Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8127904 | System and method for tuning the resonance frequency of an energy absorbing device for a structure in response to a disruptive force The invention is a system and method for automatically adjusting the resonance frequency of an energy absorbing device in response to a disruptive force. By configuring an energy absorbing device for automatic response tuning, utilizing a controller coupled to one o... | 03/06/2012 |
| 8091694 | Actuator arrangement for active vibration isolation comprising an inertial reference mass Actuator arrangement with an actuator (8), a reference mass (22), a spring (24) and a first sensor (26; 42, 43; 32, 36). The actuator (8) applies a force between a first object (2) and to a second object (16; 54). The... | 01/10/2012 |
| 8020677 | Vibration damping device and manufacturing method thereof A vibration damping device including a hollow housing having a fastening frame and a housing main body attached to the fastening frame for providing the hollow housing enclosing a mass member. With the housing main body inserted between top and base plate portions t... | 09/20/2011 |
| 7971692 | Antiseismic pad, device for supporting a structure and use thereof An antiseismic support pad having a base for supporting and holding the pad on a support surface, at least one spherical rolling element mounted to rotate freely about a center of rotation in a bearing secured to the support base, and a support plate resting on the ... | 07/05/2011 |
| 7942251 | System limiting the transmission of mechanical vibrations by frequency filtering Linkage system between a first part and a second part capable of movement relative to each other, incorporating a link capable of transmitting forces between the first and second parts and a frequency control loop for said link incorporating means of measuring a dis... | 05/17/2011 |
| 7726452 | Systems and methods for active vibration damping An active vibration damping system having a supporting spring for addressing a static force from a payload, and an independent actively isolated damper positioned in parallel between a payload and a source of vibration for damping dynamic force from the payload to a... | 06/01/2010 |
| 7717242 | Torsional vibration damper disk A torsional vibration damping disk with a base body which has a circumferential edge on the outside which is partially turned back in order to form receiver spaces for spring elements, in particular for bow spring elements. In order to create a torsional vibration d... | 05/18/2010 |
| 7686144 | Vibration isolation device, arithmetic apparatus, exposure apparatus, and device manufacturing method A vibration isolation device which dampens vibration of an object. The device includes a vibration isolation unit that can be activated in a plurality of vibration isolation modes, an acquisition unit that acquires estimate information associated with vibration of a... | 03/30/2010 |
| 7648008 | Fixing structure for image forming apparatus A second support post supporting a main unit is swingably held by a vibration isolation mechanism on a first support post which is fixedly mounted in a compartment of a vehicle. The second support post supports thereon a first lock for engaging a bracket mounted on ... | 01/19/2010 |
| 7571793 | Actuator arrangement for active vibration isolation using a payload as an inertial reference mass System for and method of active vibration isolation to isolate a payload (57) from earth movements. The system has a body (16; 51), a mass (41) supported by the body (51) by means of at least one spring (45), a further mass (39 | 08/11/2009 |
| 7506735 | Vibration damping and heat transfer using material phase changes A method and apparatus wherein phase changes in a material can dampen vibrational energy, dampen noise and facilitate heat transfer. One embodiment includes a method for damping vibrational energy in a body. The method comprises attaching a material to the body, whe... | 03/24/2009 |
| 7478709 | Vibration damping apparatus A vibration damper apparatus has two substantially freely rotatable inertia members disposed within a rotatable hub. Each of the members has a wide semi-cylindrical portion and a narrow semi-cylindrical portion with the wide portion of the first damper member being ... | 01/20/2009 |
| 7461728 | Active vibration damping system A system (100, 200, 300) for damping vibrations of a vibratory structure (104, 308). The damping system includes an active damper (112, 124, 128, 216), a vibration sensor (116, 208, 208A′-C′), and a controller (120, 212) for co... | 12/09/2008 |
| 7410039 | Tunable vibration absorption device A tunable vibration absorption device is provided that is suitable for active or semi-active vibration absorption or damping of vibrations in vibrating structures. It comprises a stack including a force actuator mechanism for generating an axial actuation force and ... | 08/12/2008 |
| 7404324 | Gunhard shock isolation system An inertial measurement unit (IMU) is provided that includes a container that defines a cavity. A sensor suit or ISA having a housing is provided in the container of the IMU. A dampening material is provided between the housing of the ISA and the container of the IM... | 07/29/2008 |
| 7393575 | Sheet molding compound damper component, and methods for making and using the same A damper component for absorbing and dissipating vibration and/or noise resonating from a device is provided. The damper component includes a viscoelastic damper layer, and a continuous constraining layer intimately contacting and encasing the damper layer. The cons... | 07/01/2008 |
| 7383929 | Anti-vibration technique An anti-vibration apparatus includes a first magnet unit arranged on a support target and including a first permanent magnet, and a second magnet unit including a pair of second permanent magnets. The pair of second permanent magnets is arranged to interpose the fir... | 06/10/2008 |
| 7383108 | Vertical acceleration sensing vehicle brake system A vertical acceleration compensator is employed in the braking system of a vehicle wheel that undergoes vertical motion relative to the vehicle frame. The vertical acceleration compensator senses the vertical movement of the vehicle wheel relative to the vehicle fra... | 06/03/2008 |
| 7370829 | Method and system for controlling helicopter vibrations A method/system for controlling helicopter vibrations is provided that includes a vibration canceling force generator for actively generating a vibration canceling force. The system includes a resonant actuator having a natural resonant frequency and a resonant actu... | 05/13/2008 |
| 7368649 | Method and device for adjusting cymbal sound A method of optimizing the sound produced by a musical cymbal is disclosed wherein at least one segment including sound absorbing material having a specific, predetermined shape and thickness is applied to a mapped surface of a cymbal in order to alter the volume, f... | 05/06/2008 |
| 7357380 | Anti-vibration element In order to reduce the formation of inherent vibrations in the coil spring in an anti-vibration element, in particular for a manually operated tool such as a chainsaw, a parting-off grinder or similar device and having a coil spring, an additional mass is positioned... | 04/15/2008 |
| 7354637 | Damper and process thereof A fitting type damper and a process thereof being capable of increasing largely slipping torque in strength are ones that the large slipping torque can be increased not only when the damper is a new product but also after a heat aging test and/or a durability test a... | 04/08/2008 |
| 7355674 | Lithographic apparatus, device manufacturing method and computer program product Additional vibrations are added during the exposure of a substrate so that vibrations occurring during exposure of a plurality of areas on the substrate are substantially uniform. This may improve CD uniformity. ... | 04/08/2008 |
| 7353715 | System, apparatus and method for testing under applied and reduced loads A system which cyclically applies and reduces a load on a test specimen and which can use an apparatus comprising: (a) a frame; (b) a load adjusting section having a fluidic mechanical muscle that contracts and extends in length to cyclically apply and reduce a load... | 04/08/2008 |
| 7332846 | Damping device A damping device for damping speed irregularities of a rotating shaft includes an armature having at least one armature part made of a non-ferromagnetic, electrically conductive material. An exciter configured to permeate the armature part in at least some regions w... | 02/19/2008 |
| 7322569 | Linear drive for vibratory apparatus A two mass vibratory apparatus for processing work material includes a bed defining a transport surface for receiving the objects, an elastic amplifier having a first end connected to the bed and a second end, and a base connected to the elastic amplifier second end... | 01/29/2008 |
| 7320455 | Instrumented platform for vibration-sensitive equipment A platform that includes a vibration sensor located within an inner core of a table. The table may have a first plate that supports a vibration-sensitive payload. The first plate may be separated from a second plate by the inner core. The sensor can be located withi... | 01/22/2008 |
| 7320389 | Three-axis offset damping system The present invention comprises a three-axis damping system employing dampers and springs in spatially oriented arrays to isolate an object against translational forces in any direction as well as rotational forces. The inventive system also is biased in the vertica... | 01/22/2008 |
| 7316389 | Vibration isolation member A vibration isolation member comprising an inner member comprising an outer periphery having a first dimension; an outer member comprising a base and a shroud that extends away from the base, the shroud adapted to overlay the inner member, said shroud defining an in... | 01/08/2008 |
| 7306082 | Passive damping of vibrations in a support structure A support structure supporting a movable component is provided with a vibration damper in the form of at least one cavity in the structure, the cavity being filled with a composite material; preferably a composite material of about 80% butyl rubber and 20% carbon pa... | 12/11/2007 |
| 7303184 | Isolator mount for shock and vibration mitigation A passive isolator mount capable of dissipating shocks and vibrations as either heat or magnetic energy is presented. The passive isolator includes a pair of L-shaped or C-shaped brackets capable of withstanding repeated deflections and strains, energy dissipating l... | 12/04/2007 |
| 7290644 | Vibration absorber with dynamic damper In an engine mount (A) whose axis (X) is oriented in the front to rear direction of a vehicle, a damper weight (12) is embedded within a toroidal stopper rubber (10) fixed at its inner periphery to the rear end of an inner cylinder (2). The damp... | 11/06/2007 |
| 7290642 | Magnetic spring device with negative stiffness A magnetic spring device with negative stiffness contains at least one first pole body combination composed of at least one first, at least one second and at least one third pole body, which each have opposite magnetic poles, with the pole bodies in the combination ... | 11/06/2007 |
| 7289337 | Electronic card with braced structure The field of the invention is that of electronic computers that have to operate in a harsh mechanical environment. One of the main fields of application relates to computers for on-board fixed-wing and rotary-wing aircraft avionics systems operating in a highly vibr... | 10/30/2007 |
| 7288861 | Inertial actuator with multiple flexure stacks An inertial actuator for active vibration control utilizes a single cylindrical actuator module of the “voice coil” type. A moving armature assembly, including a soft iron shell with a tubular sleeve coaxially surrounding a core with two permanent magnets and co... | 10/30/2007 |
| 7285956 | Nuclear magnetic resonance device A nuclear magnetic resonance apparatus includes a nuclear magnetic resonance device for elucidating atomic configuration and molecular structure of a substance based on a decay signal of induced electromotive force caused by resonance precession of nuclear magnetic ... | 10/23/2007 |
| 7284527 | Tuned vibration absorber A tuned vibration absorber is disclosed that includes a base, a spring mounted to the base, and a mass mounted to the spring. The absorber is particularly, advantageous when mounted to a specific vehicle component via a mounting bolt that is already employed to moun... | 10/23/2007 |
| 7281522 | Acceleration sensor status detecting apparatus An acceleration sensor state detecting apparatus for detecting a state of an acceleration sensor provided at a vibrating body includes a calculating method for calculating a difference between measured results of the acceleration sensor obtained per first predetermi... | 10/16/2007 |
| 7281431 | Velocity feedback compensation for force control systems A force control system (50, 300) for actuation of a test object (54, 304) includes a force actuator (52, 356) that is coupled to and applies a force on the test object (54, 304). A velocity signal generator (124, 310) is in a feedb... | 10/16/2007 |
| 7278623 | Vibration control unit and vibration control body A vibration control unit in which a rolling element having a first curved surface that is a convex surface is interposed between a first and second members, and the rolling element is allowed rolling with respect to the first member in the first curved surface there... | 10/09/2007 |
