| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137505110 | With relief valve | 15 |
| 20080202603 | Pressure Reducer - A pressure reducer includes a piston slidably accommodated in a cylinder to define a decompression chamber and a pressure adjusting chamber. A seal member includes an elastic member and a sliding portion. The sliding portion is pressed by the elastic member such that the sliding portion slides on an inner circumferential surface of the cylinder. An annular member is located on an outer circumferential surface of the piston and between the seal member and the pressure adjusting surface. The annular member is pressed against the inner circumferential surface of the cylinder with a force that is less than a force with which the sliding portion is pressed against the inner circumferential surface of the cylinder. Thus, the pressure reducer prevents the piston from being moved by an excessive amount with highly accurately adjusting pressure. | 08-28-2008 |
| 20080257424 | Flow Valve Port for a Gas Regulator - A fluid regulating device comprises a valve body carrying a valve port that defines an elongated orifice that converges from an inlet portion to an outlet portion. The converging orifice minimizes the effects of boundary layer separation and advantageously maximizes the flow capacity of the valve port. The elongated orifice can be defined by a one-piece body, which is threaded into the valve body, or by a cartridge slidably disposed in a housing, which is threaded into the valve body. The fluid regulating device further comprises a diaphragm-based actuator including a control element movably disposed within the valve body for controlling the flow of fluid therethrough. | 10-23-2008 |
| 20090272443 | Portable device for supplying compressed CO2 from a pressure vessel to a pneumatic tool - A device includes a pressure regulator comprising a body including a control chamber adapted to connect to a portable pressure vessel filled with compressed CO | 11-05-2009 |
| 20100200084 | PRESSURE CONTROL SYSTEM AND PRESSURE REGULATING VALVE THEREOF - A pressure control system in provided, including a pressure regulating valve, a throttle valve and a relief valve. The pressure regulating valve includes a valve body and a piston assembly. The valve body has a chamber, wherein the chamber has an inlet and an outlet. The piston assembly, movably disposed in the chamber, includes a first piston and a second piston. The first piston corresponds to the inlet and has a first contact surface. The second piston corresponds to the outlet and has a second contact surface. The first piston and the second piston move simultaneously, and the first contact surface is smaller than the second contact surface. The throttle valve, connected with the pressure regulating valve, is disposed at a side of the outlet of the valve body. The relief valve, connected with the pressure regulating valve, is disposed at a side of the inlet of the valve body. | 08-12-2010 |
| 20100206401 | MULTI-STAGE FLUID REGULATORS - Multi-stage fluid regulators are described. An example fluid regulator includes a regulator body having an inlet in fluid communication with a source of pressurized fluid. A first fluid valve is disposed within the regulator body and coupled to the inlet to regulate a pressure of the pressurized fluid at the inlet. A second fluid valve is disposed within the regulator body and coupled to the inlet and, via a passageway, to the first fluid valve. The second fluid valve is to cause a fluid pressure in the passageway to be regulated to a predetermined portion of the pressure of the pressurized fluid at the inlet. | 08-19-2010 |
| 20110180162 | Low Profile Buoyancy Adjustment Controller and Valve System for Diver's Vest - A buoyancy adjustment device utilizes an inflation valve connected between the diver's breathing gas supply and a compartment to admit gas into the compartment to increase the diver's buoyancy. An exhaust valve connects between the compartment and the outside of the vest, to release gas from the compartment to the surrounding environment to decrease the diver's buoyancy. A hand-operated controller connected to the inflation valve, when caused to move from a neutral position to an inflation position, actuates the inflation valve and admits gas to the compartment. The hand-operated controller is also connected to the exhaust valve via a flexible pushrod so that, when caused to move from the neutral position to an exhaust position, actuates the exhaust valve and releases gas from the compartment. The flexible push rod is housed in a sleeve that is totally contained within the compartment. Both the inflation valve and the exhaust valve are mounted substantially within the compartment, below the outer wall of the diver's vest and their respective working parts leave only a low profile raised above the outside surface of the vest. A cloth sleeve is positioned inside the front portion of the vest to conveniently store a spare breathing regulator. | 07-28-2011 |
| 20130255800 | OXYGEN ALARM SYSTEM - The present invention is a metal oxygen alarm system that indicates to a user when an oxygen tank is at a predetermined low level that includes an alarm valve that emits a whistle sound that is audible in an ordinary decibel level environment activated when the oxygen tank is at the predetermined low oxygen pressure level and a portable oxygen regulator that has a top inlet and a bottom inlet and is attached to the oxygen tank and regulates an amount of oxygen provided to the user. | 10-03-2013 |
| 20140020772 | LOW NOISE RELIEF VALVE - A relief valve includes a valve body having an inlet and an outlet; a passageway formed between the inlet and the outlet in the valve body; a valve tube positioned in the passageway having a generally cylindrical portion including a first outside diameter and a second generally cylindrical portion including a first inside diameter that is larger than the first outside diameter; a valve seat; and a spring positioned about at least a portion of the valve tube and biasing the valve tube away from the valve inlet to seal against the valve seat. The valve tube and valve seat prevent flow through the passageway when pressure at the inlet is below a predetermined pressure and wherein the valve tube moves axially away from the valve seat at the predetermined pressure allowing flow through the passageway from the inlet to the outlet. | 01-23-2014 |
| 20140034156 | GAS FILLING AND DISPENSING DEVICE, VESSEL WITH SUCH DEVICE, AND OPERATIONAL CIRCUIT - The invention relates to a gas filling and dispensing device that comprises a body to be positioned in the opening of a pressurized gas storage tank, a gas-tapping circuit extending between a first upstream end to be connected to the inside of the tank and a second downstream end to be connected to a gas user, wherein the tapping circuit includes a first insulation valve, the device further including a safety valve subjected to the tank pressure for blocking or selectively opening a passage for the gas from the tank towards a discharge area based on the temperature and/or pressure of the gas in the tank relative to at least one predetermined threshold, characterized in that the discharge area of the safety valve is located upstream from the first insulation valve. | 02-06-2014 |
| 20140069529 | RELIEF VALVE - A relief valve configured such that a plunger configured to be pushed forward by an elastic member to block communication between an inflow opening and an outflow opening moves rearward by an increase in pressure of the inflow opening against an elastic force of the elastic member to cause the inflow opening and the outflow opening to communicate with each other; and a piston configured to push a rear end of the elastic member forward moves forward by the increase in the pressure of the inflow opening to compress the elastic member, the elastic member includes a first elastic member and a second elastic member arranged in series, and the second elastic member has a smaller elastic constant than the first elastic member. | 03-13-2014 |
| 20140116539 | RELIEF VALVE FOR OVERLOAD PROTECTION - A relief valve for overload protection includes a switching member disposed at the inlet, and a guide pillar in sealed connection with the switching member. The guide pillar is provided with a first water outlet and a second water outlet disposed in the direction of water flowing, and a slidable sleeve is disposed on an outer side of said guide pillar. When the water pipe connected to the outlet cracks, the water pressure at said outlet may drop, which leads to further movement of said slidable sleeve towards the outlet and cause the plug disposed on the top of said slidable sleeve to plug the outlet in a sealed manner, thus closing the outlet. | 05-01-2014 |
| 20140182714 | DUAL RELIEF VALVE OF BSM FOR VEHICLE ENGINE - A dual relief valve apparatus of a Balance Shaft and Oil Pump Module (BSM) of a vehicle engine may include the pump housing, and a primary relief valve and a secondary relief valve mounted inside the pump housing, wherein the primary relief valve and the secondary relief valve may be sequentially opened or closed, wherein the primary relief valve may be first opened to release a first oil by a first oil discharge pressure applied thereto and sequentially the secondary relief valve may be opened to release a second oil by a second oil discharge pressure applied thereto, the first oil discharge pressure being relatively smaller than the second oil discharge pressure. | 07-03-2014 |
| 20140238508 | PRESSURE REDUCING VALVE, TAP AND BOTTLE PROVIDED WITH SUCH A PRESSURE REDUCING VALVE - Pressure reducing valve for compressed gas, comprising a body ( | 08-28-2014 |
| 20140318642 | SAFETY DEVICE FOR INSTALLATION IN A GAS-SUPPLY SYSTEM, IN PARTICULAR, AN ACETYLENE-SUPPLY SYSTEM - Relevant specifications in the field of gas supply provide for different safety devices for installation in a gas-supply system, in particular, an acetylene-supply system. To provide such a safety device, which is characterized by a compact structure and a high level of operational reliability, this invention proposes that a valve body ( | 10-30-2014 |
| 20150355645 | Pressure Build-up Valve - A pressure build-up valve is disclosed which has heightened sensitivity and reduced overall valve size and is adapted to minimize pressure fall-off and to be mounted to a pressurized vessel storing a gas or a liquid. The value is particularly, although not exclusively, designed to build and maintain pressure in cryogenic transportation trailer and storage tanks and is primarily for use with a closed loop liquefied natural gas fluid control system. | 12-10-2015 |
