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US 5,490,407 AGranted
Method of and apparatus for the shaping of stainless steel membranes for vacuum-heat-insulation elements
AssigneeUmformtechnik Stade GmbH
InventorIngolf Doose
Life of this patent
Estimating the term…
Abstract
A press for forming an annular membrane of stainless steel strip joined at its ends, utilizes a rubber ram which is compressed by the pressing force between upper and lower plate of the press. The vertical force applied to the rubber ram is converted into a horizontal expansion of the latter to displace the membrane blank into a die having a bellows shape.
Claims12
A press for deforming a stainless steel membrane, comprising:
- a base plate dimensioned to absorb pressing force;
- a cover plate disposed above said base plate;
- means for generating a pressing force applied to said cover plate for displacing said cover plate in a pressing force direction toward said base plate;
- a rubber ram juxtaposed with one side of a stainless steel membrane blank between said plates;
- means between said plates for compressing said ram in said direction with said pressing force whereby said ram presses said blank in a direction transverse to said pressing force direction to deform said membrane blank;
- a forming die between said plates having a lateral configuration complementary to a shape to be imparted to the stainless steel membrane blank, said blank being juxtaposed with said die along a side of said blank opposite said rubber ram;
- said means between said plates compressing said ram in said pressing force direction with said pressing force whereby said ram presses said blank against said die in a direction transverse to said pressing force direction to deform said membrane blank into said shape against said die;
- and
- upper and lower die clamping plates between said cover and base plate and clamping said die between the clamping plates upon movement of said cover plate in the pressing force direction.
6 more elements
Dependencies are inferred from the claim text.