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US 6,752,450 B2Granted
Formed energy absorber
AssigneeOakwood Energy Management, Inc.
InventorsPhillip Patrick Carroll, III, Joel Matthew Cormier
Life of this patent
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Abstract
An energy absorber comprising a base and a plurality of recesses extending from the base. At least some of the plurality of recesses have a rim, a first wall extending between the base and the rim, a first floor, and a second wall extending between the rim and the first floor. At least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, where alpha and beta lie between 1 and 45 degrees.
Claims25
An energy absorber comprising:
- a base;
- and
- a plurality of recesses extending from the base, at least some of the plurality of recesses becoming at least partially compressed during energy absorption and having
- a rim;
- a first wall extending between the base and the rim;
- a first floor;
- and
- a second wall extending between the rim and the first floor so that as the first and second walls collapse during energy absorption, some deformation occurs elastically, thereby providing some spring-back following initial deformation,
- wherein at least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, where alpha and beta lie between 1 and 45 degrees, and wherein some of the recesses cooperate to afford mutual support in decelerating an object that imparts the impacting force.
6 more elements
An energy absorber comprising:
- a base;
- and
- a plurality of recesses extending from the base, at least some of the plurality of recesses having
- a rim;
- a first wall extending between the base and the rim;
- a first floor;
- and
- a second wall extending between the rim and the first floor
- wherein at least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, and the angles alpha and beta are between five and fifteen degrees.
6 more elements
An energy absorber comprising:
- a base;
- and
- a plurality of recesses extending from the base, at least some of the plurality of recesses having
- a rim;
- a first wall extending between the base and the rim;
- a first floor;
- and
- a second wall extending between the rim and the first floor
- wherein at least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, and the angle alpha is greater than the angle beta.
6 more elements
An energy absorber comprising:
- a base;
- and
- a plurality of recesses extending from the base, at least some of the plurality of recesses having
- a rim;
- a first wall extending between the base and the rim;
- a first floor;
- and
- a second wall extending between the rim and the first floor
- wherein at least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, and the angle beta is greater than the angle alpha.
6 more elements
An energy absorber comprising:
- a base;
- and
- a plurality of recesses extending from the base, at least some of the plurality of recesses having
- a circular rim;
- a first wall extending between the base and the rim;
- a first floor;
- and
- a second wall extending between the rim and the first floor
- wherein at least some of the plurality of recesses are oriented such that their first and second walls are inclined respectively at angles alpha and beta to a major incident component of the impacting force, where alpha and beta lie between 1 and 45 degrees;
- and
- a second floor and a third wall extending between the first floor and the second floor.
8 more elements
An energy absorber comprising:
- a base;
- a plurality of first recesses extending from the base, at least some of the plurality of recesses becoming at least partially compressed during energy absorption and having
- a rim;
- and
- a first wall extending between the base and the rim;
- wherein at least one of the first recesses has an inverted second recess defined within the first recess, the second recess having
- a second floor;
- and
- a second wall extending between the rim and the second floor, so that as the first and second walls collapse, some deformation occurs elastically, thereby providing some spring-back following initial deformation, and
- wherein at least some of the plurality of first and second recesses are oriented such that their first and second walls are respectively inclined at angles alpha and beta to a major incident component of the impacting force, where alpha and beta lie between 1 and 45 degrees, wherein some of the recesses cooperate to afford mutual support in decelerating an object that imparts the impacting force.
7 more elements
An energy absorber shaped as a volcano, comprising:
- a basal connecting member;
- a first wall extending upwardly from the basal connecting member toward a rim, the first wall at least partially collapsing during energy absorption;
- a crater extending downwardly from the rim, the crater becoming at least partially compressed during energy absorption and including
- one or more second walls extending between, a perigee and the rim, so that as the first and one or more second walls collapse, some deformation occurs elastically, thereby providing some spring-back following initial deformation,
- wherein the first wall and at least some of the one or more second walls are inclined respectively at angles alpha and beta to a major incident component of an impacting force, where alpha and beta lie between 1 and 45 degrees, wherein one or more of the craters cooperate to afford mutual support in decelerating an object that imparts the impacting force.
2 more elements
Dependencies are inferred from the claim text.