Master cylinder

Patent · Tue May 17 04:00:00 EDT 1988

OSTI ID:7224624

Yamamoto, K; Takeuchi, H

A master cylinder is described comprising: (a) a cylinder body having a stepped bore including larger and smaller diameter sections; (b) a stepped piston having larger and smaller diameter heads slidably fitted respectively in the larger and smaller diameter sections defining a first pressure chamber and a second pressure chamber; (c) a first valve disposed in the coupling hole and openable for allowing a fluid to flow from the reservoir into the first pressure chamber in response to a negative pressure developed in the first chamber at the time the piston moves rearwardly from a forward position; (d) a second valve disposed in the coupling hole and openable for allowing fluid to be released from the first pressure chamber into the reservoir in response to a pressure in the first pressure chamber exceeding a predetermined level at the time the piston is moved to a forward position; and (e) the first valve including an annular plate fixedly mounted in the coupling hole of the cylinder body, an annular sealing member fixedly attached to the plate; and an annular lip projecting from the surface, a valve body having an outwardly extending flange adjacent one end thereof.

• Assignee: Aisin Seiki Kabushiki Kaisha, Aichi
• Patent Number(s): US 4744219
• OSTI ID: 7224624
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
CONTROL EQUIPMENT
CYLINDERS
DESIGN
ENGINES
EQUIPMENT
FLOW REGULATORS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
OPERATION
PISTONS
SEALS
VALVES