Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Juan Carlos de Ledebur0
Carlos M. Ascua0
Date of Patent
March 19, 2019
Patent Application Number
15813347
Date Filed
November 15, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
A pneumatic vacuum elevator cylinder has a cabin inserted therein. A structural plate of the cabin has a liner attached thereto. This liner has an integral bumper formed on an external surface thereof for impact the inner surfaces of the pneumatic vacuum elevator cylinder. The bumpers have a variety of features that facilitate the smooth ride of the cabin within the elevator cylinder.
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