Patent ID: 11959526
Assignee: BASF POLYURETHANES GMBH
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  B | IPC B  F

Claim 17:
18. A spring element, comprising:
a longitudinal axis and a base body extending along the longitudinal axis, the base body being elastically deformable between an uncompressed basic state and a compressed state in which the base body is at least partially compressed in the direction of the longitudinal axis, and
an end portion configured for being brought into contact with a vehicle part moving relatively to the spring element;
wherein the end portion comprises a circumferential outer surface and at least one recess in the circumferential outer surface, said at least one recess extending inwards and defining a hollow space in the base body,
wherein the end portion comprises an end face, and the at least one recess is spaced apart from the end face in the direction of the longitudinal axis,
wherein the end face, in the uncompressed basic state of the base body, comprises a substantially planar surface and is oriented perpendicular to the longitudinal axis, and the at least one recess is configured to collapse to allow the end face to assume a concave shape,
wherein the base body comprises a plurality of recesses spaced-apart from one another in the direction of the longitudinal axis, in the circumferential outer surface, wherein said recesses respectively extend inwards and define a hollow space in the base body.