Gripping device operating by suction
AssigneeS.A. Joulin Sema
InventorStanislas G. L. Laverriere
Life of this patent
Estimating the term…
Abstract
The invention relates to suction prehension devices without flap valves. In particular, it relates to a suction prehension device without flap valve of the type including a case (1) connected to a suction cluster and whose base (5) is constituted of a perforated plate having on its exterior face a layer of porous material (3), such as a plastic material foam having, facing the perforations of the said plate, openings (4,6) passing through it from one side to the other, characterized in that the internal surfaces of the openings (4,6) is covered by a sealing or semi-permeable layer (12). Preferably, the sealing or semi-permeable layer (12) is constituted of a bituminous or rubbery coating.
Claims7
A suction prehension device comprising, a casing having a base plate, means on said casing for connecting the casing to a source of suction, said base plate having a plurality of perforations therein for communicating suction from within the casing to an exterior face of the base plate, a layer of low density open cell foam material extending across and fixed to the exterior face of said base plate, said layer of foam material having an outside and a plurality of openings extending through the layer from the outside surface to the base plate, said openings communicating with the perforations of the base plate, said openings having internal surface, and means for limiting air flow through the internal surfaces of the openings from the open cell foam of the foam material to enable the outside surface of the foam material to assist prehension, said means comprising, an at least partially air tight covering on the internal surfaces of the openings.
Dependencies are inferred from the claim text.