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US 3,948,288 AGranted
Hydraulic accumulator
AssigneeGardner-Denver Company
InventorJames R. Mayer
Life of this patent
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Abstract
A flexible diaphragm for a hydraulic fluid accumulator is provided with a plurality of concentric circular ridges for engagement with the wall surface of the accumulator housing between concentric circular rows of fluid discharge openings formed in the housing. The ridges maintain the diaphragm in spaced relation to the discharge openings to prevent extrusion of the diaphragm into the discharge openings.
Claims2
A hydraulic accumulator comprising:
- housing means divided into gas and liquid chambers by a diaphragm;
- said housing means including liquid port means comprising a plurality of annular concentric rows of openings communicating with said liquid chamber;
- and
- said diaphragm being characterized by a sheet of flexible rubberlike material molded to form a plurality of annular concentric raised ridges formed by a thickened portion of said sheet, said ridges being spaced apart for engagement with corresponding continuous annular concentric surfaces formed by a wall surface of said housing means and between said rows of openings for holding said diaphragm in spaced relationship to said port means.
1 more element
Dependencies are inferred from the claim text.