Did You Know...
...that when IBM conducted a market study of Chester Carlson's invention in 1959, the company concluded that it would take only 5000 units of his new product to saturate the market? IBM therefore declined to be part of the new product introduction. Too bad for IBM. Carlson's invention was the xerography process, and his new product was the beginning of the Xerox Corporation. It is estimated that every day, worldwide, 3,000,000,000 copies are made!!
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| Number | Title | Issue Date |
| 8376868 | Rotation shaft vibration damping mechanism A vibration damping mechanism of a rotation shaft that is not likely to be subject to the limitation in layout and that is capable of stably maintaining damping properties by a frictional contact portion without variation for a long term is provided. The vibration d... | 02/19/2013 |
| 8323118 | Dynamic damper for hollow rotating shaft In order to achieve downsizing, and to prevent a cleaning fluid from staying inside, a dynamic damper for a hollow rotating shaft is provided with a mass body floatingly inserted to an inner periphery of the hollow rotating shaft, of which a vibration is to be reduc... | 12/04/2012 |
| 8167730 | Tuned absorber A shaft assembly includes a shaft member having an inside surface and defined by an axis, an absorber assembly disposed within the shaft member and including a cantilever device spacing a mass member away from a base and including damping material disposed around th... | 05/01/2012 |
| 8057315 | Shaft assembly A shaft assembly, comprising: a generally hollow shaft having first and second ends and at least one internal tube positioned within the shaft so as to be adapted to be placed under tension to control the natural frequency of the shaft. The shaft assembly has a pred... | 11/15/2011 |
| 8038540 | Tuned mass damper for rotating shafts The apparatus relates to a vibration absorber for mounting onto the outer circumference of a rotating shaft or axis having an inner part (3) of substantially resilient material for abutting against the outer circumference of the shaft or axis, and an outer pa... | 10/18/2011 |
| 7997989 | Balanced driveshaft assembly and method A balanced driveshaft assembly that includes a driveshaft and a composite weight. The driveshaft has a shaft member and a pair of cardan joints that are coupled to the opposite ends of the shaft member. The shaft member is formed of a first material. The composite w... | 08/16/2011 |
| 7946925 | Dynamic damper A dynamic damper in which the inner diameter (D2) of a first hole part formed at the axial one end part of a body part overlapped with a weight part in the radial direction is set smaller than the inner diameter (D3) of a second hole part formed at the... | 05/24/2011 |
| 7914383 | Mechanical transmission system with a magnetic damper for a rotorcraft The invention relates to a rotorcraft transmission system that comprises both a transmission shaft (21), and electromagnetic induction members (30, 31) of an active magnetic damper that extend around the shaft and that co-operate therewith to determine... | 03/29/2011 |
| 7806774 | Magnetically-damped supercritical transmission system A mechanical transmission system for a rotorcraft, including a supercritical transmission shaft and an active magnetic damper secured to the structure of the rotorcraft via a mechanical damper is provided. ... | 10/05/2010 |
| 7749086 | Propeller shaft In a state in which a dynamic damper and paper dampers are installed to an inner portion of a first propeller shaft, there is provided a structure in which inclined end portions in an inner side in a diametrical direction of the paper dampers opposing to an inner we... | 07/06/2010 |
| 7713132 | Propeller shaft A propeller shaft with a dynamic damper and a tubular wound paper damper in an inner portion of the propeller shaft. The dynamic damper provided with a ring member at an outer side in a diametrical direction and a weight member elastically retained in an inner side ... | 05/11/2010 |
| 7549927 | Tunable damper for a torque transferring assembly A tunable damper for a torque transferring assembly having a tubular shaft including an inner surface defining an elongated cavity includes an input channeling portion and an output channeling portion, wherein each channeling portion is formed from a first predeterm... | 06/23/2009 |
| 7438612 | Propeller shaft apparatus A paper tube of a propeller tube 12 is made by winding a single faced corrugated fiberboard 16 in which a wavy corrugating medium 16b is fixed to one side of a flat linerboard 16a so that the corrugating medium 16b... | 10/21/2008 |
| 7416491 | Internal absorber for a shaft assembly An absorber for use within a shaft assembly of a vehicle is disclosed. The absorber includes at least one cantilever device and at least one constrained layer device. Both devices are disposed within a tube. The absorber is capable of being tuned to specific frequen... | 08/26/2008 |
| 7370872 | Rigid vehicle axle with integral trailing arms In a rigid vehicle axle comprising an axle beam with axle journals forming wheel carriers arranged at the ends thereof, and at least two trailing arms rigidly fixed to the axle beam, each half of the rigid vehicle axle comprises an axle beam section, a trailing arm ... | 05/13/2008 |
| 7371042 | Method and apparatus for balancing gas turbine engines A method, system, and balanced rotating assembly are provided for field balancing an assembly including a power turbine. The method, system and assembly includes coupling the power turbine to a load, identifying a first balancing plane that is aft of the power turbi... | 05/13/2008 |
| 7367457 | Device for the separation of non-magnetizable metals and ferrous components from a solid mixture and method for operating such device In an arrangement which including a motor-driven system for the separation of non-magnetisable metals, vibrations and resonances which generally are present in such arrangement, are eliminated. This is accomplished by utilizing a drum mounted on and rotating about a... | 05/06/2008 |
| 7361092 | Balance assembly for coupling first and second rotating members A flange member is disclosed for a balance assembly that includes a first rotating element coupled to a second rotating element. The flange member includes a main body exhibiting a predetermined imbalance vector when rotated about an axis of rotation. The flange mem... | 04/22/2008 |
| 7357230 | Damper and automobile seat having the damper A damper (1) has silicone-based unvulcanized rubber (4) interposed between a housing (2) and a shaft (3) which are disposed in such a manner as to be relatively rotatable about an axis (A) in (R) directions with respect to each other, and... | 04/15/2008 |
| 7341550 | Roll, in particular middle roll of a calendar, and calendar Roll and calender including the roll that includes a roll jacket structured and arranged to surround an interior space. Roll also includes an absorber arrangement having at least one passive vibration absorber located within the interior space. The instant abstract ... | 03/11/2008 |
| 7335139 | Incremental weight system The present invention provides an incremental weight system for use with a weight stack of an exercise machines. As described herein, the incremental weight system enables users to incrementally increase the lifting weight, by adding weights that weigh less then the... | 02/26/2008 |
| 7334312 | Method of forming axles with internally thickened wall sections A method for forming a variable wall thickness axle or tube with internally thickened wall sections comprises extruding a tubular metal blank within an elongated die. An elongated punch pushes the blank through the die. The punch has an end abutting and pushing the ... | 02/26/2008 |
| 7322450 | Rotating damper An adequate rotation angle is ensured and any member is not damaged due to fluid resistance even with use of highly viscous fluid. A rotating shaft (2) is provided inside a casing (1) having first divider walls (5) provided on its inner peripher... | 01/29/2008 |
| 7321742 | Image forming apparatus, drum unit, image forming module, and method of insertion and removal of a damper into and from an image carrier drum An image forming apparatus includes a photoreceptor belt formed by either a belt or a thin-walled cylinder. A charging unit that sets bias characteristics of the photoreceptor belt has an arrangement to approach towards the photoreceptor belt. A damper is provided o... | 01/22/2008 |
| 7320381 | Propshafts with honeycomb core dampers A propshaft assembly includes a shaft structure having a hollow cavity and an insert member being positioned within the hollow cavity and engaging the shaft structure. The shaft structure vibrates in response to receipt of an input of a predetermined frequency such ... | 01/22/2008 |
| 7303377 | Apparatus 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 |
| 7267740 | Vibration-damping device for vehicles and method of manufacturing the same A vehicle vibration-damping device including a rigid housing and an independent mass member housed in the housing and having a metallic mass of circular shape in section and a rubber elastic body layer adhered to the metallic mass. A distance of a gap between opposi... | 09/11/2007 |
| 7264096 | Rotary damper A rotary damper includes a driven rotary member having a driven rotary part for engaging a driving member, and a stationary support member for rotatably supporting the driven rotary member. A housing is disposed between the stationary support member and the driven r... | 09/04/2007 |
| 7264097 | Dynamic damper A dynamic damper including: a mass member; a support frame member having a substantially rectangular support frame portion surrounding the mass member with a given gap distance therebetween and a pair of support sides opposed to each other in a first direction with ... | 09/04/2007 |
| 7258529 | Securing assembly A securing assembly comprises a first rotatable member defining a first recess. The assembly also includes a second rotatable member defining a second recess. The first recess has an engagement formation. Securing means are locatable in the first and second recesses... | 08/21/2007 |
| 7251962 | Washing 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 |
| 7250699 | Turbine generator vibration damper system The invention relates to the vibration damper systems (here, method and apparatus) for active removal of beyond-normal internal vibrations from turbine-generator-sets [T-G-Ss]. The invention relies on dynamic forces generated by at least a pair (when symmetrically p... | 07/31/2007 |
| 7234916 | Method and apparatus for balancing gas turbine engines A method and apparatus is provided for field balancing an assembly including a power turbine. The method includes coupling the power turbine to a load, identifying a first balancing plane that is aft of the power turbine, and identifying a second balancing plane tha... | 06/26/2007 |
| 7236855 | Method for compensating and out-of-balance condition of a rotating body In a method for compensation of an out-of-balance condition of an imaging data acquisition device, rotatable around a patient opening of a stationary unit of a tomography apparatus, such as an x-ray computed tomography apparatus or an ultrasound tomography apparatus... | 06/26/2007 |
| 7231822 | Machine and method for balancing a member during rotation A machine for balancing a rotating member includes hard bearing balancing apparatus for determining the magnitude and circumaxial location of imbalance. A sensor responds to the position of the rotating member. A computer receives signals from the balancing apparatu... | 06/19/2007 |
| 7222823 | Payload adapter A payload adapter consists of a body that when hollow includes a plurality of stiffeners—radial and/or circumferential—or alternatively a core for carrying shear loads. The body may include a first annular face sheet, a second annular face sheet and a plurality ... | 05/29/2007 |
| 7216723 | Pulse torque generator and power tool having the same A pulse torque generator utilizing a magnetic coupling, and an electric power tool provided with the pulse torque generator. The pulse torque generator includes an input shaft extending in its axial direction and having a hollow section providing a hollow space, and... | 05/15/2007 |
| 7214135 | Drive shaft having a damper insert A damper insert for assembly in a tubular drive shaft of a motor vehicle includes a tubular sleeve, a helically wound, resiliently deformable wiper secured to the sleeve, and a corrugated winding secured to the sleeve. The wiper includes an arch that spans mutually ... | 05/08/2007 |
| 7204762 | Self dampening rotary shaft A rotary shaft may include a multi-piece liner for absorbing vibrations caused by rotational energy generated by the rear axle and/or clutch of a motor vehicle. ... | 04/17/2007 |
| 7204320 | Active rotational balancing system for orbital sanders A system for active dynamic balancing of a rotating tool driven by a motor having a shaft supported by a first and second bearing on opposing sides of the motor includes an acceleration sensing assembly configured to sense radial accelerations on the shaft producing... | 04/17/2007 |
