Safe protection equipment for all vehicles will significantly reduce the collision force by spring or hydraulic cylinder that absorb the colliding force, when the vehicle bumps to obstacle or two vehicles collide with each other. The reduced colliding force will be transferred to the chassis or frame of the vehicle. This equipment can be used on both front and rear of the vehicle. Combination of springs or hydraulic cylinder with different elasticity can reduce the collision smoothly.

This equipment will protect both vehicles and drivers without changing the current air-bag protection system. It will significantly reduce the damage for serious collision accidents.

This equipment can be attached to the vehicle chassis with different ways based on the type of the vehicle. The chassis and the frame may need some enhancement.

A dampened electronic control for manual operation to control a machine includes a housing, a movable element pivotally supported in the housing upon a shaft with a rotation axis, and an electronic sensor configured to detect rotational movement of the shaft. A non-hydraulic damping mechanism is coupled to the moveable element, wherein the damping mechanism includes a piston disposed in a cylinder of the housing and configured to operate with air inside the cylinder as the working fluid and a spring to resiliently bias the piston towards the moveable element. Movement of the moveable element towards the piston causes the piston to compress the air inside the cylinder to thereby provide a resistance force against the moveable element to thereby dampen the movement of the moveable element.

Embodiments of three parameter isolators including rolling seal damper assemblies are provided. In one embodiment, the three parameter isolator includes first and second isolator end portions, which are opposed along a working axis. A main spring and a tuning spring are mechanically coupled in parallel between the first and second isolator end portions. A rolling seal damper assembly is further mechanically coupled between the first and second isolator end portions in parallel with the main spring and in series with the tuning spring. The rolling seal damper assembly includes a first hydraulic chamber, a second hydraulic chamber fluidly coupled to the first hydraulic chamber, and first and second rolling diaphragm seals partially bounding the first and second hydraulic chambers, respectively. In certain implementations, the rolling seal damper assembly also contains a thermal compensator piston to which the first rolling diaphragm seal is attached.

The present exemplary embodiments relate to a variable damping force shock absorber in which variable valves each capable of varying a damping force during compression and rebound strokes are installed inside a cylinder, and thus, a volume of an apparatus is reduced to easily secure an installation space and prevent interference with peripheral components.

A damper includes a housing with at least one axially offset longitudinally extending guide channel for receiving a plunger of a piston assembly. The plunger is axially offset from a control rod extending through the housing and the piston assembly. A coil spring surrounds the housing and extends between a hemispherical cap of the housing and the piston. The plunger includes a friction pad which engages the guide channel of the housing to provide frictional inter-engagement for the damper. In one embodiment, the housing includes a pair of axially offset guide channels and the piston assembly includes a pair of axially offset plungers which extend within a pair of guides of the housing. One of the plungers includes a linear sensor which provides signal information for use by a washer control circuit.

A damping device has a pin member inserted slidably in a cylindrical case member. The bottom of the case member has: a hole forming section in which an insertion hole is formed; and a slit for allowing the hole forming section to be expanded and deformed. The outer peripheral surface of the pin member and/or the inner peripheral surface of the hole forming section has a tapered section tilted relative to the axial direction. The movement of the pin member of being pressed into the insertion hole from the inside causes the outer peripheral surface of the pin member and the inner peripheral surface of the hole forming section to slide on each other along the tapered section, and as a result, the insertion hole is expanded.

A torque transfer mechanism includes an input member to receive from a propulsion source, an input torque about an axis of rotation and an output member coupled to the input member to transfer the input torque to a downstream driveline component. The torque transfer mechanism also includes at least one clockspring to restrict relative rotation between the input member and the output member. The torque transfer further includes a mass plate coupled to the output member and configured to rotate about the axis of rotation. The torque transfer mechanism further includes a plurality of pendulum masses movably coupled to the mass plate wherein the clockspring is arranged to attenuate a first range of input torque vibration and a the plurality of pendulum masses are arranged to attenuate a second range of input torque vibration.

The present invention is a novel passive adjustable gravity compensation apparatus which utilizes an internal-pressure-variable cylinder. With the coordination of cam, rod, or the combination of the fore mentioned, the internal-pressure-variable cylinder obtains the characteristics of a linear elastic device which has variable elastic coefficient. Through appropriately adjusting the internal pressure of the internal-pressure-variable cylinder, the cylinder would perform as a linear elastic device with proper elastic coefficient to fully or partially compensate the gravitational effect of the manipulator system and the load it holds. Thus, the proposed invention can fully or partially compensate the gravitational effect of the manipulator system at different loading conditions without changing its geometric configuration.

The present invention relates to a door stopper (10) comprising a dampening piston (30), a pin holder (40) provided at the piston end (32) of the piston shaft (31) of the dampening piston (30), and a spring (56) connected to the pin holder (40), in order to decelerate the sliding door during opening thereof in vehicles having sliding door and in order to reduce the hitting effect. As an improvement, the present invention is characterized by comprising a first roller (60) and a second roller (70) connected to each other so as to rotate together in a coaxial manner, and a first rope (61) connected to the pin holder (40) from one end and connected to the first roller (60) from the other end and a second rope (71) connected to the spring (56) from one end and connected to the second roller (70) from the other end, and further characterized in that the first roller (60) is greater than the second roller (70).

Embodiments of three parameter isolators including rolling seal damper assemblies are provided. In one embodiment, the three parameter isolator includes first and second isolator end portions, which are opposed along a working axis. A main spring and a tuning spring are mechanically coupled in parallel between the first and second isolator end portions. A rolling seal damper assembly is further mechanically coupled between the first and second isolator end portions in parallel with the main spring and in series with the tuning spring. The rolling seal damper assembly includes a first hydraulic chamber, a second hydraulic chamber fluidly coupled to the first hydraulic chamber, and first and second rolling diaphragm seals partially bounding the first and second hydraulic chambers, respectively. In certain implementations, the rolling seal damper assembly also contains a thermal compensator piston to which the first rolling diaphragm seal is attached.