US 12,409,822 B2
Vehicle braking system comprising a service brake indicator device and vehicle provided with such a system
Claudino Goncalves, Ribeaucourt (FR); and Jérémie Sales, Amiens (FR)
Assigned to Wabtec Hauts-de-France, Amiens (FR)
Appl. No. 17/436,394
Filed by Wabtec Hauts-de-France, Amiens (FR)
PCT Filed Mar. 2, 2020, PCT No. PCT/FR2020/050415
§ 371(c)(1), (2) Date Sep. 3, 2021,
PCT Pub. No. WO2020/178517, PCT Pub. Date Sep. 10, 2020.
Claims priority of application No. 1902198 (FR), filed on Mar. 4, 2019.
Prior Publication US 2022/0144233 A1, May 12, 2022
Int. Cl. B60T 13/36 (2006.01); B60T 13/66 (2006.01); B60T 17/16 (2006.01); B60T 17/22 (2006.01); B61H 13/04 (2006.01); F16D 55/224 (2006.01); F16D 65/18 (2006.01); F16D 65/44 (2006.01); F16D 65/56 (2006.01); F16D 125/24 (2012.01)
CPC B60T 13/365 (2013.01) [B60T 13/665 (2013.01); B60T 17/16 (2013.01); B60T 17/225 (2013.01); B60T 17/228 (2013.01); B61H 13/04 (2013.01); F16D 55/2245 (2013.01); F16D 65/183 (2013.01); F16D 65/44 (2013.01); F16D 65/567 (2013.01); F16D 2125/24 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A braking system having brakes with at least one lining or at least one block, the braking system comprising:
a body;
a braking linkage configured to act on at least one of the brakes;
a service brake comprising a braking piston movable relative to the body to act on the braking linkage and delimiting a service brake pressure chamber with the body, the service brake pressure chamber configured to be supplied by a first pneumatic pressure agent to place the braking piston in a service braking position;
a parking brake configured to act on the braking piston of the service brake and having a working configuration and a resting configuration, the parking brake comprising a blocking device movable relative to the body to act on the braking piston and having a first position and a second position in which the blocking device is configured to immobilize the braking piston in the service braking position with the parking brake in the working configuration;
a control device movable relative to the body, the control device and the body configured to delimit a parking brake pressure chamber that is configured to be supplied by a second pneumatic pressure agent, the control device having a locking position in which the control device is configured to hold the blocking device in the second position; and
a service brake indicator device configured to receive at least an item of information representing one or more of supply and/or venting of the service brake pressure chamber by the first pneumatic pressure agent,
wherein the service brake indicator device comprises one or more of a first service contactor device connected to a first supply pipe of the service brake, a second service contactor device connected via a state pipe to a parking brake pipe, or a third service contactor device connected via the state pipe to the parking brake pipe,
wherein the service brake indicator device comprises a fourth service contactor device which is connected to a service brake pipe and the first, second, and third service contactor devices, the second and third contactor devices connected to the first and fourth service contactor devices and to visual service indication devices of the indicator device,
wherein one or more of the first, second, third, or fourth service contactor devices are formed by pressure switches or sensors,
wherein
(a) when the first service contactor device receives the item of information from a first supply pipe and the third service contactor device receives the item of information from the state pipe according to which there is no parking brake setting in the parking brake pipe, the service brake is in an engaged state and the visual service indication device is turned on; or
(b) when the fourth service contactor device receives the item of information from the state pipe according to which there is a service brake setting in the service brake pipe and the third service contactor device receives the item of information from the state pipe according to which there is a parking brake setting in the parking brake constituting a setting for application of the parking brake, the service brake is in the engaged state and the visual service indication device is turned on.