Reservoir tank
AssigneeTokico Ltd.
InventorTakeshi Sakazume
Life of this patent
Estimating the term…
Abstract
A reservoir tank having a flexible diaphragm disposed above the liquid received in the reservoir tank for intercepting the liquid from being exposed to atmospheric air. The diaphragm has a corrugated form consisting of at least one annular upwardly projecting portion and at least on annular upwardly projecting portion surrounded by the annular downwardly projecting portion, and at least one cut-out portion is formed in the annular downwardly projecting portion to define a horizontally extending escape passage across the annular downwardly projecting portion.
Claims4
A reservoir tank having a flexible diaphragm disposed above the liquid received in the reservoir tank for preventing the liquid from being exposed to atmospheric air, wherein said diaphragm includes at least one set of annular upwardly and downwardly projecting portions constituting a corrugated portion for permitting expanding or contracting of the diaphragm in the vertical directions, and at least one cut-out portion in the annular downwardly projecting portion for allowing the fluid which is trapped in a space, which is surrounded by the annular downwardly projecting portion, to escape in the horizontally outward direction.
A master cylinder for use in a hydraulic braking system of a vehicle and having a reservoir tank integrally formed therewith, wherein a flexible diaphragm is disposed above the liquid received in the reservoir tank for preventing the liquid in the reservoir tank from communicating with the atmosphere, said diaphragm including at least one set of annular upwardly and downwardly projecting portions constituting a corrugated portion to allow the diaphragm to be vertically expanded or contracted, and at least one cut-out portion in the annular downwardly projecting portion for allowing the fluid trapped in a space, which is surrounded by the annular downwardly projecting portion, to escape in the horizontally outward direction.
Dependencies are inferred from the claim text.