A method for manufacturing a hydraulic accumulator bladder includes the following steps: bonding a rubber sheet to the gas-filled air bladder to form a bladder blank; placing the bladder blank in a vulcanization device for vulcanization to form an initial bladder product; and releasing the gas in the gas-filled air bladder of the initial bladder product, taking the air bladder out, and naturally cooling the initial bladder product to a room temperature to form a finished bladder product. The bladder manufactured by the manufacturing method is integrally formed by one-step vulcanization, and has the advantages of uniform wall thickness, smooth inner and outer surfaces, long fatigue lifetime, a simplified process, high quality and good stability.

An accumulator piston, in particular a piston for a pressure medium accumulator of a hydraulic unit of an electronically slip-controllable vehicle brake system, includes a cylindrical piston shaft, and a piston head covering the piston shaft. The piston head includes a circumferentially closed blind-hole-shaped recess having an opening. A cross section of the recess in a region of the opening has at least one smaller dimension than a cross section in a region of a base of the recess opposite the opening. The recess forms a mechanism configured to separate particles out from the pressure medium.

The present invention is an apparatus, system and method to properly align and install large pistons in cylinders that holds both the piston and cylinder being assembled, and has a number of alignment mechanisms such as but not limited to a laser.

A drop-in signal accumulator piston assembly replaces an original equipment (OE) signal accumulator piston in a vehicle transmission hydraulic circuit. The OE signal accumulator piston is positioned in a bore in a valve body that has an open end and a fluid port. The drop-in signal accumulator piston assembly includes a cylindrical sleeve having open first and second ends, one of the first and second ends defining a reduced diameter region, and a piston positioned in the sleeve. A spring is positioned in part in the piston and in part extending beyond and end of the piston. The sleeve is positioned in the valve body bore, with the piston, and the spring. A method for replacing an original equipment (OE) signal accumulator piston in a transmission hydraulic circuit is also disclosed.

The invention relates to a method for the production of a bladder accumulator (10) which separates two media chambers (16, 18) from one another in a storage housing (12) by means of a bladder body (14), comprising at least the following production steps:extruding a plastic tube over the bladder body (14);shaping the plastic tube with the integrated bladder body (14) in a molding tool that corresponds to a predeterminable plastic core container (20), andwinding at least one plastic fiber from the outside on the plastic core container (20) for the purpose of creating the storage housing (12).

The invention relates to a hydraulic accumulator, especially a piston accumulator, in which a piston part (27) separates from each other two media spaces (23, 25) inside a storage housing (1), characterized in that the piston part (27) is designed as a deep-drawn part.

A drop-in signal accumulator piston assembly to replace an original equipment (OE) signal accumulator piston in a vehicle transmission hydraulic circuit, the OE signal accumulator piston positioned in a bore in a valve body having a fluid port. A cylindrical sleeve has open first and second ends with an internal diameter that reduces at a transition therebetween. A piston is positioned in the sleeve and has open and closed ends. The cylindrical sleeve is configured such that the transition in the internal diameter limits movement of the piston within the cylindrical sleeve. A spring is positioned in part in the open end of the piston and in part extending beyond an end of the piston. The sleeve is positioned in the valve body bore, with the piston and the spring positioned in the sleeve. The sleeve, the piston, and the spring are enclosed within the valve body bore.

The present invention provides a Type 3 pressure vessel comprising a polar boss that is attached to a metallic liner and provides reinforced static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance of the liner orifice or neck region. In particular, the material of the polar boss has higher static strength, fatigue strength, endurance, chemical resistance and/or corrosion resistance relative to that of the liner material.

An accumulator piston device having an accumulator piston which, on a circumference of a first shaft portion, has a first guide ring which surrounds the piston shaft and which protrudes radially over an externally dimensionally larger second shaft portion of the piston shaft.

A drop-in signal accumulator piston assembly to replace an original equipment (OE) signal accumulator piston in a vehicle transmission hydraulic circuit, the OE signal accumulator piston being positioned in a bore in a valve body having an open end and a fluid port. The drop-in signal accumulator piston assembly includes a sleeve having open first and second ends. The sleeve is configured to be positioned within the bore of the valve body with the first end closer than the second end to the fluid port. A piston is positioned in the sleeve and a spring biases the piston towards the fluid port. A plug is positioned in the bore closer to the second end of the sleeve than to the first end of the sleeve to thereby removably retain the sleeve, the piston, and the spring within the bore.