| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 417434000 | INCLUDING SEPARATE PORT ON NONCYCLIC VALVE FOR DRAINING PUMP PORTION | 7 |
| 20140086768 | Drain Vent for Petroleum/Chemical Pumping Devices and Methods of Making the Same - A fluid pumping device for use in the petroleum and/or chemical industries includes a cast fluid housing having an inlet to or an outlet from the fluid pumping device, a drain/vent tubular connection extending through the cast fluid housing to communicate with the inlet to or the outlet of the fluid pumping device and a flange adapter sealingly secured to the cast fluid housing. A method of providing a drain/vent tube to structurally communicate with an inlet to or the outlet from a fluid pumping device is disclosed. | 03-27-2014 |
| 20140294632 | VARIABLE DISPLACEMENT COMPRESSOR - A variable displacement compressor includes a swash plate, a housing and a displacement control valve. The housing has a crank chamber where the swash plate is disposed, a discharge chamber and a suction chamber. The housing has plural bolt holes and is formed by separate members fastened together by plural bolts inserted through the bolt holes. The displacement control valve has a first valve member movable to connect the crank chamber and the discharge chamber, controlling the position of the first valve member to vary compressor displacement. The displacement control valve has a valve chamber and a second valve member serving to connect the crank chamber and the suction chamber in the valve chamber. The valve chamber is connected to the crank chamber by a drain passage part of which serves as the bolt hole located at the lowest of the plural bolt holes when the compressor is installed. | 10-02-2014 |
| 20140301873 | CONDENSATE SEPARATOR DEVICE FOR A COMPRESSOR ARRANGEMENT FOR THE PRODUCTION OF COMPRESSED AIR - A condensate separator device for a compressor arrangement for the production of compressed air having a separator housing that has a compressor-side inlet connection and an outlet connection for discharging the dehydrated compressed air. A base-side drainage valve is provided for releasing the condensate, which has collected in the separator housing, into the surrounding environment via a release opening. The valve is pneumatically-piloted seat valve able to be controlled by an electro-pneumatic control valve, and this electro-pneumatic control valve of the drainage valve is arranged outside the separator housing and connected to a pilot connection of the drainage valve via a control pressure-line. | 10-09-2014 |
| 20150017035 | PUMP HEAD FOR A FUEL PUMP - A pump head for a high-pressure fuel pump is disclosed. The pump head comprises a head housing including a body portion, and a turret portion extending from the body portion, a pumping chamber defined within the body portion, a pumping element bore for receiving a pumping element in use, the pumping element bore extending from the pumping chamber and through the turret portion, and a leakage return passage. The pump head further comprises a sleeve arranged around the turret portion to define a leakage flow path to allow fuel flow from the pumping element bore to the leakage return passage. The pump head is suitable for use in a fuel pump of the type in which a cam drive arrangement of the pump is lubricated by engine oil, since contamination of the engine oil with fuel can be minimised. | 01-15-2015 |
| 20150377231 | PUMP FOR REMOVING LIQUIDS FROM VESSELS UNDER VACUUM - A pump moves fluid by means of a piston reciprocating inside a cylinder. Fluid enters the cylinder through an inlet valve that passes through the cylinder head, and has an enlarged surface inside the cylinder, which seals against the cylinder head. This valve is normally held closed by a spring. As the piston advances, fluid is forced out of the cylinder through a passage in the cylinder head and a check valve. A rod is affixed to the piston and passes through the inlet valve. As the piston retracts, the rod slides through the inlet valve, until a stop, affixed to the rod, encounters the stem of the inlet valve. The spring holding the valve closed is overcome and the valve opens as the piston and rod move farther, until the piston is in its fully retracted position. Fluid enters the cylinder until the piston again begins to advance. The stop ceases to push the inlet valve open, and the spring again holds it closed. | 12-31-2015 |
| 20160138584 | RECIPROCATING COMPRESSOR, PRESSURE PACKING, AND METHOD - A pressure packing for a piston rod of a reciprocating compressor includes a case having a piston rod through bore. A compartment within the case is coincident with the through bore and the compartment has an axial length at least as long as a stroke of the piston rod. | 05-19-2016 |
| 20160138586 | FUEL PUMP - A fuel pump is disclosed wherein a substantially cylindrical plunger bore is provided with an annular drain groove fluidically coupled to a drain duct. A pump plunger is driven by a drive system located in a separate mechanical compartment that holds a reservoir of lubricating oil. An annular seal is provided adjacent the drain groove substantially at the end of the bore and retained in position by a seal support. Exemplary embodiments provide the drain groove and seal as being positioned immediately adjacent one another so that the seal forms a lower wall of the drain groove. | 05-19-2016 |
