EP0042645A2
Expired / Lapsed
EP
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Obstacle protection arrangement
Assignee: STAAT DER NEDERLANDEN te dezen vertegenwoordigd door de Directeur-Generaal van de Rijkswaterstaat
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Filing: 1981-06-12
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Granted: —
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Expires: 2001-06-12
Abstract
Abstract Obstacle protection arrangement composed of a series of interconnected deformable segments (A) each comprising a gate-shaped support member (G) and a box structure (N) containing ripple tubes (B), both sides of the arrangement being formed by overlapping flank members (C) such that during a front collision there will be dissipation of energy by deformation, whereas during a side collision the arrangement behaves like a rigid girder.
Inventors
- 👤 Theodorus Johannes Maria Van Schie
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 22:27
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/14; E01F15/145; E01F15/146
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
168 words
Arrangement for protecting an obstacle, the arrangement comprising a deformable spatial structure wherein a dissipation of energy is brought about during a deformation resulting from a collision with a moving object (a road vehicle), which arrangement is composed of a series of segments which are interconnected - in the direction of motion as anticipated - and which are each comprised of at least one gate-shaped support member standing on the ground and positioned transversely to said direction, as well as of a box-like structure fastened thereto and internally provided with deformation elements, a flank member being affixed on both sides of each segment, characterized in that - viewed in the direction of motion as anticipated - only the rear support member (G) is fastened to a foundation, the front support member being disposed in a horizontal guideway (H) allowing displacement in the direction of motion only, and in that the segments (A) are fixedly coupled to one another, so that the whole arrangement behaves like a rigid girder.
Claim 2
Dependent Claim
60 words
Arrangement according to claim 1, characterized in that on its frontal face each box (N) is affixed to the associated support member (G) of the segment (A) and is provided on its back face with two horizontal flange parts having holes cooperating with the holes in the support member of the adjoining segment, through which fastening bolts have been fitted.
Claim 3
Dependent Claim
57 words
Arrangement according to claim or 2, characterized in that the box-like structure (N) is provided with ripple tubes (B) which absorb the major portion of the work in a collision, and in that, if required, the deformation resistance of the successive segments - as viewed in the direction of motion - increases by providing additional ripple tubes.
Claim 4
Dependent Claim
38 words
Arrangement according to any one of the preceding claims, characterized in that the upper and lower side of the box-like structure (N) are beaded a little outwardly, at least one rod (S) being disposed between these expanded areas.
Claim 5
Dependent Claim
99 words
Arrangement according to any one of the preceding claims, characterized in that each segment (A) is provided with flank members (C) extending at both extremities beyond the segment concerned, so that there is an overlapping with neighboring flank members, and in that the connection of the overlapping extremities of the flank members (C) with the adjoining segments (A) is also realized by means of at least one double- angled strip (D) forming a connection with the support member (G), said strip affording a change in the mutual position, but no substantial change in the angle of the flank extremities.
Claim 6
Dependent Claim
38 words
Arrangement according to any one of the preceding claims, characterized in that the flank members are diverging at an angle of 15° to 20°, and are thus capable of forming an obstacle protector means in a pointed area.
Claim 7
Dependent Claim
40 words
Arrangement according to claim 6, characterized in that the flank members (C) are provided with longitudinal undulations engaging one another at overlapping sections, an extra flange part (E) forming a guide when the flank members are sliding past each other.
Claim 8
Dependent Claim
50 words
Arrangement according to any one of the preceding claims, characterized in that - viewed in the direction of motion - the frontal segment (A') is provided with a plate bent about the front and forming a nose apron (C'), several strips (U) in crosswise arrangement being secured behind said apron.
References Cited (Backward Citations)
No citation records indexed.
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