Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1987-09-21
1989-06-27
Garrett, Robert E.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
92 90, 92103F, F01B 1900, F16J 300
Patent
active
048418455
ABSTRACT:
The device comprises on the one hand at least one substantially tightly-sealable chamber, which is bounded partly at least by a wall from an approximately resiliently distortable material, and on the other hand flexible, approximately unstretchable spiral-wound filaments which extend substantially next to one another at least about said wall, whereby part of said filaments are wound rightwards and another part thereof leftwards, and this in such a way that two arbitrary crossing filaments may undergo some angular displacement relative to one another, and the one end each said filaments on the one side of said chamber is fixed relative to a working point, and the other end thereof on the opposite side of said chamber is fixed relative to another working point, and whereby further at least one feed opening is provided in said chamber, wherethrough a pressurized gas or liquid may be fed and said wall is distortable at least along one direction cross-wise to the line joining both said working points, in such a way that by regulating the gas or liquid pressure inside the chamber, a relative displacement of said working points occurs.
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Denion Thomas
Garrett Robert E.
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