Abstract: A pressure vessel comprising a rigid container having a deformable partition therein defining two chambers for fluid, each having a fluid port leading thereinto with an elongated apertured central guide tube for said partition extending axially in said container having at least one end secured to one of said ports. A flexible closure member encompasses said guide tube and the apertures thereof, said closure member having a plurality of closure elements normally extending radially outward from said tube, each closure element comprising a pair of spaced walls joined at their outer ends, one of said walls having apertures therethrough.

Abstract: Method of manufacturing an accumulator device including a shell portion having an open mouth and a cap member affixed over the open mouth after a bladder assembly has been secured within the shell portion of the pressure vessel. The method comprises in the provision of an exterior annular weld connecting the cap member to the outer wall portion of the vessel as well as an interior weld connection between the interior wall portion of the cap member and the upwardly directed end edge of the mouth of the pressure vessel. By locating the metallic skirt member which functions to support the bladder such that the top of the skirt forms a dam for containing the weld which secures the cap member interior to the uppermost edge of the pressure vessel, the possibility of weld fragments falling into the bladder causing damage to the latter is minimized.

Abstract: The present invention relates to a hydraulic accumulator and particularly to a low cost pressure accumulator having improved life cycle and operating characteristics. More particularly, the invention pertains to a hydraulic accumulator wherein means are provided for prolonging the bladder life and effecting an improved seal at the oil port end of the device.

Abstract: The present invention is directed to an accumulator device and method of making the same. The pressure vessel in accordance with the invention includes a shell portion having an open mouth and a cap member affixed over the open mouth after a bladder assembly has been secured within the shell portion of the pressure vessel. A characterizing feature of the invention resides in the provision of an exterior annular weld connecting the cap member to the outer wall portion of the vessel as well as an interior weld connection between the interior wall portion of the cap member and the upwardly directed end edge of the mouth of the pressure vessel.

Abstract: An accumulator device is characterized in the provision of plural mechanisms for maintaining the oil port sealing valve member in open position, one said mechanism comprising a spring and the other comprising a control device member which may be activated to its valve stem releasing condition responsive to pressure drops of a predetermined magnitude or after a predetermined time interval.

Abstract: A pressure vessel comprises a rigid envelope enclosing a chamber and consisting of a body and cover, the rim of the cover being inserted in the rim of the body, and the body and cover being secured to each other. Defined between the overlapping rims is an annular groove adapted to receive a flange at the periphery of a circular flexible diaphragm, which serves to divide the chamber into two compartments of variable volume. There is a fluid orifice in both the body and cover, the two orifices being axially alinged and communicating one with each variable-volume compartment. To ensure a good seal between the compartments, and to enhance retention of the flange in the groove, the annular groove is of less height and greater width than the flange on the diaphragm, before the flange is sandwiched into the groove between the rims of the cover and body, so that the flange is deformed into the groove, when the cover is assembled on the body.

Abstract: The present invention relates to an apparatus for dampening pulses in a hydraulic system and is characterized by the provision of a hydraulic accumulator device having disposed in the hydraulic flow path a baffle member shiftable from the exterior of the dampener in a direction normal to the flow path and toward and away from the oil port of the accumulator whereby the device may be critically adjusted or tuned to deal effectively with pulses of a variety of frequencies and amplitudes.

Abstract: A pulse dampener device in which the effective cross section of the flow path through the dampener assembly may readily be varied thereby enabling the device to be adjusted or tuned to deal most effectively with any of a variety of pulse variables encountered in a particular installation.

Abstract: An accumulator device or the like comprising a pressure vessel having a cylindrical interior with a port at each end and an elastomeric separator or bladder interposed between the ports. An annular supporting member engages an enlarged bead at the open mouth portion of the bladder. The device is characterized by the supporting member which is in a non-critical manner bonded to the inner walls of the casing, cooperating with the bead by virtue of the special shapes thereof to coordinate with the bead and with the casing in such manner that the bead is deformed in the mounted position thereof so as to define a fluid-tight seal between the supporting member and casing. The spacing of the terminal end of the supporting member remote from the portion connected to the casing is spaced from the inner wall of the casing a radial distance substantially equal to or greater than the wall thickness of the bladder.

Abstract: The present invention is directed to a hydropneumatic accumulator comprising a pressure vessel or casing having a cylindrical bore, a cylindrical container closed at both ends slidably mounted within said bore, the container having restricted flow passages communicating the bore of the casing to the interior of the container, and an expansible bladder member disposed within the container adapted to separate the container into two chambers communicating, respectively, with the bore of the casing and a gas input orifice in the end of the container external of the casing.

Abstract: A pressure vessel comprising a casing or container formed from two substantially cup-shaped shells, each of said shells having their free edges or rims located in juxtaposition by means of an internal annular retainer member which properly spaces such free edges to permit connection thereof by an annular weld and which also serves as the support for a deformable partition positioned in the container. The retainer member formed from a metal having a melting point below that of the shells has a first thickened annular portion of relatively great mass on one side of said annular weld and a second annular portion of smaller mass on the other side of said annular weld, said annular portions having outer surfaces in intimate contact with the inner surface of the casing and define two annular contact zones separated by an intervening zone in which the weld is formed, said deformable partition being supported by said retainer member at the edge of said first annular portion remote from the annular weld.

Abstract: This invention relates to a pressure vessel and more particularly to a pressure accumulator having a substantially cylindrical body portion with a port at one end and a mouth at the other with a cover member adapted to close such mouth and also having a port. An annular supporting member of rigid sheet metal is positioned in the pressure vessel and has a deformable bladder having a rim bonded to the supporting member and defining two variable volume chambers therein in communication respectively with such ports.

Abstract: The invention relates to a pressure vessel comprising a container of rigid material having a cylindrical portion defining an open mouth which is formed by reversely bending inwardly the end of said cylindrical portion to form a cylindrical flange portion. The curved junction between the flange portion and the cylindrical container portion is a semi-circle, the flange portion extending parallel to the cylindrical container portion beyond a diametrical line between the ends of the semi-circular junction. A closure assembly comprising a cylindrical plug having a reduced diameter sleeve defining an annular shoulder is positioned in said container mouth, with said shoulder engaging the rim of said cylindrical flange, the latter being restrained from transverse inward movement by abutment against said sleeve.

Abstract: This invention relates to a pressure vessel for gas and oil under pressure comprising a container of rigid material having a cylindrical body portion defining a mouth at one end and closed at its other end, said closed end having an axial port. An annular supporting member of resilient sheet metal has a cylindrical upper portion of diameter just slightly less than that of the mouth portion of the container so that it may readily fit therein. An annular lower portion depends from said upper portion and the rim of a bladder is bonded to said lower portion, with a portion of the bladder material on the outer surface of said annular lower portion abutting and being compressed against the inner wall surface of the container to define an oil seal.

Abstract: This invention relates to a pressure vessel and more particularly to a pressure accumulator of the type including a rigid container having a pair of ports at its respective ends with a deformable partition or bladder therein having a mouth at one end affixed to one of said ports, said bladder separating two fluids such as gas or liquid under pressure in said container.The bladder is of the type formed from two separate sections, each substantially cup-shaped, so that when the rims of the sections are joined, a closed container will be formed.As the bladder expands t o force liquid from the other port of the container, stress will be imparted to the wall of the bladder as a result of the stretching thereof, and such bladder wall is conformed to minimize the stress that would otherwise be imparted to the junction between the two sections of the bladder.

Abstract: This invention relates to a method of forming a locking ring for the closure plug of a pressure vessel for storing fluid under pressure and particularly of the type having a deformable partition such as a bladder therein. The closure plug has a flanged inner end of diameter slightly less than the diameter of the port of the pressure vessel into which it is to be inserted and the locking ring normally is of greater diameter than said port and is foldable for insertion through said port so that it may then be restored to its original shape to encompass the closure plug and restrain outward movement thereof from such port.