Title:
DISTRIBUTING VALVE
Document Type and Number:
Japanese Patent JPS53112376
Kind Code:
A
Abstract:
A tube seat assembly for retaining a proportioning valve which is located in an outlet port of a master cylinder. The tube seat assembly has a cylindrical body with an axial bore having first, second and third diameter sections. A radial bore is located in the second diameter section adjacent a shoulder which separates the second and third diameter. A sleeve has a first diameter section concentric to said second diameter section of the axial bore and a second smaller diameter section which extends past the shoulder into the third diameter section of the axial bore. A seal surrounds the second diameter section of the sleeve and separates the second diameter section from the third diameter section of the cylindrical body. A spring connected to the cylindrical body urges the sleeve toward the shoulder in the axial bore. Fluid from a pressurizing chamber in a master cylinder enters the third diameter section of the cylindrical body, passes through the sleeve and out the first diameter section of the cylindrical body for communication to the brake fluid distribution system. When the pressure of the fluid from the pressurizing chamber reaches a predetermined value, the force created by the pressurized fluid acts on the first diameter of the sleeve and overcomes the spring to move the sleeve toward a seat in the third diameter section to interrupt the flow through the sleeve. Thereafter, any increase in the fluid pressure from the pressurizing diameter acts on the second diameter of the sleeve and moves the sleeve toward the shoulder in the cylindrical body to allow a portion of this increase in fluid pressure to be communicated to the blake fluid distribution system. The increase in fluid pressure in the second diameter section acts on the first diameter of the sleeve to again move the sleeve into engagement with the seat and interrupt communication through the sleeve. During movement of the sleeve, the radial bore in the cylindrical body communicates any fluid which flows past the seat to the reservoir to avoid any fluid losses in the brake system.
Inventors:
POORU BENJIYAMIN SHIYATSUTO
Application Number:
JP2671378A
Publication Date:
September 30, 1978
Filing Date:
March 10, 1978
Export Citation:
Assignee:
BENDIX CORP
International Classes:
B60T11/20; B60T11/34; B60T17/22; (IPC1-7): B60T11/20; B60T17/18