Manual brake release mechanism for rail vehicles
AssigneeWabtec Holding Corp.
InventorsMichael Koziol, Richard Wayne Plegge, Peter Paul Gregar
Life of this patent
Estimating the term…
Abstract
A spring-biased lever arm mechanism for operating an operating lever of a parking brake release mechanism. The lever arm mechanism includes a lever arm mounted on a pivot pin, a torsion spring disposed on the pivot pin, and first and second cable release mechanism. A manually operated parking brake release mechanism is also provided for a railway vehicle including a brake actuator, an operating lever associated with the brake actuator to manually release an applied braking force, and the spring-biased lever arm mechanism for operating the operating lever.
Claims20
A spring-biased lever arm mechanism for operating an operating lever of a parking brake release mechanism, comprising:
- a lever arm mounted on a pivot pin, said lever arm comprising a front appendage portion in engagement with the operating lever, a rear appendage portion, and a notch defined in one side of the lever arm between a pair of notch elements;
- a torsion spring disposed on the pivot pin;
- a first cable release mechanism comprising a first release cable having one terminal end with a first operator handle connected thereto and an opposing terminal end connected to the lever arm proximal of the front appendage portion;
- and
- a second cable release mechanism comprising a second release cable having one terminal end with a second operator handle connected thereto and an opposing terminal end connected to the rear appendage portion of the lever arm,
- wherein application of a pulling force to the first operator handle or the second operator handle causes pivotal movement of the lever arm on the pivot pin and stores energy in the torsion spring, and release of the first operator handle or the second operator handle automatically returns the lever arm to a neutral position.
A manually operated parking brake release mechanism for a railway vehicle, comprising:
- a brake actuator;
- an operating lever operatively connected to the brake actuator to manually release an applied braking force;
- and
- a spring-biased lever arm mechanism for operating the operating lever, comprising:
- a lever arm mounted on a pivot pin and comprising a front appendage portion in engagement with the operating lever, a rear appendage portion, and a notch defined in one side of the lever arm between a pair of notch elements;
- a torsion spring disposed on the pivot pin;
- a first cable release mechanism comprising a first release cable having one terminal end with a first operator handle connected thereto and an opposing terminal end connected to the lever arm proximal of the front appendage portion;
- and
- a second release mechanism comprising a second release cable having one terminal end with a second operator handle connected thereto and an opposing terminal end connected to the rear appendage portion of the lever arm,
- wherein application of a pulling force to the first operator handle or the second operator handle causes pivotal movement of the lever arm on the pivot pin and stores energy in the torsion spring to manually release the applied braking force, and release of the first operator handle or the second operator handle automatically returns the lever arm to a neutral position.
A spring-biased lever arm mechanism for operating an operating lever of a parking brake release mechanism, comprising:
- a lever arm mounted on a pivot pin, said lever arm comprising a front appendage portion in engagement with the operating lever;
- a torsion spring disposed on the pivot pin;
- and
- at least one cable release mechanism associated with the lever arm proximal of the front appendage portion,
- wherein application of a pulling force to the at least one cable release mechanism causes pivotal movement of the lever arm on the pivot pin and stores energy in the torsion spring, and release of the at least one cable release mechanism automatically returns the lever arm to a neutral position.
Dependencies are inferred from the claim text.