| Patents for F16F 9 - Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium (26,706) |
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| 10/10/1991 | DE4036522C1 Hydraulic car shock absorber - has flow coupling with control discs, forming with support spring traction stop |
| 10/09/1991 | EP0408631B1 Twin-pipe shock absorber |
| 10/08/1991 | US5054809 Variable damping characteristics shock absorber |
| 10/08/1991 | CA1290357C Rapidly opening peak-clipping valve for a hydropneumatic suspension for a heavy vehicle |
| 10/03/1991 | WO1991014589A1 Ultrasonic doppler velocity sensing within a hydraulic actuator |
| 10/02/1991 | EP0448845A1 Measure while drilling system |
| 10/02/1991 | EP0448833A1 Rolling-lobe airspring with a reinforced rolling lobe |
| 10/01/1991 | US5052982 Motion attenuated hydraulic autotensioner |
| 10/01/1991 | US5052712 Torque beam, equalized pneumatic and hydraulic axle suspension |
| 10/01/1991 | US5052665 Bumper rubber |
| 10/01/1991 | US5052528 Steering knuckle damper |
| 09/29/1991 | CA2013419A1 Stretcher suspension apparatus |
| 09/26/1991 | DE4109180A1 Shock-absorber with variable damping for motor vehicle - employs voltage-dependent deformation of piezoelectric discs coupled by variable-ratio lever to fluid channel |
| 09/26/1991 | DE4008863A1 Nitrogen filled tool spring - has integrated lubricating chamber, with plunger and screw lid |
| 09/26/1991 | DE4008831A1 Hydropneumatic spring system esp. for motor vehicle |
| 09/25/1991 | EP0448088A1 A cylinder piston device |
| 09/25/1991 | EP0447675A1 Gas spring of adjustable length |
| 09/25/1991 | EP0447674A1 Length adjustable gasspring |
| 09/25/1991 | EP0447517A1 Self-blocking gas spring with temperature-responsive bypass valve. |
| 09/25/1991 | EP0447400A1 Gas-spring device for regulating the hood on a sunbed in optional positions |
| 09/24/1991 | US5050712 Shock absorber |
| 09/24/1991 | CA1289578C Air spring having internal sealing band and method of installing same |
| 09/19/1991 | WO1991013777A1 Shock absorber with doppler fluid velocity sensor |
| 09/19/1991 | WO1991013776A1 Spring arrangement in a vehicle |
| 09/19/1991 | WO1991013775A1 Internal damping force sensor |
| 09/19/1991 | DE4008656A1 Shock absorber with tubular housing - has cylindrical body with cavity in between of changeable volume, and piston and throttle |
| 09/19/1991 | DE4008187A1 Support for pneumatic spring |
| 09/18/1991 | EP0447307A1 Hydraulic damper and elastohydraulic return device composed of such a damper |
| 09/18/1991 | EP0446773A1 A construction assembly comprising a gas spring |
| 09/18/1991 | EP0446637A2 Apparatus for controlling damping force of shock absorber |
| 09/18/1991 | EP0446476A1 Piston for unrolling the rolling lobe of a rolling-lobe airspring |
| 09/18/1991 | EP0446427A1 Wheel suspension |
| 09/18/1991 | EP0446338A1 Vehicle wheel suspension method. |
| 09/17/1991 | US5048861 Active suspension system and pressure control valve therefor |
| 09/17/1991 | US5048647 Container piston rod unit |
| 09/12/1991 | DE4007261A1 Controlled damper for vehicle suspension - has separate solenoid control valves for compression and decompression |
| 09/12/1991 | DE4007180A1 Hydraulic damper with regulated action - has by=pass valve clamped onto holes in outer shell of damper |
| 09/11/1991 | EP0446091A1 Rotary shock absorber with viscous fluid |
| 09/11/1991 | EP0401239A4 Vibration-isolating machine mount |
| 09/10/1991 | US5046755 Hydropneumatic suspension system |
| 09/05/1991 | DE4103948A1 Control mechanism for gas-spring actuator - has needle valve inside piston and piston rod controlling fluid by=pass |
| 09/04/1991 | EP0444321A1 Rolling-lobe airspring with a tubular rolling lobe made of an elastomer |
| 09/04/1991 | CN2084128U Long service controllable gas spring |
| 09/03/1991 | US5044701 Elastic body apparatus especially intended for an anti-lock brake system |
| 09/03/1991 | US5044648 Bicycle suspension system |
| 09/03/1991 | US5044474 Electrically adjustable shock absorber |
| 09/03/1991 | US5044351 Shock absorber for sporting and hunting bows |
| 08/29/1991 | DE4102108A1 Hydraulically damped door-closing unit - has straight cylindrical base contained entirely inside cylinder and accommodating pivot pin |
| 08/29/1991 | DE4029953C1 Adjustable pressure gas spring with gas filled cylinder - has arrester distributed over protective tube periphery, covered by protective ring |
| 08/29/1991 | DE4020045C1 Hydraulic shock absorber for vehicle - has coil compression springs mounted between core housing and armature |
| 08/27/1991 | US5042782 Fluid spring |
| 08/27/1991 | US5042781 Cylinder assembly |
| 08/27/1991 | US5042625 Damping unit |
| 08/27/1991 | US5042624 Hydraulic shock absorber with pre-loaded valve for linear variation characteristics of damping force |
| 08/27/1991 | US5042176 Load carrying cushioning device with improved barrier material for control of diffusion pumping |
| 08/22/1991 | DE4005386A1 Hydraulically damped door closer - has cylinder bore enlarged in end region to eliminate damping |
| 08/21/1991 | EP0442530A2 Shock absorber control system |
| 08/21/1991 | EP0442093A1 Fixing of an elastomeric hose to a fitting |
| 08/21/1991 | CN1013612B Damped reaction base for vibration testing |
| 08/20/1991 | US5041715 Gas spring, a method of filling a gas spring with pressurized gas and an installation for performing the method |
| 08/20/1991 | US5040823 Vehicle with front and rear wheels |
| 08/20/1991 | US5040645 Cylinder piston device |
| 08/14/1991 | EP0440943A1 Damping system with a shock absorber |
| 08/14/1991 | DE4004204A1 Hydropneumatic suspension system for vehicle - incorporates two piston-cylinder units connected to reservoir |
| 08/14/1991 | DE4003959A1 Oscillation damping system e.g. for vehicle suspension - has throttle point controlled by temp. to vary damping characteristics of shock absorber |
| 08/13/1991 | US5039072 Means for securing a rolling diaphragm on an air adjustable shock absorber |
| 08/13/1991 | US5038897 Piston and piston rod subassembly for a hydraulic damper |
| 08/13/1991 | CA1287649C Plastic bead reinforcement ring for fluid pressure devices |
| 08/13/1991 | CA1287648C Airspring with internal restraint |
| 08/09/1991 | WO1991012452A1 Proportional pressure control valve |
| 08/09/1991 | CA2074367A1 Proportional pressure control valve |
| 08/08/1991 | DE4102742A1 Steering wheel suspension |
| 08/08/1991 | DE4003200A1 Hydro-pneumatic spring - has two hydraulic circuits each having two separate cylinder chambers and two separate pressure chambers |
| 08/08/1991 | DE4002883A1 By=pass valve for vehicle hydraulic damper - has two stable positions with solenoid switching action |
| 08/06/1991 | US5037058 Damper unit for automotive power unit or the like |
| 08/06/1991 | US5036942 Rotatable operator control unlocking mechanism |
| 08/06/1991 | US5036750 Pilot-operated dual check valve assembly with cross-line flow valving pilot pistons |
| 08/03/1991 | WO1991011339A2 Digital suspension system |
| 08/03/1991 | CA2074514A1 Digital suspension system |
| 07/30/1991 | US5035407 Fluid-filled power unit mount |
| 07/30/1991 | US5035306 Adjustable damping force hydraulic shock absorber |
| 07/30/1991 | CA1287069C Side load compensating air suspension |
| 07/25/1991 | DE4022098C1 Motor vehicle vibration damper - has valve discs to control flow with seats on inner and outer edges |
| 07/23/1991 | US5034890 Automotive suspension control system with road-condition-dependent damping characteristics |
| 07/23/1991 | US5033340 Apparatus and method for tool vibration damping |
| 07/23/1991 | CA1286829C Plain bearing |
| 07/23/1991 | CA1286698C Die spring construction |
| 07/23/1991 | CA1286697C Automotive shock absorber with unitary striker plate and closure cap |
| 07/18/1991 | DE4011921C1 Hydropneumatic, vibration damping spring - has valve combination of several, parallel non-return valves with opposite action in each closure body |
| 07/18/1991 | DE4008326C1 Variable hydraulic vibration damper for vehicle suspension - has spring-supported plunger settable in at least two positions and switching in corresp. by=pass |
| 07/18/1991 | DE4000865A1 Gas spring for vehicle hatch - has cylinder, piston rod, piston, with spring loaded thrust piece piston, and plate cam covering hole |
| 07/18/1991 | DE4000862A1 Rear door for hatch-back car - has additional link to attach it to gas spring to hold it in either of two open positions |
| 07/18/1991 | DE3943520A1 Device for changing timed flow in torsion vibration dampers |
| 07/17/1991 | EP0437045A2 Internally damped thin-walled, composite longitudinal member having dedicated internal constraining layers |
| 07/16/1991 | US5031872 Microphone noise frequency and vibration absorbing mount |
| 07/16/1991 | US5031732 Shock absorber for a vehicle |
| 07/11/1991 | WO1991010077A1 Adaptive shock absorbers and damping valves therefor |
| 07/11/1991 | DE3940290C1 By=pass valve drive for hydraulic vibration damper - has electro-rotor fixed to control disc via toothed rod |
| 07/10/1991 | EP0436461A2 Hydraulic chock absorber for the industry |
| 07/09/1991 | US5030501 Cushioning structure |