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: 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: 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.