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Patent number: 11624406Abstract: A bearing cooling system for a vibratory pile driving system comprising at least one housing wall defining at least one bearing opening and at least one bearing assembly supported by the at least one housing wall in the at least one bearing opening. The bearing cooling system comprises a bearing cover plate, a bearing cover seal member, and at least one bearing bolt. The bearing cover plate defines an inner surface having a bearing cover plate seal recess. The bearing cover seal member adapted to be received at least partly within the bearing cover plate seal recess. The at least one bearing bolt is configured to secure the bearing cover plate relative to the at least one housing wall to form at least one contact location at which the bearing cover plate is in contact with at least a portion of the at least one bearing assembly.Type: GrantFiled: March 4, 2021Date of Patent: April 11, 2023Assignee: AMERICAN PILEDRIVING EQUIPMENT, INC.Inventor: Joseph M. Klekotka
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Patent number: 11623249Abstract: The vibrating screen have a screen deck, two sidewalls and a mechanical vibrator comprising two shafts, rotating at the same rotation and in opposite directions, each one of the end portions of each shaft carrying an eccentric weight and being supported on bearings which are supported in the sidewalls of the vibrating screen. The shafts have their end portions, adjacent to each other, supported on bearings mounted to a same bearing case fixed to beams, transversal and having opposite ends fixed to the sidewalls of the vibrating screen. Each end portion of a shaft carries an eccentric weight with a total mass different from that one of the eccentric weights of the end portions of the other shaft, said shafts rotating in determined phases, defining the inclination of the major axis of an elliptical movement imparted to the screen deck.Type: GrantFiled: December 12, 2018Date of Patent: April 11, 2023Assignee: METSO BRASIL INDÚSTRIA E COMÉRCIO LTDAInventors: Sadao Kato, Fausto Rezende, Jr., Ricardo Maerschner Ogawa
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Patent number: 11465178Abstract: A hydraulic vibration generation device is provided. The device includes a manifold member having an inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a vibration generating member having a channel grooved drive and an off-center weight and bearing retaining plates. The inner volume receives the vibration generating member within the inner volume. The bearing retaining plate that retain bearings operate to retain the vibration generating member within the inner volume in response to coupling the bearing retaining plate to the manifold member wherein two bearings on opposing ends of the vibration generating member are retained within recesses of the bearing retaining plates. The vibration generating member rotates and generates vibration in response to hydraulic fluid flowing into the manifold member through the inlet orifice and out of the manifold member through the outlet orifice.Type: GrantFiled: November 12, 2020Date of Patent: October 11, 2022Inventor: Albert Ben Currey
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Patent number: 11325156Abstract: A hydraulic motor is provided. The device includes a manifold member having an inner volume, a fluid inlet orifice and a fluid outlet orifice. The device further includes a power generating member having a channel grooved drive. The inner volume receives the power generating member within the inner volume and retains the power generating member within the inner volume. The power generating member rotates and generates power to be supplied to an external device in response to hydraulic fluid flowing into the manifold member through the inlet orifice and out of the manifold member through the outlet orifice.Type: GrantFiled: August 11, 2021Date of Patent: May 10, 2022Inventor: Albert Ben Currey
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Patent number: 11274401Abstract: An earth working machine (10), in particular a road milling machine, a stabilizer, or the like, having a milling drum (30) that is mounted rotatably on a machine frame (11) and is populated or populatable on its outer circumference with working tools (31); the working tools (31) to come into contact, during working operation, with the ground that is to be worked to remove it; a drive unit (20) drives the milling drum (30) by means of a drive motor (21); an input drive shaft (33) couplable to the drive motor (21) is attached to the milling drum (30); and a ballast element, constituting a kinetic mass (57), increases the kinetic energy of the milling drum (30). The kinetic mass (57) is couplable to or decouplable from the rotatable milling drum (30), or a rotational member indirectly or directly coupled to the milling drum (30), via a shiftable coupling (55).Type: GrantFiled: March 20, 2020Date of Patent: March 15, 2022Inventors: Sebastian Bötzius, Axel Mahlberg, Stefan Scheer, Björn Buchholz
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Patent number: 11241296Abstract: An implantable tissue marker incorporates a contrast agent sealed within a chamber in a container formed from a solid material. The contrast agent is selected to produce a change, such as an increase, in signal intensity under magnetic resonance imaging (MRI). An additional contrast agent may also be sealed within the chamber to provide visibility under another imaging modality, such as computed tomographic (CT) imaging or ultrasound imaging.Type: GrantFiled: November 30, 2017Date of Patent: February 8, 2022Assignee: Breast-Med, Inc.Inventors: Patrick Bolan, Michael G. Garwood, Michael T. Nelson, Daniel A. Halpern
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Patent number: 10683175Abstract: Bi-directional vibratory conveyor apparatuses comprise an elongated horizontal conveying surface, a vibration inducing motor, and vertically-disposed legs under the horizontal conveying surface, the deflection of which via one or more deflector in conjunction with vibrations of the horizontal conveying surface by the vibration inducing motor induces directional travel of parts on the horizontal conveying surface based on the direction of deflection of the legs therebeneath. Methods of using the same are further provided.Type: GrantFiled: April 15, 2019Date of Patent: June 16, 2020Assignee: R&D Vibratory Conveyors LLCInventor: Daniel T. Lease
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Patent number: 10603688Abstract: The present application discloses a microtome. The microtome includes: a blade cutting a soft material in a first direction, the first direction being a feeding direction of the soft material; a blade holder holding the blade; an actuator providing a vibration in a second direction along a cutting edge of the blade; and a frequency-tunable resonator driven by the actuator into vibration and fixedly connected to the blade holder to transfer the vibration to the blade holder and the blade, the resonator having a tunable resonant frequency in the second direction.Type: GrantFiled: December 11, 2017Date of Patent: March 31, 2020Assignee: The Chinese University of Hong KongInventors: Shih-Chi Chen, Ji Wang, Chenglin Li
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Patent number: 10486119Abstract: The invention relates to a system for preparing a formulation in a container, comprising an agitating device, said agitating device including means for creating a conical depression within the formulation inside said container. Said system is arranged to prepare a formulation consisting of a nail polish inside a bottle.Type: GrantFiled: June 30, 2016Date of Patent: November 26, 2019Assignee: PROVAINEInventors: Olivier Fiastre, Damien Blanchy
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Patent number: 10376921Abstract: A vibrator for generating vibrations. An exciter cell having rotationally drivable unbalanced masses that are rotatably supported in an exciter cell housing and having an adjustment unit for adjusting the phase position of the unbalanced masses relative to one another. The adjustment unit is configured as a planetary gearing that has at least two input trains to which the unbalanced masses of the exciter cell are coupled that are adjustable in phase relative to one another and that has an adjustment input train for changing the phase position of the output trains of the planetary gearing.Type: GrantFiled: August 9, 2017Date of Patent: August 13, 2019Assignee: Liebherr-Components Biberach GmbHInventors: Norbert Hausladen, Viktor Schindler
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Patent number: 10344439Abstract: A vibratory plate for soil compaction machine has an upper mass and a lower mass that is elastically coupled to the upper mass and that has a soil contact plate. The soil contact plate has a vibration exciter device. At least one energy storage element is situated on the upper mass.Type: GrantFiled: September 12, 2018Date of Patent: July 9, 2019Assignee: Wacker Neuson Produktion GmbH & Co. KGInventors: Michael Steffen, Walter Unverdorben
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Patent number: 10166573Abstract: An eccentric assembly controlled by a rotational speed thereof. The eccentric assembly includes: a housing driven and rotated by a motor; an eccentric shaft installed in the housing to have a changeable angular position by rotating relative to the housing; a locking device adopted to lock the eccentric shaft by engaging with one side of the eccentric shaft and to unlock the eccentric shaft when a rotational speed of the housing is greater than a locking critical speed; a clamping device adopted to clamp an opposite side of the one side of the eccentric shaft that engages with the locking device and to release clamping to the eccentric when a rotational speed of the housing is greater than a clamping critical speed; and a stopper installed in the housing so as to limit a rotation angle of the eccentric shaft generated when locking and clamping to the eccentric shaft are released.Type: GrantFiled: December 28, 2015Date of Patent: January 1, 2019Assignee: Volvo Construction Equipment ABInventor: Maciej Karcz
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Patent number: 9782800Abstract: A vibratory drive of a vibrating roller includes an unbalanced-mass vibration generator configured to be used in at least one drum of the vibrating roller. The vibrating roller is operated by an external drive device or advancing device such that the unbalanced-mass vibration generator can be rotated relative to the drum in at least one direction. The unbalanced-mass vibration generator is mechanically coupled to a hydraulic motor, which is configured to be supplied with a pressure medium by a hydraulic pump to rotate the unbalanced-mass vibration generator. At least one high-pressure accumulator is provided to accommodate pressure medium pumped by the hydraulic motor in a pushing operation. The high-pressure accumulator feeds stored pressure medium to the hydraulic motor in a driving operation of the hydraulic motor.Type: GrantFiled: December 22, 2010Date of Patent: October 10, 2017Assignee: Robert Bosch GmbHInventors: Nikolaus Renz, Tobias Simmendinger
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Patent number: 9531235Abstract: Systems and methods involving reconfigurable rotating masses are disclosed. One embodiment may take the form of a system having a motor and coupled weights attached to the motor. Operation of the motor rotates the coupled weights and the weights are dynamically reconfigurable to change the location of the center of mass relative to an axis of rotation.Type: GrantFiled: April 27, 2012Date of Patent: December 27, 2016Assignee: Apple Inc.Inventors: Fletcher Rothkopf, Colin M. Ely
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Patent number: 9284696Abstract: A compactor roller for a soil compactor comprises an oscillation mass assembly (34) including at least one oscillation shaft (36) rotatable about an oscillation-shaft axis of rotation eccentric to a compactor-roller axis of rotation, which oscillation mass assembly (34) includes at least one oscillation unbalance mass (66, 68), and a vibration mass assembly (84) including a vibration shaft (86) rotatable about a vibration shaft axis of rotation (Dv), which vibration mass assembly (84) includes at least one vibration unbalance mass (96), wherein at least one oscillation shaft (36, 38) and the vibration shaft (86) are carried in the compactor roller (10) such that they can be driven to rotate.Type: GrantFiled: January 31, 2013Date of Patent: March 15, 2016Assignee: HAMM AGInventors: Richard Fischer, Günter Kolberg, Günter Rath, Josef Dagner
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Patent number: 9241773Abstract: An implantable tissue marker incorporates a contrast agent sealed within a chamber in a container formed from a solid material. The contrast agent is selected to produce a change, such as an increase, in signal intensity under magnetic resonance imaging (MRI). An additional contrast agent may also be sealed within the chamber to provide visibility under another imaging modality, such as computed tomographic (CT) imaging or ultrasound imaging.Type: GrantFiled: March 2, 2015Date of Patent: January 26, 2016Assignee: Breast-Med, Inc.Inventors: Patrick Bolan, Michael G. Garwood, Michael T. Nelson, Daniel A. Halpern
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Patent number: 9158014Abstract: In some embodiments, an apparatus and a system, as well as a method and an article, may operate to rotate a rotatable driving member having at least one driving lobe, and to periodically contact at least one cam on a unitary driven member with the at least one driving lobe during rotation of the rotatable driving member, to set the driven member in motion. This motion can be used to launch an acoustic wave along an axis substantially orthogonal to the axis of rotation of the driving member, where the driving member disposed completely within the driven member. The signature of the acoustic wave can be at least partially determined by the profile of the cam and the rotation rate of the driving member. Additional apparatus, systems, and methods are disclosed.Type: GrantFiled: April 9, 2012Date of Patent: October 13, 2015Assignee: Halliburton Energy Services, Inc.Inventors: Clovis Bonavides, Batakrishna Mandal, Arthur Cheng, Wei Zhang, Philip William Tracadas, Gary Kainer, Hong Li Hou, Burkay Donderici
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Patent number: 9038491Abstract: A vibratory device comprises a rotor and an eccentric weight. The eccentric weight is mounted to the shaft and has a center of mass that is offset from the shaft axis. The vibratory device is configured such that the eccentric weight is in a first rotational orientation relative to the shaft and rotates with the shaft when the shaft rotates in a first direction about the shaft axis and such that the eccentric weight is in a second rotational orientation relative to the shaft when the shaft rotates in an opposite second direction about the shaft axis. The vibratory device is further configured such that the eccentric weight automatically transitions from the first rotational orientation to the second rotational orientation when the shaft is switched from rotating in the first direction to rotating in the second direction.Type: GrantFiled: May 6, 2013Date of Patent: May 26, 2015Assignee: Martin Engineering CompanyInventors: Grant S. Burton, Travis J. Miller
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Patent number: 8919215Abstract: An orbital motion attachment for a die grinder includes a flexible collar mounted at a first end to a locating support ring and the locating support ring being removably secured to the die grinder. A collet has an offset bearing shaft extending from a first end. The collet is connected at a second end to an output shaft of the die grinder and the offset bearing shaft is connected at a second end to an applicator tip. An indexing ring is affixed to a second end of the flexible collar to secure the applicator tip to the offset bearing shaft.Type: GrantFiled: March 7, 2012Date of Patent: December 30, 2014Inventor: Roger C. Keith
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Publication number: 20140326088Abstract: A vibratory device comprises a rotor and an eccentric weight. The eccentric weight is mounted to the shaft and has a center of mass that is offset from the shaft axis. The vibratory device is configured such that the eccentric weight is in a first rotational orientation relative to the shaft and rotates with the shaft when the shaft rotates in a first direction about the shaft axis and such that the eccentric weight is in a second rotational orientation relative to the shaft when the shaft rotates in an opposite second direction about the shaft axis. The vibratory device is further configured such that the eccentric weight automatically transitions from the first rotational orientation to the second rotational orientation when the shaft is switched from rotating in the first direction to rotating in the second direction.Type: ApplicationFiled: May 6, 2013Publication date: November 6, 2014Inventors: Grant S. Burton, Travis J. Miller
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Publication number: 20140283633Abstract: The invention relates to a vibration exciter, in particular for a construction machine, having at least one rotatably supported unbalanced unit with at least one unbalanced element, a rotary drive, a gear arrangement with at least one gear wheel, wherein a rotation generated by the rotary drive can be transmitted by means of the gear arrangement to the at least one unbalanced unit, and a housing, in which the gear arrangement is accommodated. In accordance with the invention an energy-saving and low-maintenance arrangement is achieved in that by means of the gear arrangement an output shaft can be driven that extends out of the housing and in that the at least one unbalanced element is fixed outside of the housing on the output shaft.Type: ApplicationFiled: March 20, 2014Publication date: September 25, 2014Applicant: EURODRILL GMBHInventor: Horst DAMM
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Publication number: 20140260723Abstract: Systems and methods involving reconfigurable rotating masses are disclosed. One embodiment may take the form of a system having a motor and coupled weights attached to the motor. Operation of the motor rotates the coupled weights and the weights are dynamically reconfigurable to change the location of the center of mass relative to an axis of rotation.Type: ApplicationFiled: March 14, 2013Publication date: September 18, 2014Inventors: Colin M. Ely, Avi Hecht
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Patent number: 8813589Abstract: The present invention relates to an eccentric moment stepless adjustable vibrating mechanism comprising a box body.Type: GrantFiled: December 31, 2010Date of Patent: August 26, 2014Inventor: Zhongsheng Tang
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Patent number: 8806691Abstract: The invention provides an electric toothbrush capable of changing a resonant frequency and vibration amplitude of an eccentric shaft. An electric toothbrush of the present invention includes a motor, an eccentric shaft with one end fixed to a rotation shaft of the motor, and a stemserving as a vibration transmitting component having a bearing for supporting the other end of the eccentric shaft for transmitting vibration generated in accordance with rotation of the eccentric shaft to a brush portion. In the electric toothbrush, the eccentric shaft is formed so that a gravity center position is movable at least in one direction among a direction in which a distance to a shaft center is changed and an axial direction.Type: GrantFiled: March 15, 2013Date of Patent: August 19, 2014Assignee: Omron Healthcare Co., Ltd.Inventors: Toshiyuki Iwahori, Akitoshi Miki, Jun Shimoyama, Takashi Torihama
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Publication number: 20140189957Abstract: A bed vibration system to provide controllable vibrations beneath a mattress, which is located on a bed, the system comprising: a frame attachable to the bed by at least four suspension modules; at least two vibration modules, each vibration module having a rotatable element; at least two travel tracks attachable to the frame, the travel tracks configurable to have the at least two vibration modules respectively displaceable thereupon; and a vibration module control unit configurable to control vibrations and displacement of the respective vibration modules.Type: ApplicationFiled: May 30, 2012Publication date: July 10, 2014Inventor: David Mijan
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Patent number: 8769949Abstract: Disclosed is a control system and method for controlling a superturbocharged engine system in various operation modes. Throttle control mode may idle the superturbocharger during low and medium engine loads, so that boost is not created in the intake manifold. During high engine load conditions (open throttle), boosting occurs in response to the driver, operator, or control system requesting increased engine loads. For transient control mode, the control system may respond to transient conditions in response to engine speed and load so that the engine does not bog down or overcome vehicle traction limits. The control system may also predict future operating points.Type: GrantFiled: July 26, 2011Date of Patent: July 8, 2014Assignee: Vandyne Superturbo, Inc.Inventors: Ed VanDyne, Jared William Brown, Volker Schumacher, Christopher J. Chadwell
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Publication number: 20140174218Abstract: A method and system for inducing a planned or controlled avalanche is disclosed. The system includes one or more sources of vibration mounted within a mass which is mounted within an aperture in the ground in the area where an avalanche has been determined to be likely to occur. The source of vibration is a drive system from a vehicle (such as a golf cart), preferably modified to increase the vibration and mounted in a vibrating mass (such as a concrete culvert). The vibrating mass may be mounted within an aperture in the ground and secured in place using concrete to increase the vibration-transmitting characteristics of the vibrating mass. An electrical system including a source of electricity and a storage device, as well as controls, is mounted separate from the source of vibration and the vibrating mass (e.g., the concrete culvert) to isolate portions of the electrical system (including the storage device) from some of the effects of the vibration.Type: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Inventor: James R. Hughes
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Publication number: 20140137677Abstract: An inertia pump is connected to and actuated by the vibration of a vibratory device to pump lubricant to lubricate internal components of the vibratory device. The inertia pump has a bottom end cap with an inlet in fluid communication with the vibratory device, a top end cap with an outlet for delivering the lubricant to lubricate components of the vibratory device, a tube disposed between and sealingly engaging the bottom end cap and the top end cap, and a piston having a lubricant passageway. The piston is slidably disposed within the tube downstream of the bottom end cap and upstream of the top end cap. Vibration of the vibration device causes the piston to oscillate within the tube to draw lubricant from the vibration device which passes through the lubricant passageway in the piston, and delivers lubricant to lubricate internal components of the vibration device.Type: ApplicationFiled: November 19, 2012Publication date: May 22, 2014Applicant: American Piledriving Equipment, Inc.Inventor: John L. White
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Patent number: 8720162Abstract: A motor-driven machine tool comprises a tool driven in a rotating fashion, a drive shaft driven by a drive unit and an output shaft for holding the tool. According to the invention, the rotating motion of the drive shaft can be transferred to the output shaft by way of an eccentric coupling device. A mass balancing device is provided for smoothing out vibrations, which has a stroking mass part moveably mounted in a carriage guide and impinged by an eccentric member driven by one of the shafts. The stroking mass part executes a rotary smoothing motion.Type: GrantFiled: November 11, 2008Date of Patent: May 13, 2014Assignee: Robert Bosch GmbHInventor: Adolf Zaiser
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Patent number: 8656795Abstract: An easily switchable automatic transmission eccentric shaft includes an input shaft over which a movable centrifugal saddle is fit. An elastic body is arranged between the centrifugal saddle and the input shaft. The centrifugal saddle is provided at one side thereof with an openable weight assembly, which selectively moves the centrifugal saddle with respect to the input shaft. A balance weight is coupled to one side of the weight assembly. The balance weight forms a limiting structure that includes two retention members and an elastic element between the retention members. The limiting structure helps controlling preciseness of variable transmission, helps increasing available transmission positions, facilitates the weight assemblies returning back to home positions, and is suitable for high horsepower applications.Type: GrantFiled: December 16, 2010Date of Patent: February 25, 2014Inventor: Shih-Chou Wen
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Patent number: 8590408Abstract: A vibration exciter for a ground compactor comprises an exciter shaft having at least one exciter weight disposed thereon and having at least one turnover weight which is disposed so that it can rotate relative to this exciter shaft. A ground compactor having such a vibration exciter is also disclosed.Type: GrantFiled: May 26, 2011Date of Patent: November 26, 2013Assignee: BOMAG GmbHInventors: Gilbert Stein, Alexander Dykhnich
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Publication number: 20130283941Abstract: A method comprises accessing a vibratory device having a rotor and first and second eccentric weights. The first weight is initially attached to the rotor's shaft in a manner such that its center of the mass is offset from the shaft in a first radial direction. The second weight is initially attached to the shaft in a manner such that its center of the mass is also offset in the first radial direction. The method further comprises reorienting the first and second weights relative to the shaft in a manner such that their centers of the mass are offset in a second radial direction. By performing these steps, the location of greatest bearing surface wear rate on the shaft is circumferentially relocated about the shaft. As such, the service life of an eccentric weight vibratory device is thereby extended.Type: ApplicationFiled: April 27, 2012Publication date: October 31, 2013Applicant: MARTIN ENGINEERING COMPANYInventor: Grant S. Burton
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Publication number: 20130233101Abstract: The present invention relates to an eccentric moment stepless adjustable vibrating mechanism comprising a box body.Type: ApplicationFiled: December 31, 2010Publication date: September 12, 2013Inventor: Zhongsheng Tang
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Publication number: 20130055835Abstract: The present invention relates to a vibration exciter for generating a directed excitation vibration, especially for installation in a vibration tamper, and a machine with such a vibration exciter, comprising at least two parallel extending unbalance shafts which are rotatable against one another, on which at least one respective fixed unbalance mass and at least one respective movable unbalance mass are arranged, with the positions of the movable unbalance masses on the unbalance shafts being variable by way of an adjusting device for adjusting the amplitude of the exciter vibration, and with the adjusting device comprising a central adjusting element for amplitude adjustment which acts on the movable unbalance masses of the two unbalance shafts, which central adjusting element is arranged coaxially to a rotational axis (AS) about which the vibration exciter is rotatable for the purpose of vector adjustment of the excitation vibration.Type: ApplicationFiled: August 3, 2012Publication date: March 7, 2013Applicant: BOMAG GMBHInventors: Christian Schmidt, Jens Wagner
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Publication number: 20120125824Abstract: The mechanical vibrator is applied to vibrating screens or other equipment and comprises a bearing housing to be affixed to a side wall of the equipment, to carry a pair of bearings which support a shaft having an inner end portion and an outer end portion which respectively affix a first and a second counterweight. The first and the second counterweights have respective first and second eccentric masses of different values and which are positioned and dimensioned so that the first and the second counterweight generate equal loads on the bearings. The second counterweight is constructed to selectively and removably attach a third counterweight presenting a third eccentric mass maintained aligned with the center line of the bearing housing, to provide a variation of the total eccentric mass of the vibrator, without changing the balance of the load distribution on the bearings.Type: ApplicationFiled: December 21, 2011Publication date: May 24, 2012Applicant: METSO BRASIL INDUSTRIA E COMERCIA LTDAInventor: Andrzej Niklewski
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Patent number: 8156832Abstract: The mechanical vibrator is applied to vibrating screens or other equipment and comprises a bearing housing (10) to be affixed to a side wall (2) of the equipment (1), to carry a pair of bearings (20) which support a shaft (30) having an inner end portion (31) and an outer end portion (32) which respectively affix a first and a second counterweight (70, 80). The first and the second counterweights (70, 80) have respective first and second eccentric masses (M1, M2) of different values and which are positioned and dimensioned so that the first and the second counterweight (70,80) generate equal loads on the bearings (20). The second counterweight (80) is constructed to selectively and removably attach a third counterweight (90) presenting a third eccentric mass (M3) maintained aligned with the center line (CL) of the bearing housing (10), to provide a variation of the total eccentric mass of the vibrator (V), without changing the balance of the load distribution on the bearings (20).Type: GrantFiled: July 4, 2007Date of Patent: April 17, 2012Assignee: Metso Brasil Industria E Comercia LtdaInventor: Andrzej Niklewski
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Publication number: 20110209571Abstract: The mechanical vibrator is applied to vibrating screens or other equipment and comprises a bearing housing (10) to be affixed to a side wall (2) of the equipment (1), to carry a pair of bearings (20) which support a shaft (30) having an inner end portion (31) and an outer end portion (32) which respectively affix a first and a second counterweight (70, 80). The first and the second counterweights (70, 80) have respective first and second eccentric masses (M1, M2) of different values and which are positioned and dimensioned so that the first and the second counterweight (70,80) generate equal loads on the bearings (20). The second counterweight (80) is constructed to selectively and removably attach a third counterweight (90) presenting a third eccentric mass (M3) maintained aligned with the center line (CL) of the bearing housing (10), to provide a variation of the total eccentric mass of the vibrator (V), without changing the balance of the load distribution on the bearings (20).Type: ApplicationFiled: July 4, 2007Publication date: September 1, 2011Applicant: METSO BRASIL INDUSTRIA ECOMERCIO LTDAInventor: Andrzej Niklewski
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Publication number: 20110132114Abstract: The present invention relates to a vibration apparatus, a hand-held mobile device and a method for operating the vibration apparatus with which the time to obtain a detectable vibration effect is reduced while still being able to provide also a strong vibration effect. The vibration apparatus comprises a first weight member; a second weight member; a driving section coupled to said first weight member and operable to rotate at least said first weight member around a rotation axis; and a coupling mechanism adapted to provide coupling between said first weight member and said second weight member so that in a first state said first weight member is rotated by said driving section and in a second state said first weight member and said second weight member are rotated by said driving section.Type: ApplicationFiled: December 3, 2009Publication date: June 9, 2011Applicant: Sony Ericsson Mobile Communications ABInventor: Georg Siotis
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Patent number: 7950379Abstract: An apparatus for moving a mass, the apparatus having an arcuate track, a clamping member attached to a section of the arcuate track, an arm assembly pivotably connected to the clamping member, and a counterweight connected to the arm assembly. A projectile for use in a mass accelerator having an arcuate track, the projectile having a core and at least one of a low-friction layer, a propellant layer, and a polycarbonate layer.Type: GrantFiled: July 16, 2008Date of Patent: May 31, 2011Assignee: Advanced Launch CorporationInventor: Derek A. Tidman
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Publication number: 20110067510Abstract: An eccentric vibrating amplitude device of a vibrator includes an eccentric unit on at least one end of an extended shaft of a reversible motor and includes a balance block located at an innermost location of the eccentric unit mounted on a shaft and an eccentric block located at the outermost location. on the shaft. The balance block and eccentric block include an eccentric round hole block and eccentric blocks for receiving the shaft. When mounted on the extended shaft of a reversible motor, the rotational angle between the balance block and the eccentric block and the torque on the motor selectively changes when the motor rotates in a positive or a negative direction. Hence there is provided a selectable or variable vibrating amplitude intensity.Type: ApplicationFiled: December 1, 2010Publication date: March 24, 2011Inventor: Huan Yao PENG
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Patent number: 7798029Abstract: Disclosed is a vibration apparatus for generating a spheroid wavelength by eccentrically rotating a rotation shaft using an eccentric weight.Type: GrantFiled: February 14, 2007Date of Patent: September 21, 2010Inventor: Doo Sang Kim
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Publication number: 20100050795Abstract: A vibration generator has at least two shaft groups, on which at least two imbalance groups are disposed, and which are connected with at least one drive by means of which they are put into rotation. The shaft groups are connected with the at least one drive so that the speed of rotation of one shaft group amounts to a multiple of at least one other shaft group, and the shaft groups demonstrate a significantly different static moment with regard to one another. At least one of the shaft groups is connected with a phase shifter, by way of which the static moment of the shaft group can be adjusted.Type: ApplicationFiled: July 7, 2009Publication date: March 4, 2010Inventors: Christian Heichel, Albrecht Kleibl
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Publication number: 20090181727Abstract: A vibrator assembly includes an electric motor, a shaft driven by the motor, and a cylindrical weight coaxially positioned on the shaft free end, wherein the cylindrical weight has a center of gravity that is radially offset from the shaft axis. The cylindrical weight includes a first portion that is lighter in weight than a second portion. When the vibrator assembly is installed within an electronic device, the cylindrical shape of the weight limits the amount of shaft deflection that can occur when the electronic device is dropped or subjected to other impact forces.Type: ApplicationFiled: March 25, 2009Publication date: July 16, 2009Inventors: Gustav Fagrenius, Goran Schack
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Patent number: 7554237Abstract: A device for generating forces that are variable and controllable in amplitude, in direction, and in frequency, the device includes two unbalanced rotors (18, 20, 35 to 38) mounted coaxially in a casing (11). The device further includes electromagnetic drive elements for driving a first of the two rotors in rotation relative to the second of the two rotors, and brake elements (43 to 45) for braking the second rotor (20, 36, 38) relative to the casing.Type: GrantFiled: May 24, 2006Date of Patent: June 30, 2009Assignee: EurocopterInventor: Sylvain Clary
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Patent number: 7302871Abstract: The invention relates to an oscillation generating device for use in a soil compacter with a tipping moment compensation device. A second unbalance shaft pair with oppositely rotating unbalance shafts is arranged adjacent to a first unbalance shaft pair as a tipping moment compensation device. Diagonally opposite unbalance shafts rotate in the same direction. In this way, centrifugal forces and torques on the two unbalance shaft pairs reciprocally cancel each other out so that no tipping moment occurs parallel to the axes of rotation of the unbalances.Type: GrantFiled: February 6, 2004Date of Patent: December 4, 2007Assignee: Bomag GmbHInventor: Niels Laugwitz
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Patent number: 7270025Abstract: 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), in order to cause a rotation of the eccentric shaft (2). The force transmission mechanism (12) is connected to the adjusting device (11). The adjusting device (11) incorporates a driving device (20), a transmission (19), a tube sleeve (17) and a guide screw (14) which is rotatably arranged in a threaded bore (16) in a journalling shaft (15) for the roller drum (1). The driving device (20) is connected to the tube sleeve (17) via a transmission (19) for transmitting a rotary movement to the tube sleeve (17).Type: GrantFiled: March 22, 2004Date of Patent: September 18, 2007Assignee: Metso Dynapac ABInventor: Nils-Göran Niglöv
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Patent number: 7213479Abstract: 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 respective vibratory shafts, a rotation controller controlling a range of movement of the rotatable eccentric weights, and an eccentric moment controller which changes an eccentric moment around the vibratory shaft depending on the rotation direction of the vibratory shafts, whereby the vibration state of the roll is switchable between standard vibration and horizontal vibration.Type: GrantFiled: February 24, 2004Date of Patent: May 8, 2007Assignee: Sakai Heavy Industries, Ltd.Inventor: Akira Mitsui
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Patent number: 7171866Abstract: 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 unbalance mass that can move in relation thereto. The position of the partial unbalance masses on the respective unbalance shafts can be actively altered within a large range by adjusting devices. The resulting vibration vector generated by the vibration generator can set in a diverse manner with regard to direction and magnitude.Type: GrantFiled: August 3, 2001Date of Patent: February 6, 2007Assignee: Wacker Construction Equipment AGInventors: Wolfgang Fervers, Martin Schreck, Franz Riedl
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Patent number: 7165469Abstract: 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 demountable cylinder housing provides ready access to the piston and seal assembly which can then be threadably detached and replaced in its entirety.Type: GrantFiled: April 10, 2003Date of Patent: January 23, 2007Assignee: M-B-W Inc.Inventors: Eric A. Niemi, Michael W. Schmitt
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Patent number: 7117758Abstract: 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 adjusting device enables the position of both freely rotating unbalanced masses to be adjusted in such a manner that, during a maximum unbalance action of one of the unbalanced shafts, the unbalance action on the other unbalanced shaft is minimized. The unbalance adjusting device can alter the position of the unbalanced masses whereby rendering possible a to-and-fro movement of the soil compacting device or a compaction when stationary.Type: GrantFiled: September 27, 2002Date of Patent: October 10, 2006Assignee: Wacker Construction Equipment A.G..Inventor: Franz Riedl