Expansible chamber devices – Collapsible chamber wall portion – Wall portion formed of flexible material
Patent
1987-12-28
1991-02-26
Garrett, Robert E.
Expansible chamber devices
Collapsible chamber wall portion
Wall portion formed of flexible material
417375, 417439, F01B 1904
Patent
active
049953044
ABSTRACT:
An extendable cylinder of elastically variable length and substantially invariable circular cross section is combined with another such extendable cylinder or a movable separating organ to form an operating unit. One of the extendable cylinders of the operating unit is arranged for two or three dimensional motion of a free one end as it extends. For example, symmetric, concentric elastic cylinders between common plates at opposite ends of the cylinders extend together two dimensionally.
REFERENCES:
patent: 2464095 (1949-03-01), Nies
patent: 3492946 (1970-02-01), Martin
patent: 3945770 (1976-03-01), Welker
patent: 4525127 (1985-06-01), Welker
patent: 4769992 (1988-09-01), Harada et al.
Firma Carl Freudenberg
Garrett Robert E.
Williamson Mark A.
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