Reversible energy absorbing bumper system
阅读：733发布：2023-09-24
专利汇可以提供Reversible energy absorbing bumper system专利检索，专利查询，专利分析的服务。并且An energy absorbing, reusable and reversible system for absorbing substantially longitudinal impact forces and dissipating the impact energy therefrom. The bumper system includes an impact frame having pre-contoured rib members which are distended in a radial direction when the impact forces are applied to the system. A resilient sleeve surrounds the impact frame to absorb energy and force the rib members to their initial unloaded contour. Energy absorption is accomplished through a combination of loading the rib members into or near the plastic stress region and the resiliency of the surrounding sleeve.，下面是Reversible energy absorbing bumper system专利的具体信息内容。
1. A reversible energy absorbing bumper system, comprising: a. an impact frame including at least one substantially longitudinally directed arm having an unloaded elongated extension, said extension being adapted to extend outwardly from a longitudinal axis of said frame when a force having a longitudinal component is applied to said bumper system; and, b. shroud means of an elastomeric material for receiving said impact frame, said shroud means being the primary restoring means for restoring said frame to said unloaded extension after said impact frame is extended outwardly.
2. The bumper system as recited in claim 1 wherein said impact frame comprises: a first and second impact member being longitudinally displaced from each other, said arm defining an extension means being rigidly secured to said first and second impact members on opposing ends of said extension means.
3. The bumper system as recited in claim 2 wherein said impact frame includes a pair of ring elements having through openings, said first and second impact members insertable within said through openings and rigidly secured thereto.
4. The bumper system as recited in claim 2 wherein said first and second impact members include cylindrical disk elements, said impact members being axially aligned with respect to said longitudinal axis.
5. The bumper system as recited in claim 2 wherein said first and second impact members define a pair of disc members having a predetermined diameter and longitudinally directed thickness.
6. The bumper system as recited in claim 2 wherein said arm comprises an expandable element which extends substantially longitudinal between and rigidly secured to said first and second impact members, said expandable element having an outwardly directed apex with respect to said longitudinal axis at a predetermined location substantially midpoint between said first and second impact members.
7. The bumper system as recited in claim 2 wherein said extension means comprises a plurality of translatable elements having opposing ends rigidly secured to a peripheral surface of said first and second impact members respectively, said translatable elements having a monotonically decreasing contour from a location substantially midpoint between said impact members and being translatable in an outward direction with respect to said longitudinal axis when said force having said longitudinal component is applied to said bumper system.
8. The bumper system as recited in claim 7 wherein said plurality of translatable elements are angularly oriented substantially equidistant from each other around said periphery of said impact members.
9. The bumper system as recited in claim 1 wherein said shroud means includes an elastic housing having a longitudinally directed through opening, said impact frame being insertable within said through opening for releasably securing said impact frame to said elastic housing.
10. The bumper system as recited in claim 9 wherein said elastic housing is constructed of a cellular material, said housing being annularly shaped in a cross-sectional plane normal to said longitudinal axis.
11. The bumper system as recited in claim 10 wherein said annularly shaped housing defines a pair of opposing longitudinal end surfaces, said housing having a radial wall thickness monotonically increasing to a maximum thickness substantially midpoint of said opposing longitudinal end surfaces.
12. The bumper system as recited in claim 10 wherein said annularly shaped housing is constructed of a high density cellular material.
13. The bumper system as recited in claim 12 wherein said annularly shaped housing is constructed of a high density polyurethane material.
14. The bumper system as recited in claim 13 wherein said housing is constructed of a polyurethane material having a density range between 10 and 80 pounds/cu.ft.
15. A method for reversibly absorbing bumper loads including the steps of: a. displacing a substantially rigid impact frame having a predetermined longitudinally directed unloaded geometric configuration; b. compressing a shroud member of elastomeric material, said shroud member surrounding and being contiguous to said impact frame; and, c. forcing said impact frame to said unloaded geometric configuration primarily through a transverse compressive force of said shroud member acting on said impact frame.
16. The method for reversibly absorbing bumper loads as recited in claim 15 wherein the step of displacing said substantially rigid impact frame is preceded by the step of applying a force to said impact frame, said force having a component in said longitudinal direction.
17. The method for reversibly absorbing bumper loads as recited in claim 16 wherein the step of displacing said substantially rigid impact frame includes the step of longitudinally compressing said impact frame a predetermined distance responsive to said applied force.
18. The method for reversibly absorbing bumper loads as recited in claim 17 wherein the step of displacing said substantially rigid impact frame includes the step of outwardly extending said impact frame from a longitudinal axis of said frame when said force is applied.
19. The method for reversibly absorbing bumper loads as recited in claim 15 wherein the step of compressing said shroud member includes the step of displacing said shroud member in a direction substantially transverse said longitudinal direction.
20. The method for reversibly absorbing bumper loads as recited in claim 19 wherein the step of compressing said shroud member includes the step of longitudinally compressing said shroud member a predetermined distance.
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