Patent
Shock absorbing bumper
TLDR
In this paper, a shock absorbing bumper consisting of an impact distribution plate, a core of shock absorbing material, and a backing plate is presented, which is mounted with shock absorbing springs which deflect upon impact.Abstract:
A shock absorbing bumper comprising an impact distribution plate, a core of shock absorbing material, and a backing plate. The impact distribution plate may be made of steel or a rigid plastic and may be on the outer surface of the shock absorbing material or imbedded therein. The shock absorbing core consists of a foamed plastic material such as a polyurethane cellular foam and preferably consists of a high density, tight cell polyurethane foam. Connector pins attach the impact distribution plate slidably into the backing plate so that the impact plate is supported by the backing plate against forces applied substantially parallel to the impact plate but will not directly transmit to the backing plate impact forces applied substantially perpendicularly to the impact plate. The bumper may be mounted with shock absorbing springs which deflect upon impact. The bumper may be formed with a projecting leading edge. Apertures may be provided in the backing plate to permit the escape of compressed gas from the foam.read more
Citations
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Patent
Bumper for motor vehicles
Guntram Dipl Ing Huber,Wolfgang Fischer,Fritz Haeberle,Horst Kleiner,Daniel Riechers,Wolfgang Dipl Ing Klie,Johann Tomforde +6 more
TL;DR: In this paper, an extruded basic element having a shaped retaining rail adapted to accept an impact plate of a shock absorber is mounted in an elastomeric element, which is pushed into the retaining rail.
Patent
Shear action and compression energy absorber
David C Gertz,Denman Owen S +1 more
TL;DR: In this paper, an energy absorbing apparatus is provided to dissipate the energy of the impact force of a vehicle and a plurality of energy absorbing sheets are arranged in a stacked relation to resist the impact forces.
Patent
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Air venting, impact-absorbing compressible members
TL;DR: An impact-absorbing compressible member includes a thin-walled enclosure defining an inner chamber containing a volume of fluid such as air as discussed by the authors, which is formed of a blow-molded thermoplastic elastomer (TPE) material which is economical to make and durable in use.
Patent
Impact absorber for vehicles
TL;DR: In this paper, an impact absorber is described having a single or a pair of box-beam inflatable members arranged in a guided sliding relationship, where a resilient inflatable block is carried on the forward terminating end of one beam member while a resilient pad is carried in alignment to interfere with the sliding movement of the first member.
References
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Patent
Dampers and damped springs
TL;DR: In this paper, the authors describe a damper or damped spring, which consists of a piston-rod 15 which has a piston head 16 and is enclosed within a rigid chamber 14 filled with a compressible solid 17a, e.g. silicone rubber, for producing a damping force on the rod 15 and piston 16 as the rod moves into the cylinder.