Patent ID: 7293750

Claim:
A suction base for the support of an apparatus comprising a housing ( 1 ) of a hard plastic material, said housing having an opening surrounded by a circumferential housing support edge ( 7 ), a suction membrane ( 2 ) of a plasticizer-containing PVC extending across the housing opening adjacent said support edge ( 7 ), an operating mechanism ( 3 , 4 ) for moving the suction membrane between a release position and an operating position in which a vacuum is generated between the suction membrane ( 2 ) and a support surface to which the suction base is to be attached, whereby the housing support edge is pressed onto said suction membrane ( 2 ) along the circumferential edge ( 7 ) of the housing ( 1 ), and a separating element ( 8 ) disposed between the suction membrane ( 2 ) and the housing ( 1 ) at least in the area of said support edge, said separating element ( 8 ) consisting of one of a metal sheet and a metal foil, which does not stick to the suction membrane of PVC upon the release of plasticizer therefrom during heat exposure of the suction membrane ( 2 ).