Pneumatic elevator by depressure

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United States of America Patent

PATENT NO 5447211
SERIAL NO

07990124

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Pneumatic vacuum lift elevator, in which the vertical shaft is a tube with smooth interior surface, preferably cylindrical, with straight axle, and the transport cab or vehicle moving inside such tube is a piston with vertical movement, with minimum play inside the tube, equipped with air suction devices at the upper end of the tube, capable of causing a sufficient pressure differential to displace such piston in controlled ascending and descending movement; completed with an air entry or intake in the lower end of the tube, and the access doors with which the tube is equipped, and which are hermetically closed on the various stopping levels.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SORS CARLOS ALBERTO3100 PARANA PROVINCIA DE ENTRE RIOS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sors, Carlos A Av. Pedro Zanni 1507 Parana Pcia., de Entre Rios, AR 2 28

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