38 results about "Impact attenuator" patented technology

Provided is a swing speed analyzer for mounting on a swinging implement and comprising a first accelerometer, a processor and a shock attenuator. The processor uses an output from the first accelerometer to compute a swing speed of the swinging implement. The shock attenuator is comprised of a material that is sized and dimensioned to dampen an impact shock wave by more than 50% at 125 Hz. The material is preferably sized and dimensioned to dampen the impact shock wave from more than 1000 g to less than 500 g. Suitable attenuators can include viscoelastomeric materials such as foam. The swing speed analyzer can advantageously include any of a releasable attachment mechanism, a liquid crystal or other visual display, a second accelerometer, and a strain gauge. The analyzer can advantageously be attached to a golf club, a tennis racket, a baseball bat, or a hockey stick.

An optical deflector includes a mirror having a reflective plane; a torsion bar extending outwardly from a side of said mirror; a support surrounding said mirror; a piezoelectric cantilever including a supporting body and a piezoelectric body formed on the supporting body, one end of said piezoelectric cantilever being connected to said torsion bar, the other end of the piezoelectric cantilever being connected to said support, said piezoelectric cantilever, upon application of a driving voltage to the piezoelectric body, exhibiting a bending deformation due to piezoelectricity so as to rotate said torsion bar, thereby rotarily driving said mirror through said torsion bar; and an impact attenuator connected to said support, the impact attenuator being disposed in a gap between said mirror and said support.

A utility trailer provides a frame defining a forward open bottom work space, a medially rearward deck and a rearwardmost extendable impact attenuator. Hitch structure encloses the forward portion of the work space. The impact attenuator is deployable spacedly rearwardly of the utility trailer in work site mode and provides frictional, mechanical and inertial devices to attenuate a forwardly directed impact. Additional impact attenuators extend between the hitch structure and a vehicle in towing motion. Plural jacks provide work site leveling and positional stability. The utility trailer provides an arch supported hoist to service the workspace and carries signs to provide traffic information and direction.

An impact attenuator system including a hyperelastic member that comprises an energy absorbing material with a tan δ of not less than about 0.05 to assist rebound control.

A trailer-mounted crash impact attenuator is disclosed for attachment to a host vehicle, which comprises an anti-rotational attachment system having an internal support tube and a plurality of external support tubes. The internal support tube has a connector on a front end thereof for attachment to a suitable receptacle on the host vehicle, and the plurality of external support tubes each have an anti-rotation support pad on a front end thereof. At least one of the internal support tube and the plurality of external support tubes is comprised of a telescoping construction. A backup frame is disposed on a rear end of the attachment system, and a crash attenuator unit is disposed on an axle and pair of wheels for mobility. When the crash attenuator is impacted by an errant vehicle, the anti-rotational attachment system is actuated to prevent the trailer mounted crash impact attenuator from rotating relative to the host vehicle.

An impact attenuator system includes a hyperelastic member that comprises an energy absorbing material which behaves in a rate-independent hyperelastic manner so that its permanent set is minimized and the material can absorb tremendous amounts of impact energy while remaining fully recoverable.

A blast attenuator includes an enclosure defining a cavity; a core defining a plurality of interconnected pores, the core disposed in the cavity; and a shear thickening fluid disposed in the cavity, such that the shear thickening fills a portion of a pore volume of the core. A blast attenuation assembly includes a blast attenuator including a shear thickening fluid and a crushable element that omits a shear thickening fluid operably associated with the blast attenuator. A method includes the steps of providing a rigid core defining a plurality of interconnected pores and placing an enclosure about the core, the enclosure defining a filling port. The method further includes the steps of filling at least a portion of a pore volume of the core with a shear thickening fluid and closing the filling port to seal the enclosure and form a first blast attenuator.

The present invention relates primarily to highway safety devices, secondarily to on-board vehicle mounted safety devices and more particularly to enhancing the performance of such devices when occupants of vehicles are subjected to severe deceleration forces.

A Freeway Impact Attenuator is a traffic control or traffic accident impact absorbing device that will be deployed and replaced the conventional sand filled plastic buckets on the highway exits, junctions and temporary highway constructions. The rear support bracket for the temporary deployment to be replaced with concrete block to keep the unit from sliding.

The bumper and sliding tube move backwards and simultaneously the water in the cylinder get compressed while piston also moves backwards once impact force exerted to the bumper. The sliding tube and piston is interfaced through the clamp.

When the water pressure increases to the level that cylinder piston reaction force overcome the impact, sliding tube will stop prior to the end of cylinder full stroke.

Water level inside the tank will also increase and may over flow in some case is depending on the piston traveling in the cylinder.

An impact attenuator including an impact head, coupled to a first end of an energy absorption body, which energy absorption body is arranged for fixation to an external structure at a second end opposing the first end of the energy absorption body, configured to at least partly absorb or dissipate energy from a collision of an object with the impact head, and including a first part and a second part extending substantially lengthwise behind each other, wherein the first and second part are mutually moveable and including a first and a second cutting edge, wherein, the first cutting edge is arranged for splitting the first part of the energy absorption body upon impact of an object colliding with the impact head, and the second cutting edge is arranged for consecutively splitting the second part of the energy absorption body upon impact of an object colliding with the impact head.

An impact attenuator for vehicles, including an energy absorbing device for decelerating forces, including a housing, at least two pins arranged in the housing which are arranged in parallel to each other in the housing, as well as a metallic, elongated draw element, which can be positioned within the housing such that it extends between and in contact with the pins, wherein the pins and the draw element are positioned such that a change of direction appears on the draw element when passing by each pin such that at mutual moving of the draw element and the housing in relation to each other, the movement is decelerated due to deformation of the draw element at passage of each pin. The pins and the draw element are positioned such that the draw element obtains a change of direction of at least 90° when passing at least two of the pins.

A shock attenuator capable for use with a high pressure fluid line at pressures experienced by waterjet cutting systems comprises an attenuator body having an internal generally axially-extending bore extending between end regions, at least one of which is open-ended. An end plug within the open-ended region of the bore seals the bore and has a though hole for accommodating a fitting for connection to a high pressure fluid line. A closure assembly for retaining the end plug within the bore includes a first plurality of generally radially-extending tabs extending from the attenuator body and circumferentially disposed about said axis, with each of said tabs of the first plurality being separated from the next tab by a respective gap. A second plurality of generally radially-extending tabs is coupled to the end plug and circumferentially disposed about said axis, with each of said tabs also being separated from the next tab by a respective gap. The second plurality of tabs is positioned for retention by said first plurality of tabs in such a way that the end plug is retained in the bore when subjected to the high pressure from high pressure fluid within the bore.

In one embodiment, the first plurality of tabs extends outward from the body's exterior to engage the second plurality of tabs extending inwardly from an end cap.

In another embodiment, the first plurality of tabs extends inwardly from the bore's wall to engage a second plurality of tabs extending outwardly from the end plug.