Class / Patent application number | Description | Number of patent applications / Date published |
417435000 | INCLUDING SEPARATE PORT ON NONCYCLIC VALVE FOR VENTING OR FILLING PUMP PORTION | 7 |
20080213110 | Apparatus and Method for Compressing a Cryogenic Media - An apparatus and method for compressing a cryogenic media is disclosed. A compressor includes a compressor chamber surrounded by a cylinder wall in which a compressor piston is moved in a linear manner, a suction valve and a pressure valve, which are arranged in the region of the lower end position of the compressor piston, and a liquid chamber which at least partially surrounds the compressor chamber. The cylinder wall defines at least one opening, which corresponds to the liquid chamber, and at least one opening, via which the gaseous medium can be extracted from the compressor chamber, where the openings are located at points on the cylinder wall that are passed by the compressor piston. | 09-04-2008 |
20080213111 | SYSTEM FOR RELEASING GAS INTO MOLTEN METAL - A device for releasing gas into molten metal includes a base having a discharge. The discharge has a first section including a first cross-sectional area and a second section including a second cross-sectional area, wherein the first section is upstream of the second section and the first cross-sectional area is smaller than the second cross-sectional area. A gas-release opening is positioned so that it can release gas into one or more of the first section or the second section. As the molten metal moves from the first cross-sectional area to the second cross-sectional area gas is released into the molten metal and the molten metal flow helps to draw the gas into the flow, thereby lowering the pressure required to release gas into the molten metal. Metal-transfer conduits other than a discharge incorporated in a pump base are also disclosed, as are pumps including either a discharge or other metal-transfer conduit according to the invention. | 09-04-2008 |
20110194959 | OIL PUMP WITH AIR VENT STRUCTURE - In an oil pump for an automatic transmission, a suction port is adapted to be connected to a first suction passage. The first suction passage is arranged in parallel with a second suction passage connected to an auxiliary pump. The first and second suction passages branch from an upstream suction passage leading to an oil strainer. A discharge outlet is adapted to be connected to a first discharge passage. An air vent hole is disposed downstream of the suction port and upstream of the discharge outlet. A communication passage is connected to the air vent hole and adapted to reach a predetermined oil level in an oil pan so as to communicate the air vent hole with inside of oil in the oil pan. | 08-11-2011 |
20130189135 | AIR PUMP STRUCTURE - An air pump structure includes a main body. The main body has a central air chamber. The main body has two side air chambers at two sides thereof. The two side air chambers communicate with the central air chamber through an air inlet unit. The two side air chambers each have a passage at a lower end thereof to communicate with an air outlet. A one-way valve plate is coupled to the air outlet. Two air pump members are to seal the two side air chambers. The air pump members cooperate with a link member and an electromagnetic member to pump air. The present invention has a simple configuration and lowers the cost and is convenient for assembly to enhance its quality and prevent air leakage. | 07-25-2013 |
20130287608 | Direct Volume-Controlling Device (DVCD) for Reciprocating Positive-Displacement Pumps - A volume control device having a housing with an inlet passage, an outlet passage, and an internal chamber communicating with the inlet and outlet passages. An accumulator is movably positioned within the internal chamber and substantially conforms with walls of the internal chamber, the accumulator including an internal passage allowing fluid flow therethrough. An one-way valve is positioned in the internal passage of the accumulator where the valve is biased in a closed position and an adjustable seat is positioned within the housing internal chamber between the accumulator and the housing outlet passage. A positioning mechanism engages the housing and adjustable seat whereby the position of the adjustable seat within the housing internal chamber may be adjustably fixed. | 10-31-2013 |
20150110654 | Displacement Pump with Forced Venting - The present invention relates to a displacement pump with a delivery chamber, which is connected to a pressure connection and a suction connection, a displacement element determining the volume of the delivery chamber, said displacement element being able to be moved back and forth between a first position, in which the delivery chamber has a smaller volume, and a second position, in which the delivery chamber has a larger volume, wherein the pressure connection is connected to the delivery chamber by a pressure valve and the suction connection is connected to the delivery chamber by a suction valve. In order to provide a displacement pump, which is easy and economical to produce and simultaneously reliably provides a degassing function, whereby downtimes can be reduced and the reliability of the delivery process can be increased, it is proposed according to the invention that, with the pressure valve closed, a backflow channel connects the delivery chamber and pressure connection, through which medium can enter the delivery chamber and/or gas can escape from the delivery chamber. | 04-23-2015 |
20150132165 | HIGH-PRESSURE PUMP - A high-pressure pump includes a pump body, a cylinder, a plunger, and a plug. The pump body has a fuel chamber therein into which fuel is supplied. The cylinder is disposed inside the pump body and having one end immediately adjacent to the fuel chamber. The cylinder has an inner threaded portion formed on an inner wall of the cylinder at the one end. The plunger is disposed inside the cylinder and is reciprocally movable in an axial direction to change a volume of a pressurizing chamber within which the fuel supplied from the fuel chamber is pressurized. The plug is screwed into the inner threaded portion of the cylinder from the fuel chamber in the axial direction and closing the one end of the cylinder. The plug has an end surface that faces an end surface of the plunger and defines the pressurizing chamber together with the end surface of the plunger. The end surface of the plug is parallel to the end surface of the plunger. | 05-14-2015 |