Pressure accumulator

• US 3,918,497 A
• Filed: 05/01/1974
• Issued: 11/11/1975
• Est. Priority Date: 05/30/1973
• Status: Expired due to Term

• Current Assignee: The S-P Manufacturing Corporation
• Original Assignee: Otmar Schon
• Inventors: Schon, Otmar
• Primary Examiner(s): Huckert, John W.
• Assistant Examiner(s): Gorenstein, Charles
• Application Number:
  US05/466,007
• Time in Patent Office: 559 Days
• Field of Search: 138/30 92/92,98R
• US Class Current: 138/30
• CPC Class Codes: F15B 1/14 by means of a rigid annular supporting member
• CPC Class Codes: F15B 2201/205 using gas
• CPC Class Codes: F15B 2201/3151 the flexible separating means being diaphragms or membranes
• CPC Class Codes: F15B 2201/3156 characterised by their attachment
• CPC Class Codes: F15B 2201/411 having valve means
• CPC Class Codes: F15B 2201/4155 having valve means
• CPC Class Codes: F15B 2201/435 being fixed to the separating means
• CPC Class Codes: F16J 12/00 Pressure vessels in general covers therefor F16J13/00; for particular applications, see the relevant subclasses, e.g. B01J, F17C, G21C
• CPC Class Codes: F16L 55/052 Pneumatic reservoirs

Abstract

This disclosure relates to the art of pressure vessels, more particularly of the type having a cylindrical container, one end of which is closed having a port, and the other end of which defines an open mouth. The container has a deformable bladder of resilient material positioned therein, said bladder having a large mouth with a thickened rim portion in which is molded the lower edge of an annular metal supporting member which extends outwardly from the rim with the free edge portion of said supporting member being secured to the rim of the mouth of the container which is closed by a suitable cover. The thickened rim of the bladder on the inner surface thereof has an inwardly extending annular bead molded integrally therewith in a plane below that of the lower edge of the supporting member to permit folding of the bladder without formation of a sharp pleat.

Claims

1. A pressure vessel comprising a container of rigid material having one end open and the other end closed, said closed end having an axial port therethrough, a deformable bladder of resilient material in said container, said bladder having a mouth at one end with a thickened rim portion and a reduced thickness wall portion extending from said thickened rim portion and being closed at its other end, an annular metal supporting member having an annular mounting portion of its lower edge embedded in the thickened rim portion and having an annular mounting portion at its upper edge secured to the mouth of said container, means secured to said container mouth to cover the latter, said thickened rim portion of said bladder having an annular bead on its inner surface molded integrally therewith, said annular bead lying in a plane between the lower extremity of said mounting portion and the junction between the end of said reduced thickness walL portion of said bladder and the thickened rim portion thereof.

2. The combination set forth in claim 1 in which said annular bead is semi-circular in cross section.

3. The combination set forth in claim 1 in which the outer surface of said thickened rim portion from substantially the lower extremity of said mounting portion to said junction is frusto-conical and said bead is in a plane substantially aligned with the lower end of said frusto-conical surface.

4. The combination set forth in claim 3 in which the mounting portion is inclined inwardly, the inner surface of the thickened rim portion is correspondingly inclined terminating in a plane substantially aligned with the lower extremity of said mounting portion and the inner surface of said thickened rim portion from the lower extremity of said inclined inner surface to the bead is substantially cylindrical.

5. As an article of manufacture, a bladder of resilient material having a mouth at one end with a thickened rim portion, said bladder having a reduced thickness wall portion extending from said thickened rim and being closed at its other end, an annular supporting member of rigid material affixed at its lower portion in the upper portion of said thickened rim of said bladder, said thickened rim having an annular bead on its inner surface substantially aligned with the junction between the lower edge of said thickened rim and the reduced thickness wall portion of said bladder.