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Class 74/87 - Unbalanced weight


Subclass of Class 74 - Machine element or mechanism
Definition: Mechanisms, in which the motion is changed by means of unbalanced
No. of patents: 168
Last issue date: 04/17/2012


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NumberTitleIssue Date
8156832Mechanical vibrator having eccentric masses
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) havi...
04/17/2012
7798029Vibration apparatus for generating spheroid wavelength
Disclosed is a vibration apparatus for generating a spheroid wavelength by eccentrically rotating a rotation shaft using an eccentric weight. The vibration apparatus includes: an electric motor for generating rotation force; a bracket coupled to a coupling member on...
09/21/2010
7347799Antivibration 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
7331701Gearbox for concrete mixer
A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second comp...
02/19/2008
7302871Oscillation generating device
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...
12/04/2007
7270025Adjusting 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
7251962Washing machine with structure for absorbing vibration of driving part
A washing machine with a vibration-absorbing structure for preventing the transfer of the vibration of the driving part is disclosed. The washing machine includes a rotor housing 50 in which a rotor is installed and which is rotatably moved, a driving shaft
08/07/2007
7240800Vibratory sand reclaiming apparatus having normal and reject modes
An attrition mill for reclaiming foundry sand from deposited material having lumps of used foundry sand and included material includes a housing defining a chamber for receiving the lumps of used foundry sand and included material. A base is disposed within the hous...
07/10/2007
7223093Coupling structure between injection driving screw shaft and electric motor in injection device
A screw shaft for driving an injection screw driving body in a motor-driven injection device is coupled to a motor shaft of an electric motor in engagement of splines. A spline for the motor shaft engaging with a spline disposed at the outer periphery at a shaft end...
05/29/2007
7213479Vibratory 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
7182170Gerotor and bearing system for whirling mass orbital vibrator
A gerotor and bearing apparatus for a whirling mass orbital vibrator which generates vibration in a borehole. The apparatus includes a gerotor with an inner gear rotated by a shaft having one less lobe than an outer gear. A whirling mass is attached to the shaft. At...
02/27/2007
7173355Bar-type vibration motor
A bar-type vibration motor has a stator unit including a body and a magnet attached in the body; a rotor unit including a rotary shaft having one end fixed to an eccentric weight and the other end fixed to a stationary member, a portion of the rotary shall adjacent ...
02/06/2007
7172241Dashboard support with vibration-damping feature
A dashboard support for a motor vehicle includes a support beam extending between A pillars of a vehicle body. Interacting with the support beam is an active arrangement for implementing a vibration damping. The active arrangement includes a gyroscopic oscillator un...
02/06/2007
7171866Controllable 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
7165469Shift 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
7137211Drying cabinet shaker mechanism
A clothes drying cabinet is provided with a shaker assembly including a bar suspended in the cabinet for supporting clothes hangers. A motor is mounted adjacent the bar and has a drive shaft. A drive weight is eccentrically mounted to the drive shaft of the motor so...
11/21/2006
7117758Vibration 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
7109619Damper support assembly for a supercritical drive shaft
A support system, a bracket assembly, and a damping member for use in supporting a rotating shaft. A support system including a fixed bracket; a bracket assembly; and a bearing. The bracket assembly having a first damping member having a first fixed end and a second...
09/19/2006
7089823Vibratory 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
7084535Deflection limiter for vibrator motor shaft
A deflection limiting member (110, 310) or a deflection limiting mechanism (512, 514) is used to limit deflection of a motor shaft (102) of a vibrator (105, 305, 505) in a portable electronic device (104,304, 504). The deflection l...
08/01/2006
7066681Shaft 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
7063748Methods for coating particles and particles produced thereby
Methods of coating core materials by providing target materials and core materials; ablating the target materials to form ablated particulate target materials; and coating the core materials with said ablated particulate target materials; wherein the method is perfo...
06/20/2006
7059802Vibratory 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
7054775Digitizing system and rotary table for determining 3-D geometry of an object
A digitizing system and rotary table for determining the three dimensional geometry of an object is described. An apparatus includes at least one sensor that detects information describing the three-dimensional geometry of the object and provides the information to ...
05/30/2006
7040171Carrier tape vibrator module
A vibrator module adapted for use in a taper apparatus for advancing carrier tape having a plurality of compartments and for placing parts in the compartments. The vibrator module includes a motor that includes an output shaft that rotates in response to operation o...
05/09/2006
7017679Device 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
7002310Piezo-based encoder with magnetic brake for powered window covering
The position and speed and, in some embodiments, direction of rotation of a motor for turning the rod of an object such as a window covering is determined by placing a braking magnet next to the motor and a piezoelectric element between the braking magnet and motor....
02/21/2006
6998744Motor gear box with grommets
A motor gear box has a direct current motor, a first bevel gear, a second bevel gear, a pinion transfer gear, at least one cluster gear, an output gear, an output shaft, and a collar abutting against the output gear and surrounding the output shaft. The motor gear b...
02/14/2006
6930419Bar type vibration motor
A bar type vibration motor includes a stator unit including a body having a bearing insert groove formed at one end thereof and exposed to the outside, and a magnet attached to the body; a rotor unit including a rotary shaft having one end fixed to an eccentric weig...
08/16/2005
6929421Vibratory 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
6918492Baffle assembly for a sealed shaft on a vibratory apparatus
A sealed wheel case for use on a vibrating aggregate processing device comprises a housing sized to hold a rotatable wheel supported on a shaft, the housing having a base, a peripheral sidewall, and a cover. The cover includes an aperture adapted to receive therethr...
07/19/2005
6829986Compactor
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
6769838Variable 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
6725736Rotatable eccentric arrangement
The present invention relates to a rotatable eccentric element for continuous adjustment of vibration amplitude, for use in, for example, the roll in vibrating rollers. In particular, the invention relates to a rotatable eccentric arrangement adapted for stepless ad...
04/27/2004
6669026Portable screening plant with displaceable eccentric
A vibration-reducing eccentric weight system mounted to the driveshaft of a screen box in a portable screening plant with the eccentric weight system's center of gravity on the driveshaft's axis of rotation. The eccentric weight system includes a weight t...
12/30/2003
6637280Variable vibratory mechanism
A vibratory mechanism is provided with first and second motors connected to first and second eccentric weights. One of the first and second motors is operable to change a phase difference between the first and second eccentric weights to change a vibratio...
10/28/2003
6585595Vibration generating device and input device for game apparatus using the same
Disclosed is an input device (controller) for inputting signals to a game apparatus using a computer. The input device includes a vibration generating device, the vibration state of which can be set in correspondence with the frequency....
07/01/2003
6551020Vibratory mechanism
A vibratory mechanism 26 is provided for a compacting work machine 10. The vibratory mechanism 26 includes a first/outer eccentric weight 50 and a second/inner eccentric weight 80. The second weight 80 has a cavity 88 with a movable mass 90 that when rota...
04/22/2003
6516679Eccentric assembly with eccentric weights that have a speed dependent phased relationship
The eccentric assembly includes a shaft, first and second eccentric weights, and a member. The first and second eccentric weights are rotatably coupled to the shaft such that they generate vibrations which are transferred to the drum assembly of the vibra...
02/11/2003
6454051Vibratory compactor bearing lubrication
An oil lubricating system mounted on a vibrating plate compactor has a center chamber and outer chambers in the housing partitioned by a pair of bearings on the left and the right axially attached to the rotor shaft in the housing, and the oil in the hous...
09/24/2002
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