Method and device for determining the surface contour in an elas

Details Method and device for determining the surface contour in an elas Method and device for determining the surface contour in an elas

1997-01-21

1998-05-05

Dombroske, George M.

Measuring and testing

Surface and cutting edge testing

Roughness

73862621, 73862632, G01B 528

Patent

active

057476764

ABSTRACT:
A method and a device for determining the surface contour of an elastic seat cushion deformable under load are provided. Through the use of a measuring mat placed on the seat cushion, after the load is relieved, the resultant deformed state corresponding to the deformed surface of the cushion is preserved by applying a vacuum to the measuring mat. The three-dimensional surface contour of the measuring mat fixed in its deformed state is measured with a multicoordinate measuring device in known fashion. The measuring mat consists of two vacuum-tight material webs, especially plastic films, connected vacuum-tight with one another to form a pocket having a vacuum connection, with the pocket being filled with a granulate, preferably a foam granulate.

REFERENCES:
patent: 3614237 (1971-10-01), Kyle
patent: 5163333 (1992-11-01), Brubaker et al.
patent: 5248185 (1993-09-01), Weingartner et al.
patent: 5595806 (1997-01-01), Korfmacher

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