PNEUMATIC ELEVATOR USING SUCTION AND ATMOSPHERIC PRESSURE AS FORCE GENERATORS
Canada Patent
Stats
Importance
Abstract
A novel pneumatic vacuum lift elevator is provided herein. Such pneumatic vacuum lift elevator includes a vertical tube of straight axis and having a smoo th interior. A movable transport cab is mounted coaxially in the tube for the transporting of passengers, etc. A plurality of access doors is provided, each door having an he rmetic closure at different levels of concordance with the respective floors. An air su ction device is arranged in the upper end of the vertical tube, the air suction device being capable of causing a depression zone above the roof of the cab, and an atmospher ic air intake is arranged at the lower area of the tube. A sliding and sealing trimming is arranged at the upper part of the external wall of the cab between the external wall and the tube so that the cab, in effect, is a piston which is in sliding contact wit h the tube. A command console for the suction device is arranged inside the cab. Valves are provided for regulating the air inflow and air outflow in the depression zone. L ocks are arranged at the cab which cooperate with supports provided in the internal wall of the vertical tube above the access doors. Braking devices in the form of brake shoes are operable by a diaphragm which is located in the roof of the cab by means of a pr essure differential.
First Claim
Family
International Classification(s)
Cited Art Landscape
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