Importance

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Abstract

A switchable support element (1) comprising a housing (2) in whose bore (4) an axially displaceable pressure piston (7) extends, said support element (1) comprising at least one coupling element (8) for an optional coupling of the pressure piston (7) in its axially extended position relative to the housing (2), said pressure piston (7) being biased in an outward direction from the housing (2) by at least one lost motion spring (9). The housing (2) ends in a solid bottom (10) which comprises a central aperture (12) that starts from its inner side (11) and is intersected radially by a reception (13) of the housing (2) comprising the at least one coupling element (8), the pressure piston (7) extending with an outer peripheral surface (14) of its head-side guide section (15) directly in the bore (4) of the housing (2), said guide section (15) connects in bore direction to a radially reduced center piece (16) that merges into a head-distal end piece (17) that is guided in the aperture (12) of the bottom (10), the lost motion spring (9) surrounds the center piece (16) and is supported at one end on the inner side (11) of the bottom (10) while acting at a further end against an underside (18) of the guide section (15), and the end piece (17) comprises an entraining surface (19) for at least one coupling element (8) for achieving coupling.

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First Claim