Movable or removable closures – With operator for movably mounted closure
Patent
1974-09-25
1976-05-25
Downey, Kenneth
Movable or removable closures
With operator for movably mounted closure
40386, 49340, 9 2, E05F 1504
Patent
active
039583686
ABSTRACT:
The present invention relates to a fluid pressure powered actuator for imparting relative angular movement between two members, connected together by a hinge, comprising an elongated inflatable flexible conduit of substantial constant surface area, connected between the two members with its longitudinal axis substantially parallel to the hinge pivot axis and with the two members substantially equispaced around the conduit whereby on inflation, the conduit exerts a pulling force between the two members to impart relative angular movement therebetween.
REFERENCES:
patent: 3047257 (1962-07-01), Chester
patent: 3202061 (1965-08-01), Johnston
patent: 3375619 (1968-04-01), Hurkamp
Downey Kenneth
Institute for Industrial Research and Standards
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