Brakes – Operators – Spring
Reexamination Certificate
2005-01-11
2005-01-11
Graham, Matthew C. (Department: 3683)
Brakes
Operators
Spring
C188S071100, C188S173000
Reexamination Certificate
active
06840354
ABSTRACT:
The invention relates to a brake actuator, especially for a rail vehicle brake, comprising a service brake unit with a brake force generator for applying and/or releasing the brake, an accumulator brake unit with an energy accumulator device for accumulating and delivering energy for applying the brake as an operative emergency brake and/or as a parking brake, and a force conversion device for converting the energy that is provided by the brake force generator and/or the energy accumulator device into a brake application movement. The invention provides that the brake actuator has an additional energy accumulator device for accumulating and delivering energy for applying and/or releasing the brake. The additional energy accumulator device and the brake force generator can be designed in such a way that the force required of the brake force generator during a braking operation in order to generate a defined brake application force level that is greater than zero but less than the maximum brake force is zero.
REFERENCES:
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patent: 5092432 (1992-03-01), Taig
patent: 6722477 (2004-04-01), Wolfsteiner et al.
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Grundwürmer Richard
Staltmeir Josef
Vohla Manfred
Barnes & Thornburg LLP
Graham Matthew C.
Knorr-Bremse Systeme für Schienenfahrzeuge GmbH
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