Extendable cylinders of elastically variable length for use in a

Details Extendable cylinders of elastically variable length for use in a Extendable cylinders of elastically variable length for use in a

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.

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