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Class 74/604 - Vibration dampers


Subclass of Class 74 - Machine element or mechanism
Definition: Units having a device connected thereto for damping vibrations
No. of patents: 130
Last issue date: 05/06/2008


1        
NumberTitleIssue Date
7367303Crankshaft of in-line four-cylinder engine
In a crankshaft of an in-line four-cylinder engine, an arm that is closest to a flywheel has a greater average thickness in a direction of the rotation axis of the crankshaft than those of other arms. Two of the arms that are coupled to both sides of the third journ...
05/06/2008
7305918Juice extractor with counterweight operatively engaged with camshaft
A juice extractor includes an extractor frame and extractor cups relatively moveable for compressing fruit therebetween. A camshaft is mounted for rotation within the extractor frame. A drive cam is mounted on the camshaft and operatively engages an extractor cup fo...
12/11/2007
7303377Apparatus and method of balancing a shaft
An apparatus for balancing a shaft of an aircraft engine preferably includes a plate and the use of standard fasteners. The plate provides mounting for a nose cone, and the balancing apparatus may be accessed from the front of the assembled engine. ...
12/04/2007
7273201Tiltable mountings for payloads
A tiltable mounting as claimed in any of the preceding claims, wherein the lever has a conical shaped roller engaging the cam, the roller being mounted for rotation on the lever about an axis which passes through the pivotal axis of the lever and the conical surface...
09/25/2007
7252060Torsional damper for balance shafts
A drive system for an internal combustion engine including an endless chain connecting a drive sprocket on a crankshaft to a driven sprocket on a camshaft. The drive system is comprised of at least one balance shaft and a torsion bar. The balance shaft has a first e...
08/07/2007
7225693Slide drive device for a press
A slide drive device for a press changes a slide stroke without a changing either a top or bottom dead center position of a slide. The slide drive device allows stroke adjustment without a loss of left-right balance in the slide drive device. An adjusting mechanism ...
06/05/2007
7195094Vibration reduction apparatus
A vibration reduction apparatus for an engine. The vibration reduction apparatus being incorporated into an engine mounting assembly as a connecting member. The engine mounting assembly including an engine block fastened at its bottom to an engine mounting structure...
03/27/2007
7178423Noise and vibration damper for a vehicular driveshaft assembly
A noise and vibration damper for use with a rotatable structure, such as a driveshaft assembly for a vehicular drive train system, includes an inner member, an elastomeric member that extends about the inner member, and an outer member that extends about the elastom...
02/20/2007
RE39487Flywheel assembly for internal combustion engine
A crankshaft assembly for an internal combustion engine includes a crankshaft, an elastic member fixed to the crankshaft, and a flywheel fixed to the elastic member such that the flywheel is supported in an elastic relationship with the crankshaft. The elastic membe...
02/13/2007
7111525Crank shaft
The invention relates to a crank shaft having a guide groove allowing the movement of a crank pin so as to adjust the reciprocating distance of a piston according to the rotating direction. The crank shaft comprises a rotation shaft for inducing the rotating movemen...
09/26/2006
7105939Electrical generator having an oscillator containing a freely moving internal element to improve generator effectiveness
An apparatus and method for providing electrical energy to an electrical device by deriving the electrical energy from motion of the device. In one embodiment, the inventive apparatus includes a novel kinetic electrical power generator (KEPG) consisting of an invent...
09/12/2006
7070526Accessory drive for driving a balance shaft
An engine accessory drive that has a primary drive driveable by a crankshaft of the engine is disclosed. The accessory drive includes a rotational member mounted on a drive shaft and driveable by the primary drive, the drive shaft having an axis of rotation offset f...
07/04/2006
7021268Crankshaft with airflow inducing surfaces
A crankshaft is provided with a plurality of counterweights which are asymmetrically formed so that one surface has a shape which induces a flow of air and oil mist in a preselected and preferred direction. This shape also improves the aerodynamic characteristic of ...
04/04/2006
7004294Vibration absorber assembly
A vibration absorber assembly including a disc shaped housing having a central rotational axis and a plurality of radially elongated cavities, and a plurality of movable masses, each movable mass being housed in, and movable within, one of the plurality of radially ...
02/28/2006
6959780Vibration damping system for an engine mounted on a vehicle
A vibration damping system for an engine mounted on a vehicle has mounting elements attached to frames of the vehicle, through which elements the engine is mounted on the frames, a damping weight provided outwardly of the engine, and a weight support unit fixed at o...
11/01/2005
6951196Reciprocating engine with rocker valve gear
The reciprocating engine comprises a rocker valve gear, pistons which are fastened to a connecting rod and connected by crankshaft journals to a crankshaft, a balancer, and a camshaft which is driven by the crankshaft and in turn actuates rockers, the mentioned elem...
10/04/2005
6945209Torsional vibration damper
A torsional vibration damper for the crankshaft of an internal combustion engine. The damper includes a housing and a damper mass arranged in the housing and embedded in a fluid. The damper mass is joined to the housing by a spring device. The spring device is embod...
09/20/2005
6932292Fishing reel
The invention is to offer a fishing reel having a power transmission mechanism enabling to remove backlash in a gear row with a simple structure. The fishing reel according to the invention has a power transmission mechanism for transmitting driving force so as to d...
08/23/2005
6928971Camshaft adjusting device for internal combustion engines of motor vehicles
A camshaft adjusting device for internal combustion engines of motor vehicles has an intake camshaft adjuster and an exhaust camshaft adjuster driven by an endless drive connected to the crankshaft. The intake and exhaust camshaft adjusters are connected by a gear t...
08/16/2005
6883487Torsional vibration damping apparatus
A torsional vibration damping apparatus, especially a web damper for mounting on a crankshaft of a piston engine, particularly an internal combustion engine for suppression of natural torsion frequencies from crankshafts can now be economically produced. The apparat...
04/26/2005
6883752Vibration damper for aircraft engine
An internal combustion engine for an aircraft is described. The internal combustion engine includes a crankshaft defining first and second ends, a propeller, and a transmission disposed between the first end of the crankshaft and the propeller, operatively connectin...
04/26/2005
6745740Vibration dampening arrangement for internal combustion engines
An internal combustion engine comprises a crankshaft having at least one rod journal and at least one main journal, a cylinder block rotatably supporting the crankshaft, at least one coupling member rotatably coupled to the crankshaft. The at least one coupling memb...
06/08/2004
6688272Crankshaft assembly for enabling engine cylinder deactivation
A crankshaft assembly (18) for a VDIC engine (16) of an automotive vehicle (14) includes a crankshaft (44) integrated within an internal combustion engine (16). The crankshaft (44) has at least two pendulum vibration absorber assemblies (58) integrated th...
02/10/2004
6681708Engine for planing boat
An engine suitable for mounting in a small planing boat, which both lowers the center of the gravity of the boat, and enables a degree of freedom in arranging accessories. Balancers are arranged on the left and on the right of a crankshaft on a parting fa...
01/27/2004
6412366Engine counterweight
An improved counterweight for a crankshaft having a main body which is adapted to rotate about a predetermined axis. The main body includes a major lobe on one side of the axis and a diametrically opposed minor lobe. Two recessed surfaces extend on opposi...
07/02/2002
6352004Working device with mass balancing at the crank mechanism
A working device, especially a ramming device for compacting soil, or a hammer, has a crank mechanism for producing a controlled vibration. The crank mechanism is coupled with a set of springs. According to the invention, the crank disk belonging to the c...
03/05/2002
6179582Oil pump attachment structure for engine
An oil pump attachment structure is provided for an engine. The oil pump attachment structure includes an oil pump 9 coaxially driven by the crankshaft 2. A pump housing 10 of the pump 9 is disposed between a front cover 7 for covering timing chains 5a, 5...
01/30/2001
6167782Engine module locator bushing
A locator bushing member for assembling a damper/pulley member to a crankshaft as part of a modular housing assembly. The locator bushing temporarily secures a damper member to a housing assembly until the housing assembly is secured to the front of a veh...
01/02/2001
6164259Engine balance apparatus and accessory drive device
A balancing mechanism for an engine that has a rotating crankshaft and reciprocating pistons such as those engines used in automobiles, aircrafts, boats, piston-driven compressors, piston-driven slider crank mechanisms, etc. The present balancing mechanis...
12/26/2000
6079383Engine balancer unit
The engine balancer unit includes a first oil pan attaching to the bottom of an engine cylinder block, a second oil pan attaching to the first oil pan to close a bottom of the first oil pan, and a unitary case inserted in the first oil pan to support coun...
06/27/2000
6029541Reciprocating machine with neutralization of free inertial forces
In a reciprocating machine having piston/cylinder units arranged in line, a cam member having diametrically opposed cams is fixed to a crankshaft with the cam member arranged in a central transverse plane. A balancing mass is in contact with the cam membe...
02/29/2000
6026776Internal crankshaft vibration damper
A method and apparatus for internally damping vibration and impulse within a crankshaft utilizes the mass of high density inserts and an energy absorbing medium. By placing the inserts into bores in the counter balance weights and surrounding the inserts ...
02/22/2000
5983752Adjustable counterweight system for a machine for forming concrete blocks, pavers or the like
An adjustable counterweight apparatus for use in vibratory machines, such as concrete molding machines, where a rotating shaft is engaged with a vibrating or oscillating load. The counterweight includes a first bore for receiving a rotating shaft, and a s...
11/16/1999
5884902Double-mass type dynamic damper having two damper systems
A double-mass type dynamic damper mounted on a rod-shaped oscillating member, which includes a first damper system and a second damper system that are tuned to two different frequency ranges. Each of the damper systems includes a cylindrical mass member d...
03/23/1999
5875752Engine drive train having a front gear train with improved torsional dynamics
An improved engine gear drive train arrangement is provided which effectively minimizes the crankshaft torsional vibrations at the location of the gear train, for engines with a front gear train. A flywheel is resiliently connected to the rear end portion...
03/02/1999
5755145Rotary device for engine
A reduction in size and weight of an engine block is achieved by the described balancer shaft arrangement in which the balancer shaft bearing balancer weights at opposite ends is rotatably mounted in a pipe member fixedly attached to an exterior wall of t...
05/26/1998
5678406Energy generating system
In an energy generating system, which is preferably suitable for satellites and space stations, a total of four Stirling engines are combined together into a cross-shaped unit, in the center of which is arranged a cross-gear drive that is acted upon by th...
10/21/1997
5650684Rotating body and machines incorporating same
In a rotating body or machinery that is equipped with at least one such rotating body, the power loss resulting from the inertial force, which is an internal force caused by the rotation of the rotating body, contributes to mechanical inefficiency, as wel...
07/22/1997
5592386Method and apparatus for the detection of reciprocating machine faults and failures
In a method and apparatus for detection of reciprocating machine faults and failures, data representing velocity variation waveforms of a reciprocating machine having a plurality of cylinders is acquired. The acquired data is transformed using a computer ...
01/07/1997
5560267Camshaft vibration damper
A camshaft vibration damper comprises an inertia ring having a friction clutch surface disposed in driving contact with a complementary clutch surface and a spring for biasing the clutch surfaces toward one another. The complementary clutch surface may be...
10/01/1996
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