Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7980536 | Mount for vibratory elements The invention is a mounting system for a vibrational element. The vibrational element has a longitudinal axis, an outer surface and an axial displacement node. The mounting system includes an isolation member which has an isolation surface, an isolating body, and an... | 07/19/2011 |
| 7681869 | Damping apparatus for the damping of vibrations The present invention concerns a damping apparatus for the damping of vibrations in tool holders, machine elements and work pieces in machine tools and in other objects that are exposed to unwanted vibrations. The damping apparatus is adapted to be provided in or on... | 03/23/2010 |
| 7370851 | Damping system of a glove box A damping system of a glove box using a damper and a wire. The damper is attached to the glove box. An end of the wire is fixed to a fastener on a lower panel. Thereby, when a field problem occurs, the damper is mounted and demounted with ease. ... | 05/13/2008 |
| 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 |
| 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 |
| 7270320 | Antivibration element An antivibration element (1) is especially for a portable handheld work apparatus such as a motor-driven chain saw or a brushcutter. The antivibration element includes a coil spring (2) and at least one guide. An end section (7, 8) of the coil s... | 09/18/2007 |
| 7264098 | Harmonic damper for handheld instruments A damper for reducing vibrations in a handheld device, tool and/or instrument may comprise a resilient member and a weight. The resilient member may mounted to any portion of a device having a surface suitable for engaging and retaining the resilient member therein,... | 09/04/2007 |
| 7234379 | Device and a method for preventing or reducing vibrations in a cutting tool An arrangement for reducing vibrations in a tool holder (4) with a cutting tool (3) and has a vibration sensor on the tool holder (4) that is connected to a guide unit (11). The tool holder (4) has further two piezo-electric actuat... | 06/26/2007 |
| 7222702 | Gas spring A gas spring (7) comprises a cylinder main body (20); a rod member (21) slidable to cylinder main body; a gas filled chamber (23) filled with compressed gas and urging the rod member in a first direction; a rod inserting hole (32) ... | 05/29/2007 |
| 7219433 | Adjustable antivibration system, in particular for a hand-held work machine The invention pertains to a handheld implement, in particular a portable chainsaw (100), with a handle housing part (12) that contains at least one carrying handle (10), and with at least one motor housing part (16) that carries a drive u... | 05/22/2007 |
| 7219752 | System and method for damping vibration in a drill string A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define... | 05/22/2007 |
| 7204744 | Hand-operated machine-tool comprising a vibration-damping rotary handle A handheld power tool, in particular a handheld right-angle grinder (10), has an electric motor drive for a motor housing (11) that accommodates a tool and also has a handle (15), which is retained on the motor housing (11) by means of a ... | 04/17/2007 |
| 7152853 | Manually operated implement A manually operated implement such as a chain saw, a parting-off grinder or similar device has an internal combustion engine to drive a tool and a handle arrangement to operate the implement. The handle arrangement is connected to the internal combustion engine via ... | 12/26/2006 |
| 7125211 | Apparatus and method for damping vibration in a machine tool A machine tool for performing a machine tool function including components adapted to cooperate with each other to execute the machine tool function. The machine tool has a number of constituent parts and a number of sheets of damping material. Each component includ... | 10/24/2006 |
| 7028997 | Vibration damping tool A vibration damping tool having the following structure is provided. In the vibration damping tool, a hollow portion is formed in the interior of the distal end portion of a tool body and one end of a weight member is connected to the inner wall surface of the dista... | 04/18/2006 |
| 6976400 | Method and apparatus for damping vibrations in a semiconductor wafer handling arm A method of damping a semiconductor wafer handling arm by attaching a spring and a mass coupled to the spring to form a mass spring system that is tuned to vibrate at a structural resonant frequency of the vibrating wafer handling arm. The spring has temperature ins... | 12/20/2005 |
| 6953187 | Elastomer spring especially for rail vehicles An elastomer spring, particularly for rail vehicles, comprises a core made of metal or plastic; an outer sleeve that also consists of metal or plastic; a cushion made of elastomer material, in the form of a layered spring that is arranged between the core and the ou... | 10/11/2005 |
| 6944958 | Chain saw chain tensioning and braking system A chain saw which includes chain tensioning and braking systems. Tensioning and braking are caused by the presence and control of longitudinal and lateral slits in an elongated support which provides a continuous chain channel guide in its outer circumference. ... | 09/20/2005 |
| 6905114 | Shock absorbing and shock force generating apparatus with shear pin for an oil pump and method therefor A shock absorbing apparatus and method includes a shaft travelling north and south within a tube. The tube is positioned south of a sucker rod. The shaft has a piston head coupled at a south end thereof, which piston head is received in an area of reduced diameter w... | 06/14/2005 |
| 6901666 | Bush cutting machine A bush cutting machine including a prime mover, a cutter and a handle fixed to an operation rod. The handle has left and right end portions carrying grips. Each grip is mounted at a center of gravity of a sum of a mass of a handle portion between a fixed point and a... | 06/07/2005 |
| 6883789 | Machine tool main shaft balancer A machine tool main spindle balancer wherein the annular sealing members of a gas spring that supports the main spindle unit to reduce the load of an elevating mechanism are easily replaceable. A gas spring of a machine tool main spindle balancer comprises a ... | 04/26/2005 |
| 6817598 | Gun brake device The present invention provides a gun brake system adapted to slow the descent of a tool string in a well. In one embodiment, the brake system comprises a brake installed within the well and having a snug fitting restriction and one or more fluid channels extending a... | 11/16/2004 |
| 6779955 | Mechanical contact connection A surface connection between mechanical components having intermediate deformable elements between the connected contact surfaces, shaped as segments of solid or hollow cylinders with straight or curvilinear axes and their cross sections are compressed in the radial... | 08/24/2004 |
| 6761085 | Method and apparatus for damping vibrations in a semiconductor wafer handling arm A vibration damper for a semiconductor wafer handling arm includes a spring and a mass coupled to the spring to form a mass spring system that is tuned to vibrate at a structural resonant frequency of the vibrating wafer handling arm. The spring has temperature inse... | 07/13/2004 |
| 6719503 | Tuned damped absorber support With high speed machine tools, there is a desire to dampen vibrations and to retain the damper mass in proper position. The present invention relates to a tuned damped absorber support providing simultaneous energy dissipation in both horizontal and vertical directi... | 04/13/2004 |
| 6688439 | Vibration damping system and a method of damping vibrations A vibration damping system (8) wherein the system (8) comprises a magnetism generating medium (12) and a magnetism energy dissipating medium (16) whereby, in use, vibration of the magnetism generating medium (12) generates a magnetic field, the magnetism ... | 02/10/2004 |
| 6471425 | Preloaded stabilizer mechanism in a dot matrix printer A preloaded stabilizer mechanism in a dot matrix line printer having a reciprocating carriage is provided to: (1) establish a rigid reference point that prevents the print line of the dot matrix line printer from drifting; (2) eliminate backlash; and, (3)... | 10/29/2002 |
| 6446946 | Polish rod spring II This invention is a shock absorber for a oil well pumping unit. When a oil well is being produced by means of a oil well pumping unit-the pumping unit sits on the ground surface and pumps in an upward and downward motion which works the sucker rod string ... | 09/10/2002 |
| 6375171 | Vibration damper The invention relates to a vibration damper between a housing (4), which holds an internal combustion engine, and a handle (3) fixed on the housing (4). The handle (3) is for holding and guiding the motor-driven chain saw (2) during use thereof. The vibra... | 04/23/2002 |
| 6371460 | Shock absorber A cylindrical stopper for determining a stop position of a workpiece by a contact portion at a tip end of the stopper is mounted to a workpiece transferring device such that the stop position of the workpiece can be adjusted by forward and rearward moveme... | 04/16/2002 |
| 6308940 | Rotary and longitudinal shock absorber for drilling A rotary and longitudinal shock absorbing apparatus with an mandrel therein is connected to a drill string assembly to absorb abnormal longitudinal shocks and abnormal torsional shocks by cooperating hydraulic and mechanical means, while allowing communic... | 10/30/2001 |
| 6148930 | Percussion drill and/or jack hammer with handle spring-buffered against the hammer housing A percussion drill and/or jack hammer has a handle that is spring-buffered against the hammer housing which has at least one straight guiding track running parallel to the longitudinal axis of the hammer. The handle can be moved to a limited extent along ... | 11/21/2000 |
| 6065336 | Oil level detector mounting arrangement An oil level detector mounting arrangement, which includes a mount having a downward tube dipped in the oil in the oil tank of a vehicle, a float floating in the oil in the oil tank and moved along the downward tube, and a circuit board sealed in the down... | 05/23/2000 |
| 6039310 | Method for vibration damping of workpiece transport device driven elements A method serves to actively perform vibration damping of driven elements of workpiece transport devices in and on shaping machines, especially presses and punches. A measured state value of the driven element or one reconstructed by an observer is determi... | 03/21/2000 |
| 5769561 | Levelling head A leveling device with which to orient a workpiece--or tool--affixing upper part relative to a lower part connected to it, the device having at least one adjusting screw of which the shank rotatably passes through the upper part and engages a thread in th... | 06/23/1998 |
| 5765818 | Vibration damping structure for use with a machine tool A vibration damping structure for a machine tool is provided. The structure includes first and second plate members disposed in an opposing spaced apart relationship with one another. A cast structure formed of a polymer concrete extends between the first... | 06/16/1998 |
| 5699865 | Antivibration device for mounting between a motor unit and a handle unit The invention relates to an antivibration device between a motor unit 2 and a handle unit 9 of a portable handheld motor-driven chain saw 1. The antivibration device includes a sleeve-shaped elastic base body 6 having one of its ends 36 in a receptacle 20... | 12/23/1997 |
| 5692736 | Method for vibration damping of workpiece transport device driven elements A method serves to actively perform vibration damping of driven elements of workpiece transport devices in and on shaping machines, especially presses and punches. A measured state value of the driven element or one reconstructed by an observer is determi... | 12/02/1997 |
| 5673591 | Electric cylinder An electric cylinder to reduce shock and damage to itself and a body to be transferred. The electric cylinder includes a rod head having a flange mounted on the distal end of a hollow piston rod, a circular polyurethane rubber plate mounted on a circular ... | 10/07/1997 |
| 5660379 | Pneumatic spring A pneumatic spring for damping movement of a machine part having a guide shaft for performing a stroke. The spring includes a housing containing gas. The housing is formed as a stationary body with a central opening adapted to accommodate the guide shaft.... | 08/26/1997 |
