Patent ID: 11904819
Assignee: ZF ACTIVE SAFETY US INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A brake system having a wheel brake comprising:
a fluid reservoir, the pressure within the fluid reservoir being below 1 bar;
a valve assembly in fluid communication with the reservoir via a first conduit, and wherein the valve assembly is in fluid communication with the wheel brake via a second conduit, wherein the valve assembly includes:
a bypass valve having an open condition permitting fluid flow from the first conduit to the second conduit in response to the fluid pressure within the first conduit reaching 1 bar and having a closed condition when the fluid pressure within the first conduit is below 1 bar; and
a check valve in a parallel path arrangement relative to the bypass valve such that the check valve permits fluid flow from the second conduit to the first conduit, and prevents fluid flow from the first conduit to the second conduit,

wherein both the bypass valve and the check valve are normally closed; and
a first source of pressurized fluid providing fluid pressure for actuating the wheel brake, wherein the first source of pressurized fluid is selectively in fluid communication with the second conduit.