US 12,241,489 B2
Pneumatic device with sealing means and method therefor
Ingo Fuhrmann, Langenhagen (DE); Karl-Heinz Riediger-Janisch, Hannover (DE); and Jan Weinacht, Hannover (DE)
Assigned to ZF CV Systems Europe BV, Brussels (BE)
Appl. No. 17/915,254
Filed by ZF CV Systems Europe BV, Brussels (BE)
PCT Filed Mar. 29, 2021, PCT No. PCT/EP2021/058145
§ 371(c)(1), (2) Date Sep. 28, 2022,
PCT Pub. No. WO2021/198174, PCT Pub. Date Oct. 7, 2021.
Claims priority of application No. 10 2020 108 757.8 (DE), filed on Mar. 30, 2020.
Prior Publication US 2023/0125466 A1, Apr. 27, 2023
Int. Cl. F15B 21/044 (2019.01); B60T 17/00 (2006.01); F16K 24/04 (2006.01); F16K 31/22 (2006.01)
CPC F15B 21/044 (2013.01) [B60T 17/002 (2013.01); F16K 24/046 (2013.01); F16K 31/22 (2013.01)] 26 Claims
OG exemplary drawing
 
1. A brake valve (1) comprising:
at least one venting path (10) for venting the brake valve (1) in an outflow direction (R1), wherein the venting path (10) comprises:
a first volume (12), through which a flow can pass;
a first compressed-air passage (14) pneumatically connecting the first volume (12) to a pressurized part (16) of the brake valve (1);
a sealing mechanism (18) that changes at least between a normal state (Z1) and a sealing state (Z2);
wherein in the normal state (Z1) of the sealing mechanism (18) a flow passes through the first compressed-air passage (14) both in the outflow direction (R1) and in an oppositely directed inflow direction (R2), and
wherein in the sealing state (Z2) of the sealing mechanism (18) a flow passes through the first compressed-air passage (14) only in the outflow direction (R1).