| Parker Hannifin GmbH Patent applications |
| Patent application number | Title | Published |
|---|
| 20110291034 | HYDRAULIC VALVE ASSEMBLY HAVING A CARTRIDGE INSERT VALVE EXHIBITING A CLOSING ELEMENT ARRANGED IN A PRESSURE EQUALIZED MANNER - The invention relates to a hydraulic valve assembly having a cartridge insert valve in a bore hole designed in a valve block and connected to the flow channels arranged in the valve block comprising a valve sleeve inserted in the bore hole and a closing member guided into said sleeve, wherein the valve sleeve forms a valve seat for the closing member in the closing position thereof and the closing member can be moved by means of a connected hydraulic pre-control between the closed position thereof seated on the valve seat and separating the flow channels from one another, and an opened position pushed into the valve sleeve, and the bore hole is sealed tight by the cartridge insert valve inserted the rein via a valve cover connected to the valve block. The closing member forms a sleeve-shaped closing element ( | 12-01-2011 |
| 20110186211 | END-FITTINGS FOR COMPOSITE TUBES, METHOD FOR JOINING FITTINGS TO THE ENDS OF COMPOSITE TUBES AND COMPSOSITE TUBES INCORPORATING END-FITTING - Composite tubes may be fabricated by filament winding a layer of resin impregnated carbon fibre with a near-axial fibre orientation over a mandrel and over end-fittings. Bands of resin-impregnated fibres are then wound circumferentially around this near-axial layer in a position that coincides with a circumferential groove in the underlying end-fittings. The ends of the near-axial layer are folded back over the bands, resulting in a double layer of intact near-axial fibres locked into the groove on the end-fittings by the bands of intact circumferential fibres. Testing has shown this arrangement to be effective for introducing very high axial loads onto the composite tube. | 08-04-2011 |
