Abstract: A method for mobilizing a hip joint capsule of a patient using a resilient bolster. In accordance with the method, the patient assumes a lateral position, with the hip capsule to be treated superior. The resilient bolster is placed between the patient's legs as proximal to the patient's crotch. A force is applied to patient's superior leg to move it downwardly from a resting position. During downward movement of the patient's superior leg, the bolster functions as a fulcrum and the patient's superior femur functions as a lever arm to create a first class lever that partially distracts the femoral head from the acetabulum. After application of the force, the resiliency of the bolster causes the patient's superior leg to return to the resting position. The movements may be repeated, and the degree of hip flexion and rotation may be varied to affect different regions of the hip capsule.
Abstract: The present invention relates to a vehicle impact sensor device adapted to detect an impact between a vehicle (1) and a person. The sensor device (6) comprises a tubular enclosure (7) which encloses a gas-filled space (8). The tubular enclosure (7) has a first end (7a) and a second end (7b) and is arranged to extend along a bumper cover (5), when mounted to a vehicle (1). The sensor device (6) further comprises a pressure sensor (9, 9?, 11, 11?) arranged to detect pressure characteristics in the the tubular enclosure (7). The sensor device (6) also comprises a gas pulse device (11, 11?) which is connected to the tubular enclosure (7), the gas pulse device (11, 11?) being arranged to insert gas into, or withdraw gas from, the tubular enclosure (7).
December 9, 2011
Date of Patent:
December 13, 2016
AUTOLIV DEVELOPMENT AB, BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT
Norbert Kollmer, Richard Baur, Herbert Hoefelsauer
Abstract: A marine node for recording seismic waves underwater. The node includes a main body having a torus shape; a central body provided inside a space defined by the main body and connected to the main body through at least a link; a first thruster provided in the main body and configured to propel the main body along a central axis (Z) of the main body; and a seismic sensor configured to record the seismic waves underwater.
Abstract: In a frontal vehicle collision, an orthogonal cross-section of a crash box, taken orthogonally to the vehicle front-rear direction, deforms into a hexagonal shape. Due to this deformation of the orthogonal cross-section, new ridge lines are formed at an upper face portion and a lower face portion, running from the vicinity of both end portions in a vehicle width direction of vehicle rear end portions to the vicinity of both end portions in the vehicle width direction of respective join portions S. The strength of the crash box in the vehicle front-rear direction increases due to the increased number of ridge lines in the vehicle front-rear direction (axial direction). Load generated during crushing of the crash box in the vehicle front-rear direction therefore increases, as a result of which the energy absorption amount of the crash box increases. Namely, the impact absorption performance of the crash box is improved.
Abstract: Custom fitting protective athletic equipment composed of larger compressive chambers to generally surround a body part as well a plurality of smaller compressive chambers, which can be shaped to absorb rotational impact forces, outside the larger compressive chambers. A hard or yielding shell positioned either outside the chambers or between them can provide additional impact dampening and protection. Both the larger and smaller compressible chambers preferably contain compressible fluid, such as air, another gas, gel or liquid. Valves are preferably provided in the chambers so that the fluid can be controlled when an impact is received. A method is also disclosed to use three-dimensional scanning techniques and three-dimensional 3D printer manufacturing techniques to produce the protective athletic equipment of the present invention.
Abstract: The invention is an energy absorbing system for safeguarding structures from disruptive forces, which may be implemented into structures or devices to provide protection from seismic motion, blasts or other disruptive forces, due to the system's displacement and damping characteristics. The system's performance can be better molded analytically to predict performance of the structure under earthquake and wind motions, for example. By utilizing cost effective materials and a simple design, the present invention provides a more efficient cost-effective system for absorbing unwanted energy, for example, a base isolation system.
Abstract: A wheel suspension system for a vehicle includes a mounting base and a striking base spaced from each other and moveable relative to each other along an arced line of motion. An insulator is coupled to and extends from the mounting base. The insulator is formed of an elastomeric material for compression between the mounting base and the striking base when the striking base contacts the insulator during movement of the mounting base and the striking base relative to each other. The insulator is compressed along the arced line of motion between the mounting base and the striking base. The insulator includes an impact portion extending at an acute angle relative to the base plane for distributing compressive forces within the insulator as the insulator is compressed along the arced line of motion. The distribution of the compressive forces within the insulator increases the durability and reliability of the insulator.
Abstract: This invention concerns a goal as used in installations intended for predetermined sports, such as soccer, seven-a-side football, five-a-side football, handball or other similar sports, wherein the goals are generally formed by two vertical side posts and upper horizontal crossbar; said goals have been designed in such a way as to safeguard the physical integrity and protection of sports persons from possible injuries, while at the same time ensuring generation of a standardized rebound. Both the side posts and the crossbar of the goal comprise a rigid core of metal, wood or similar, of variable configuration in transverse cross-section, surrounded by a spongy cellular covering based on epdm, and the latter covered in turn by an external layer of polyethylene coated with polyurethane paint.
June 9, 2008
Date of Patent:
September 4, 2012
Felipe Mora Vera, Jose Rafael Vizcaino Cambra
Abstract: An impact energy dissipation device for the prevention of high-speed vehicles and more specifically automotive vehicles, aircraft, helicopters, components and the like from receiving high-speed impact energy directly onto their structures in case of a collision. The device is to isolate high-speed impact energy from the crashworthy structures by breaking down the huge impact energy with many small manageable shear fragments. The device includes a slidable assembly with a series of resistive pins with predetermined shear strength, staggered in two tandem rows to shear in a controlled manner that only one pin is sheared at a time thereof bearing an approximate equivalent of one shear pin load transmission throughout a collision.
Abstract: The invention provides a telescopic member that includes a cylinder in which a rod carrying a piston is mounted to slide telescopically, the telescopic member including internal abutment mechanisms that are overridable over a predetermined force when the rod comes into abutment inside the cylinder in the shortening direction. The internal abutment mechanisms include an abutment piece extending in an open bore within the rod and projecting therefrom, the abutment piece being held to the rod via a pin.
Abstract: A limit stop with an elastomer resilient element, which is to be secured on a door or lid and/or on an opposing stationary vehicle section for damping forces generated when the door or lid strikes stationary chassis parts of a motor vehicle. The limit stop includes an additional damping section disposed adjacent to and cooperating with the elastic resilient element in a spring deflection direction of the resilient element. The damping section comprises at least two chambers filled with a fluid and a nozzle plate arranged between the chambers with at least one channel extending through the nozzle plate and connecting the chambers. The fluid is displaced from one of the chambers into the other chamber during a spring deflection of the elastomer resilient element, thereby producing a pressure force which is caused by the buildup in pressure when the volume of one of the chambers decreases and augments the return force of the resilient element.
Abstract: In a hydraulic shock absorber (1), a piston rod (5) protrudes from a cylinder (3) filled with hydraulic fluid. A rebound cushion (8) is fitted to an outer circumferential surface of the piston rod (5) in the cylinder (3). A stopper (6) fixed to the cylinder (3) contacts the rebound cushion (8) at an protrusion limiting position of the piston rod (5) to prevent further protrusion of the piston rod (5). An oil pool (8a, 9, 10, 15) formed in a sliding surface (8a, 14) of the rebound cushion (8) supplies oil to the sliding surface that slides on any of the inner circumferential surface of the cylinder (3) and the outer circumferential surface of the piston rod (5) to ensure smooth relative rotation of the piston rod (5) at the protrusion limiting position and the cylinder (3).
Abstract: A shock absorbing device for a vehicle, absorbing an axial compression load by means of plastic deformation in order to absorb an impact energy, is hollowed and has an octagonal cross section.
Abstract: A soccer goal pad comprises an integrally formed foam body for overlying the playing surface of a goal post. The pad is self retained on the post. The goal pad provides impact-cushioning along the playing surface so as to reduce the risk of injury, while minimizing its affect on the trajectory and speed of a soccer goal bouncing off of the padded post. A method of making the goal pad is disclosed.
Abstract: In a pneumatic vibration isolator that includes a housing, an upper part with a first cylindrical side wall and a lower part with a second cylindrical side wall, a pneumatic spring is disposed in an annular gap between the first and the second cylindrical side wall and which opposes radially directed relative movements between the upper part and the lower part and a bearing in axial direction between the upper part and the lower part which permits relative movements of the upper part and the lower part in radial direction such that the stiffness and or the damping of the pneumatic spring are controlled or changed from the outside by means of a pressure control or respectively an adjustable throttle that are part of a pneumatic line system connected to the pneumatic spring.
Abstract: A vibration isolation assembly comprises a base, a plunger and an annulus of resilient material between the base and plunger. The base has a pair of oppositely inclined, internal, tapered surfaces connected to each other which define an opening though the base. The tapered surfaces of the base contact corresponding external surfaces of the annulus. The plunger has an inclined surface substantially parallel to one of the internal surfaces and a second surface within the opening and facing the pair of tapered surfaces. The inclined surface and the second surface of the plunger engage corresponding internal surfaces of the annulus. In this device vibration creates a load on the annulus which is entirely compressive, or nearly so.
Abstract: 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 against the resistance of a spring device and a damping device. A hydraulic damping device is provided for damping the return movement of the piston element (3) out of the position in which it is drawn out of the housing (1) in the direction of the zero position. Said hydraulic damping device comprises a ring-shaped hydraulic working chamber (32) that surrounds the piston element (3) and that is connected to an overflow chamber (29) by at least one overflow channel (31).
Abstract: A vibration isolation device is disclosed. More specifically the vibration isolation device of the present invention comprises a fuse for decreasing the mount stiffness when loads above a threshold load value are applied to the device. The fuse for decreasing the mount stiffness comprises a shear pin with shear locations that comprise annular grooves with semielliptical cross sections.
July 20, 2001
Date of Patent:
April 6, 2004
Paul J. Bachmeyer, Michael R. Blewett, Marvin D. Ohme
Abstract: 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. This impact damper includes an inner tube and an outer tube, which can be displaced telescopically one inside the other, thereby changing the volume of pressurized first and second gas spaces, at least one of the gas spaces being connected to an accumulator by a pneumatic feed line. An electrically controllable control valve, by means of which the air pressure in the gas spaces can be changed, can be arranged in the pneumatic feed line. The pressure in the gas spaces can be varied by a detection sensor system in the motor vehicle, which controls a control valve and adapts the pressure to the expected momentum of the collision. It is possible for a deformation element to be displaced as well to absorb a high impact energy by deformation work.
Abstract: The gas-hydraulic shock absorber assembly comprises a sleeve member and a ram member movable relative to the sleeve member. In the interior of the ram member, a gas chamber is provided that is pressurized by means of a gas. In the interior of the sleeve member, an oil chamber is provided that is filled with a hydraulic medium and which decreases in volume the more the ram member is moved relative to the sleeve member. Between the two chambers, a gas-hydraulic control assembly is provided. Upstream of the control assembly, there is a bleeding assembly, comprising a transfer channel opening into a portion of the oil chamber remote from the control assembly. Further provided is a bleeding channel, opening into an upper portion of the oil chamber and connecting the transfer channel to the control assembly when the shock absorber assembly is at rest. The bleeding assembly comprises several channels connecting the oil chamber to the control assembly and comprising each a V-shaped valve flap to close the channels.
Abstract: An 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 through hydraulic damping forces and gas-spring forces. This impact damper includes an inner tube which can be displaced telescopically inside an outer tube, thereby changing the volume of a pressurized gas space, which interact by means of a separating piston with a first liquid space, which communicates hydraulically via a restriction orifice with a second liquid space, which is bounded by a deformation element. The separating piston is arranged in a floating manner in the inner tube and thereby brings about a static equilibrium by pressure compensation in the liquid spaces and in the gas space.
Abstract: An energy absorbing element, that may be used with, for example, vehicles such as automobiles and trucks, is described. The energy absorbing element (2, 2′) comprises, (a) at least two oppositely arranged metal sheets (7, 8) having a multiplicity of predetermined buckling points (11, 12 and 13) which enable each sheet (7, 8) to fold up along its longitudinal direction (x-direction); and (b) a plurality of connecting ribs (9) which interconnect the oppositely arranged metal sheets (7, 8), the connecting ribs (9) being fabricated from a plastic material selected from thermoplastic materials and/or thermosetting plastic materials. Also described is a bumper system which comprises a transverse beam and at least one of the energy absorbing elements of the present invention.
Abstract: An apparatus for attenuating shock loads includes a flexible, non-rigid outer impervious envelope. The envelope is formed from a high strain resistance material. An inner, pervious baffle extends across the envelope between the first and second sides. The inner baffle is also a flexible, non-rigid material of high strain resistance. The envelope is inflated with gas at a superatmospheric pressure. An impact on one side of the structure will compress that side, increasing the pressure of the gas between that side and the baffle. The gas will then flow through the pervious baffle to the other side, dissipating energy, spreading the load over the second side of the envelope and causing a time delay in the build-up of pressure on the second side. In preferred embodiments of the invention, there are plural, parallel baffles in the envelope to provide a multi-stage energy dissipation.
Abstract: An apparatus for protecting a structural column from an impact includes a flexible pad configured to have an installed position wrapped about the column. The original width of the pad is defined by and between opposite side edges. The height of the pad is defined by and between upper and lower end edges that extend horizontally about the column when the pad is in the installed position. An outer side surface of the pad is non-corrugated, and in innerside surface is corrugated. The corrugated inner side surface has ribs that are configured to extend vertically in contact with the column when the pad is in the installed position. Grooves that separate the ribs are configured as cutting guides along which the pad can be severed to adopt a reduced width corresponding to particular column.
Abstract: An apparatus for protecting structural supports from damage when impacted by an object such as a moving vehicle is provided. The apparatus has a shaped component which in the preferred embodiment is a semi-cylindrical component having a body defined by a wall, a top, and a base. The wall has at least one flat wall face and surrounds a hollow interior. An indentation for receiving a structural support is present in at least one flat wall face. A means for securing the shaped component to the structural support and for firmly seating one component at its flat wall face against the second component at its flat wall face when two components are present. Preferably, each component has a plurality of impact absorbing indentations, each having an aperture, a base and a wall extending from the base to an aperture mouth. These indentations function to re-distribute the energy of impact when a collusion occurs between the apparatus and a moving object.
Abstract: An apparatus for protecting structural supports from damage when impacted by an object such as a moving vehicle is provided. The apparatus has a shaped component which in the preferred embodiment is a semi-cylindrical component having a body defined by a wall, a top, and a base. The wall has at least one flat wall face and surrounds a hollow interior. An indentation for receiving a structural support is present in at least one flat wall face. A device for securing the shaped component to the structural support and for firmly seating one component at its flat wall face against the second component at its flat wall face when two components are present. Preferably, each component has a plurality of impact absorbing indentations, each having an aperture, a base and a wall extending from the base to an aperture mouth. These indentations function to re-distribute the energy of impact when a collusion occurs between the apparatus and a moving object.
Abstract: An apparatus for protecting structural supports from damage when impacted by an object such as a moving vehicle is provided. The apparatus has a shaped component which in the preferred embodiment is a semi-cylindrical component having a body defined by a wall, a top, and a base. The wall has at least one flat wall face and surrounds a hollow interior. An indentation for receiving a structural support is present in at least one flat wall face. A means for securing the shaped component to the structural suppport and for firmly seating one component at its flat wall face against the second component at its flat wall face when two components are present. Preferably, each component has a plurality of impact absorbing indentations, each having an aperture, a base and a wall extending from the base to an aperture mouth. These indentations function to re-distribute the energy of impact when a collusion occurs between the apparatus and a moving object.
Abstract: An impact damper includes two tubes which are slidable one in the other for braking a vehicle impact against an obstacle by hydraulic damping forces and pneumatic spring forces. The inner tube is closed off by a bottom. A gas chamber containing a high pressure gas cushion is arranged adjacent to the bottom and bounded by a separating piston that is guided sealingly and displaceably in the inner tube. A first fluid chamber is arranged between the separating piston and a partition fixed in the inner tube and provided with choke openings. A second fluid chamber is formed by the outer tube and connected to the first fluid chamber via the partition. The outer tube has a tapering region directed away from the partition, and a deformation element dividing the second fluid chamber into two part chambers.
Abstract: An impact absorber for decelerating a vehicle impacting on an obstacle, which impact absorber includes two tubes which can be displaced one inside the other in the manner of a telescope. The inner tube is closed off from the outside by a base and has a highly pressurized gas space and a first fluid space. A second fluid space is arranged in the outer tube and is hydraulically connected to the first fluid space via a restriction formed by a restricting aperture in an intermediate wall fixed in the inner tube. The outer tube has, in the end region, a plastic disk which melts at a predetermined temperature and as a result counteracts an explosion of the impact absorber in the event of a fire by reducing the pressure.
Abstract: A shock absorber for side sills of a chassis is disclosed. The shock absorber is installed in each side sill of a chassis and effectively absorbs a side impact at the side sill in the event of a side collision of a car, thus effectively reducing impact transmission velocity and preventing the side sill from being badly thrust into the passenger compartment in such a collision. In the shock absorber, a fixed guide pipe penetrates the center of a reinforcing member of a side sill box with both ends of the pipe being projected into inner and outer panels of the side sill box. A retractable damper is movably inserted into the guide pipe at a position inside the outer panel, thus primarily absorbing the side impact. A support member is elastically and movably inserted into the guide pipe at a position inside the inner panel, thus finally absorbing the impact.
Abstract: Impact-absorbing damping device which has at least two telescoping tubes, in particular for motor vehicles, to decelerate a vehicle when it collides with an obstacle by damping and/or spring forces, whereby the cavity of at least one tube is provided with an elastomer body.
Abstract: A grating system (1) with parallel lengths (5) of structural section is accommodated in a frame. It is intended for armored special-enough vehicles and or stationary units. The object is to optimize protection against a strike or impact. Energy absorbers are interposed between the system and the vehicle or unit that accommodates it.
Abstract: Snubbers are useful in dampening inertia loads at the end of stroke movement of hydraulic cylinders. The known snubbers have one part attached to a piston rod assembly and another part on the cylinder assembly thereby any misalignment between the piston rod and cylinder assembly will produce inconsistent snubbing action. The subject snubber mechanism of the invention is attached to the cylinder assembly and includes a sleeve position around a stem, the sleeve is moved from a first position to a second operative position by contact with the piston rod assembly. The stem defines a variable rate flow path continuously communicating an actuating chamber with a pressure source as controlled by movement of the sleeve relative to the stem.
Abstract: A traverse apparatus for a yarn winding machine which non-linearly buffers the impact between the cam drum (4) and cam roller (13) due to the emission resistance and shear resistance of the viscous fluid (b) intervening between shock absorbers (10a,10b,10a',10b') arranged at the return point and reciprocally moving slide members (9,9') connected to a traverse rod (14). As the impact between the cam drum (4) and cam roller (13) is sharply non-linearly buffered due to the to the emission resistance and shear resistance of the oil, noise generated when the cam roller returns can be reduced and the decrease in durability of the traverse device caused by the aforementioned impact can be prevented.
Abstract: A railway buffer capsule comprising a hollow cylindrical plunger slidably mounted in a cylinder. The cylinder is closed at one end. The plunger is closed at its outer end, and in its inner end is formed a fixed area orifice of flow restricting dimensions. A floating piston slides in the bore of the plunger and separates a liquid reservoir from the remainder of the interior of the plunger which comprises a gas containing space. A stepped piston has its larger diameter exposed to pressure in the reservoir and its smaller diameter end adapted to seat and close the orifice and be exposed to compression chamber pressure. The combination of the stepped piston and the orifice is a multiplier valve which multiplies the resistance of the compressed gas to lengthwise compression of the buffer.
December 21, 1995
Date of Patent:
August 5, 1997
Oleo International Limited
Ronald C. Page, John J. Bushnell, Carl F. Watts
Abstract: Impact-absorbing bumper mount with two telescoping tubes, in particular for motor vehicles, to decelerate a vehicle via damping forces when the vehicle strikes an obstacle, whereby a work piston is guided in a sealed manner in one of the tubes, and with which, in addition to a weight reduction, it is also possible to simplify the fabrication process, reduce costs and achieve sufficient corrosion protection. The invention teaches that this problem can be solved by tubes which have recesses on their inside and outside, and which are coated with a polymeric material.
Abstract: Impact damper for motor vehicles, the impact damper having two tubes which can be pushed one inside the other, the inner tube having a first and second fluid chamber and a gas chamber separated from the fluid chamber by a separating piston. A third fluid chamber is located behind a work piston and the tubes can be retracted or extended by changing the pressure within the fluid chambers of the impact damper.
September 23, 1991
Date of Patent:
September 7, 1993
Hartmut Bonenberger, Holger Kirchner, Kurt Wagner
Abstract: An impact or recoil member possessing a plurality of gas cushions which are arranged within each other, and which are activatable in sequence in response to a triggering sensor. A comparatively hard assumption of a load by the outer gas cushion is permitted up to a pressure rise beyond its bursting limit; with at least one inner gas cushion which is designed for the assumption of the residual energy of the mass which is to be caught under a hard or stiff spring characteristic. The individual gas cushions are activated staggered in time from the outside towards the inside over a period of time from a triggering apparatus which is centrally provided for all gas cushions either in or behind the mounting support for the inflation of the still folded-in cushion casings in a specified time sequence, whereby the actuation of the triggering apparatus is implemented through the triggering or tripping sensor which is correlated with the loading scenario.
Abstract: The present invention relates to a vehicle bumper which performs an effective function of reducing any impact forces acting on the vehicle and thus protects the safety of the passengers and the vehicle. The bumper according to the present invention comprises a base and a pneumatic cushion connected with the base and filled with gas.
Abstract: An impact damper or an energy absorbing device having at least two tubes which telescope one into the other and are configured especially for motor vehicles for the dampening of forces on a vehicle which crashes into an obstacle. In the inner space or interior of the impact damper, there may be included at least one dampening fluid which is filled through a filling device; a throttling point; and at least one component which confines the at least one dampening fluid in the inner space.
Abstract: An impact absorber is disclosed herein having a single or a pair of box-beam inflatable members arranged in guided sliding relationship. Elongated slots and shear bolts cooperate to releasably couple the inflatable members together so as to absorb shock prior to shearing. A resilient inflatable block is carried on the forward terminating end of one beam member while a resilient pad is carried on the terminating end of the other beam member in alignment to interfere with the sliding movement of the first member. The various impact-absorbing elements are arranged in a series for sequential actuation upon application of an impact. The inflatable block absorbs shock first, followed by the shear bolts and finally the resilient pad.
Abstract: An impact damper for a motor vehicle comprises two fluid chambers. These fluid chambers are interconnected by a fluid passage. In case of an impact of the motor vehicle against an obstacle, the fluid flows from one fluid chamber to the other fluid chamber through the throttled passage. If the impact occurs with a high velocity beyond a predetermined velocity, the impact damper behaves like a rigid body. It may therefore occur that the vehicle is damaged to a higher degree than it would in case of lack of the impact damper. For preventing such situation, the passage is provided by perforated and sandwiched discs. One disc acts as a support disc, one other disc acts as a throttling disc. The throttling disc is provided with a weakening line and is broken at a predetermined pressure different between the two fluid chambers. After rupture has occurred, the flow resistance through the passage is reduced and therefore the rigid behavior of the impact damper is eliminated.
Abstract: An impact absorbing construction for a motor vehicle comprises an impact damping cylinder. One end of said impact damping cylinder is adapted for being fastened to a vehicle structure. The other end of the impact damping cylinder is connectable with a bumper. The bumper is adjustable with respect to the impact damping cylinder. In order to allow both a horizontal and a vertical adjustment, a sleeve is provided having a sleeve axis which is perpendicular to the cylinder axis. A core is received by the sleeve. The core is adjustable along the sleeve axis by screwing. The bumper is fixable to the core. A sleeve support is fastened to the sleeve. The sleeve support is connectable with the other end of the damping cylinder and is adjustable with respect to the damping cylinder along the cylinder axis.
Abstract: A pier cushioning system is disclosed having a contact surface, sliding elements and hydraulic cylinders and apparatus to determine the mass and velocity of a docking vessel and to respond with the necessary counterforce to assist in the docking of the vessel. The mass and velocity determining capabilities utilize a flow and pressure transducer in combination with either a microprocessor or analog electronic circuit to perform the necessary calculations and thus adjust the flow of hydraulic fluid within the hydraulic cylinder in accordance with the force exerted by the docking vessel.
Abstract: An energy absorbing bumper unit attaching a bumper to a vehicle which incorporates a threaded jack screw that varies the distance between the screw and the side rail to accordingly tilt the energy absorber unit and the bumper assembly for effecting a mating of adjacent surfaces of the bumper and the bodywork of the vehicle to obtain a predetermined match line with reduced gap between the bumper and the body work.
August 6, 1987
Date of Patent:
May 16, 1989
General Motors Corporation
Joseph A. Bates, James M. Koontz, Jr., John D. Garner
Abstract: Energy absorbing unit for vehicle bumper support having inner and outer telescoping cylinders with a radially fixed flow control orifice in the piston cap for recessing a cooperating metering pin concentric with the orifice for controlling the flow of fluid between a pair of contractible and expansible fluid chambers to dissipate impact energy in a first stage operation. The radially fixed flow control orifice is designed to break away from the piston cap in response to predetermined high pressure buildup in one of the chambers to increase the opening between the chambers in a second stage operation to thereby reduce pressure and absorb the energy of increased impact load. A gas spring in the unit moves the two cylinders to their extended position on removal of bumper impact load.
Abstract: An anti-impact safety apparatus for a robot includes a buffer mechanism disposed between a swivel arm and a working arm of the robot. The buffer mechanism incorporates a converting mechanism which converts an electrical signal into a gas or liquid pressure. When an impact load, such as an axial load, eccentric load, or moment load, is applied to the working arm while in operation, the impact load is absorbed by the buffer mechanism and is also detected by a sensor switch, and the operation of the robot is instantaneously stopped. Thus, it is possible to protect the working arm and a function unit incorporated in the robot main body from the impact load. In addition, it is possible for the working arm to be readily restored to its normal position when the eccentricity thereof produced as a result of the impact is corrected.
Abstract: A reusable energy absorbing apparatus comprising a plurality of air chambers and valve members. The air chambers and valves are constructed so that the valve members close upon the application of an axial force, thereby sealing air within the air chambers. After the energy absorbing apparatus has reached the end of its compressive stroke, the valve members release sequentially, thereby venting the pressurized air in the air chambers to minimize rebound.