Tubular reinforcement in particular for a motor vehicle seat

Details Tubular reinforcement in particular for a motor vehicle seat Tubular reinforcement in particular for a motor vehicle seat

1984-02-29

1986-07-08

McCall, James T.

Chairs and seats

Bottom or back

Framework

297216, B60R 2100

Patent

active

045989508

ABSTRACT:
This reinforcement has at least one elongated slit 12 formed in the wall of the tube 1 located inside the reinforcement and therefore little exposed to impacts. The slit 12 is formed by a punching operation by urging back the material toward the interior of the tube and rolling it in the form of two curls in opposite directions. Upon impact, the reinforcement is progressively deformed in the region of the slit and thus absorbs the energy of the impact.

REFERENCES:
patent: 518766 (1894-04-01), Plecker
patent: 3147998 (1964-09-01), Hamilton
patent: 3178806 (1965-04-01), Keith
patent: 3544164 (1970-12-01), Ohta
patent: 3747450 (1973-07-01), Hudson

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