Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
October 22, 2019
Patent Application Number
15301312
Date Filed
March 27, 2015
Patent Citations Received
Patent Primary Examiner
Patent abstract
An elevator may include a brake apparatus such as a safety apparatus or a service brake, for example. The brake apparatus may be designed to generate a stepped braking force for braking an elevator car of the elevator. A plurality of brake cylinder assemblies may be configured so as to supply different braking forces. The brake cylinder assemblies may in some cases include a piston, a spring, and a brake pad. Moreover, a valve assembly may be utilized by one or more of the brake cylinder assemblies. Additional features of the brake apparatus may involve a compressor, a pressure accumulator, a pressure regulating valve.
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