NEO MECHANICS LIMITED Patent applications |
Patent application number | Title | Published |
20130300069 | METAL COIL PROPELLER SHAFT SEAL FOR DEEP DIVE VESSEL - A propeller shaft seal for sealing a propeller shaft in a stern tube, comprising a bi-direction rotational sealing body being fitted within the stern tube and wrapped around the propeller shaft in its axial direction; wherein the bi-direction rotational sealing body comprising two metallic helical coils stacking together in a way that is mirroring each other; wherein the first and second metallic helical coils being constructed from helically coiled metal tapes of varying widths linked together and coiled into rings and with the rings tightly bounded; and wherein at any one time during operation, a rotational direction of the propeller shaft is same as coiling direction of one of the two metallic helical coils but opposite to that of the other of the two metallic helical coils. | 11-14-2013 |
20130017107 | DIESEL ENGINE FUEL INJECTION PUMP WHICH PISTONS ARE SEALED WITH ALL METAL SEAL RINGS - An injection fuel pump, comprising: a pump body; a drive shaft assembled into the pump body; a piston-drive cam assembled on to the drive shaft; and one or more cylinder heads, each comprising: a pump piston inserted in a cylinder bore, wherein the pump piston is fitted with one or more all-metal-seal rings; wherein the pump piston that is fitted with one or more all-metal-seal rings having a cross-sectional area that is the same as the cylinder bore cross-sectional area, as such creating zero internal leakage. In one embodiment, the all-metal-seal rings are coiled felt seals. | 01-17-2013 |
20130014845 | SPOOL TYPE HYDRAULIC CONTROL VALVE WHICH SPOOL IS SEALED WITH ALL METAL SEAL RING - A spool type control valve, comprising: a valve block having a cylinder bore with drilled holes on the cylinder bore internal wall; a valve spool inserted in the cylinder bore; wherein the valve spool having separation sleeves each being spaced apart on the valve spool; wherein an all-metal-seal ring is assembled and fitted on each of the separation sleeves; and wherein each of the all-metal-seal rings is constructed with three different functioning ring layers: a cylinder seal layer, an absorption layer, and a shaft seal layer; wherein the cylinder seal layer seals the cylinder bore internal wall and does come into contact with the valve spool surface; wherein the absorption layer absorbs any dimensional variations during dynamic movement of the valve spool; and shaft seal layer seals the valve spool and does not come into contact with the cylinder bore internal wall. | 01-17-2013 |