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A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 8151953 | Suspension and damping device for motor vehicles The invention relates to a suspension and damping device (1) for load bearing and sprung wheel support and for damping suspension movements in a motor vehicle, having at least one spring cylinder (2) having a piston (6) which is guided in a cyli... | 04/10/2012 |
| 8118144 | Hydraulic dampers with pressure regulated control valve A suspension damper includes a housing bounding a main chamber. A hydraulic fluid is disposed within the main chamber. A piston rod is selectively movable between an advanced position wherein a portion of the piston rod is advanced into the main chamber and a retrac... | 02/21/2012 |
| 8037982 | Hydraulic shock absorber for vehicle A shock absorber has a spring positioned within a chamber. The spring provides a spring force on a piston that offsets a hydraulic force such that the forces on the piston are generally balanced when a vehicle is at rest. ... | 10/18/2011 |
| 7926633 | Compact shock absorber for an aircraft undercarriage, and an undercarriage including such a shock absorber The invention relates to a shock absorber for an aircraft undercarriage, the shock absorber comprising a main cylinder in which a rod is mounted to slide telescopically, the shock absorber having one or more pneumatic chambers filled with gas, a supply of hydraulic ... | 04/19/2011 |
| 7913823 | Hydraulic shock absorber In a front fork in which a partition wall member is provided in an inner periphery of an inner tube, a working fluid chamber is comparted under the partition wall member and an oil reservoir chamber is comparted over the partition wall member, a main suspension spri... | 03/29/2011 |
| 7441638 | Front fork A front fork, which is interposed between a vehicle body and an axle to restrain a change in vehicle attitude, comprises a fork body (101) including a reservoir chamber (106) partially filled with gas and performing an expansion and contraction operati... | 10/28/2008 |
| 7413064 | Front fork One of a pair of the hydraulic shock absorbers each mounted in the right and left sides of a front wheel for a two-wheel vehicle includes a contraction-side damping valve (5a) disposed in a flow passage (11) communicating a rod-side oil chamber ... | 08/19/2008 |
| 7377372 | Telescopic fork leg A telescopic fork leg with damping system comprising piston and piston rod arrangements. The arrangements perform longitudinal shift motions in a medium-containing chamber. The chamber is situated in a tubular part belonging to the damping system. The piston rod arr... | 05/27/2008 |
| 7331591 | Transportation protection for cable ends on shock absorber struts A transportation protection for cable ends on shock absorber struts of motor vehicles, wherein the cable end exits from a hollow piston rod. In order to create protection which protects the cable end from damage during transportation, it is proposed that a cover pla... | 02/19/2008 |
| 7328562 | Stirrup with gas-filled shock absorber A stirrup (210,310) includes a footrest (214,314) as well as a hanger (216,316) for suspending the stirrup from a saddle. A shock absorber (350) is provided for the footrest (314) and has passages (364) which allow the shock... | 02/12/2008 |
| 7316409 | Front fork of bicycle with buffer apparatus A front fork of a bicycle, which has damping function, has a lower fork having a closed bottom. An upper fork tube is inserted into the lower fork for reciprocation relative to the lower fork, which has a nozzle at a top thereof. Oil is received in a space between t... | 01/08/2008 |
| 7314124 | Vibration damping apparatus A damping apparatus for damping vibrations in a vibrating system including a piston which is reciprocally movable in a hydraulic fluid filled damper chamber, piston movement in either direction of movement being resisted by fluid pressure in the damper chamber behin... | 01/01/2008 |
| 7308976 | Hydraulic dampers with pressure regulated control valve A suspension damper includes a housing bounding a main chamber. A hydraulic fluid is disposed within the main chamber. A piston rod is selectively movable between an advanced position wherein a portion of the piston rod is advanced into the main chamber and a retrac... | 12/18/2007 |
| 7309063 | Gas-filled spring for a vehicle, such as a motor cycle, and valve for such a gas-filled spring A gas-filled spring (1) operates using gas (13, 14) and may be intended for a motor cycle. The gas-filled spring comprises a cylinder (2) and a piston (4), said cylinder comprising a compression chamber and a return chamber (8, 9).... | 12/18/2007 |
| 7278252 | Nonslip article for a stirrup A stirrup includes a footrest as well as a hanger for suspending the stirrup from a saddle. A shock absorber is provided for the footrest and has protrusions which impart a nonslip character to the shock absorber. The protrusions have respective ends which face away... | 10/09/2007 |
| 7261194 | Bicycle suspension assembly with isolated inertia mass A bicycle suspension assembly including a damper body and having a valve, including a moveable inertia mass, movable between first and second positions to selectively alter the compression damping rate of the bicycle suspension assembly is described. The valve and e... | 08/28/2007 |
| 7260971 | Apparatus for locking a sheet of metal suitable to be shaped in a press An apparatus for locking a sheet of metal to be shaped in a press, comprising at least one fluid-operated actuator for translational motion of a first sheet presser, adapted to support, in an initial operation step a sheet of metal to be shaped, arranged above a fir... | 08/28/2007 |
| 7234576 | Damper, in particular for motor vehicle A damper, in particular for motor vehicle, includes a cylinder containing a hydraulic fluid, a main piston (1) actuated by a rod (3) defining in the cylinder a first chamber (2a) and a second chamber (2), the second chamber contain... | 06/26/2007 |
| 7221736 | Expansion device for fluid coolant/insulation in a x-ray apparatus In an expansion device for an x-ray apparatus, in particular with a rotary piston x-ray tube with a sealed coolant and/or insulation volume under a minimum pressure and pressing with this minimum pressure against an elastic pressure element, an elastic pressure elem... | 05/22/2007 |
| 7191877 | Fluid flow regulation of a vehicle shock absorber/damper Shock absorber components, such as a radial bypass damper, an anti-cavitation valve (ACV) and an incremental flow metering valve IFMV. The damper is of a continuous, unitary construction with a main hole and auxiliary holes interconnected by passageways. The ACV has... | 03/20/2007 |
| 7156214 | Vibration damper with amplitude-selective damping force Vibration damper includes a cylinder filled with a damping medium in which a piston rod with a piston is guided in an axially movable manner, wherein the piston divides the cylinder into a work space on the piston rod side and a work space remote of the piston rod. ... | 01/02/2007 |
| 7124865 | Pressure regulating dampers A damper includes housing bounding a chamber. A barrier is movably disposed within the chamber so as to divide at least a portion of the chamber into a pressure compartment and a control compartment each having a volume, the volume of the pressure compartment and th... | 10/24/2006 |
| 7114315 | Nonslip article for a stirrup A stirrup includes a footrest as well as a hanger for suspending the stirrup from a saddle. A shock absorber is provided for the footrest and has protrusions which impart a nonslip character to the shock absorber. The protrusions have respective ends which face away... | 10/03/2006 |
| 7073642 | Gas spring A gas spring comprises a cylindrical casing, in which a piston rod is guided for displacement concentric of a central longitudinal axis. A damping piston is mounted on the piston rod, dividing the interior of the casing into two sectional casing chambers. A filling ... | 07/11/2006 |
| 7070028 | Frequency dependent damper A gas shock absorber has a pressure tube which defines a working chamber. A piston divides the working chamber into an upper working chamber and a lower working chamber. A flow path extends through the piston to provide fluid communication between the upper and lowe... | 07/04/2006 |
| 7065943 | Stirrup with footrest having a gas filled shock absorber A stirrup includes an elongated footrest as well as a hanger for suspending the stirrup from a saddle. The footrest and the hanger can pivot relative to one another on an axis parallel to the longitudinal axis of the footrest. A shock absorber is provided for the fo... | 06/27/2006 |
| 7055319 | Piston and cylinder assembly with volume compensating system A piston and cylinder assembly having a cylinder with a piston and a connected piston rod. The piston defines opposed chambers wherein a compensating device is disposed in at least one of the chambers. The compensating device includes a capsule of an elastic materia... | 06/06/2006 |
| 7017719 | Vibration damper with adjustable damping force A piston is guided with freedom of axial movement in a damping medium-filled pressure tube, the piston dividing the pressure tube into a working space on the piston rod side of the piston and a working space on the side away from the piston rod. The medium can flow ... | 03/28/2006 |
| 6978872 | Hydraulic dampers with pressure regulated control valve A suspension damper includes a housing bounding a main chamber. A piston rod is slideably disposed within the main chamber of the housing. A main piston is mounted on the first end of the piston rod within the main chamber of the housing so as to slideably engage ag... | 12/27/2005 |
| 6953108 | Magnetorheological damper system A magnetorheological damper system comprising a reservoir in communication with a damper. The damper comprises a damper cylinder defining a damper chamber, wherein the damper chamber contains a magnetorheological fluid and a movable damper piston. The damper piston ... | 10/11/2005 |
| 6918472 | Arrangement for a piston and cylinder device The hydraulic cylinder or shock absorber arrangement has a cylinder unit limiting an inner space in which a medium in the form of a gas or a liquid is intended to be placed. A forwardly and backwardly movable piston unit is placed such that it can slide within the s... | 07/19/2005 |
| 6892865 | Monotube shock absorber remote reservoir fluid connection A damper assembly includes a reservoir chamber for supplying hydraulic fluid to a main damper chamber. The reservoir chamber is in fluid communication with damper chamber through an internal fluid passage formed by openings in the damper housing and the reservoir ho... | 05/17/2005 |
| 6880684 | Flow regulator for a gas shock absorber A flow regulator for a gas shock absorber is connected between the primary cylinder and the secondary cylinder. The flow regulator allows a user to adjust the rate of flow of fluid from the primary cylinder to the secondary cylinder thereby varying the damping prope... | 04/19/2005 |
| 6863163 | Self leveling vehicle suspension damper A suspension damper comprises a cylinder tube and a control partition. The cylinder tube is disposed within a reservoir tube to define a fluid reservoir, and has at least one first hole. The control partition is disposed in the fluid reservoir, and communicates with... | 03/08/2005 |
| 6837343 | Shock absorber A shock absorber comprises first and second axially aligned cylinders (11, 21) each having a liquid filled piston chamber (12, 22), an axially displaceable piston (13, 23) received in the piston chamber (12,22), and means (14, 24) ... | 01/04/2005 |
| 6814348 | Traction/compression buffer for coupling devices on rail and wheel-mounted vehicles A traction/compression buffer for coupling devices on rail and wheel-mounted vehicles comprises a housing (1) and a piston element (3), which projects out of said housing on one side and which can be moved out of a zero position in two directions again... | 11/09/2004 |
| 6793048 | Solenoid actuated continuously variable shock absorber A shock absorber includes a pressure tube with a piston slidably disposed therein. A separate valve includes a fluid circuit for fluid low in rebound and a fluid circuit for fluid flow in compression. Each fluid circuit includes a variable orifice which allows selec... | 09/21/2004 |
| 6749046 | Combined spring and shock absorber system including a hydraulic accumulator In a combined spring and shock absorber system for a wheel suspension of a vehicle comprising tubular rolling bellows arranged between a wheel-support structure and a vehicle body the bellows includes a space filled with a fluid in communication with a hydraulic acc... | 06/15/2004 |
| 6676076 | Two stage shock strut A shock strut for supporting and dampening a load with a two-phase dampening characteristic. The shock strut includes an inner cylinder slidably mounted within an outer cylinder, each of the cylinders having slidably mounted therein a piston. A first one ... | 01/13/2004 |
| 6669179 | Impact damper Impact damper as a connecting member between a bumper and a chassis of a motor vehicle for the purpose of damping the shock loading during a collision between this motor vehicle and an obstacle, predominantly through gas-spring forces and deformation work... | 12/30/2003 |