Patent ID: 7918245
Filing Date: 2011-04-05
Classification: F15B,Y10T

Abstract:
1. A hydraulic pressure reservoir comprising: at least one pressure chamber that is formed between two opposed, movable inner boundary members, each of which inner boundary members includes a spring cover and an abutting diaphragm spring that acts against the associated inner boundary member to urge it toward the opposed inner boundary member; and an outer boundary member peripherally surrounding the movable inner boundary members and having a U-shaped cross section along at least a part of its periphery, wherein the outer boundary member axially supports the diaphragm springs in a fixed axial position, and wherein each of the diaphragm springs includes a radially outer end that is pivotally supported by a housing-mounted pivot ring for pivotal movement of the radially outer end of the diaphragm spring relative to the outer boundary member and includes a radially inner end that is pivotally supported by a spring-cover-mounted pivot ring for pivotal movement of the radially inner end of the diaphragm spring relative to the inner boundary member.