| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 137614200 | Direct response normally closed valve limits direction of flow | 18 |
| 20080230131 | Irrigation system and shut-off control device therefor - An irrigation system having at least one water distribution member, a water supply source and a horizontally oriented, shut-off control device located in a fluid flow line between a water supply source and the at least one water distribution member for automatically shutting off the flow of supply water to the at least one water distribution member in response to a predetermined increase in force of fluid flow. The shut-off control device has a housing with an interior flow path having rails and projections dimensioned to support a compressible ball which moves within the housing and limits side-to-side motion or turbulence. | 09-25-2008 |
| 20090288722 | Double Check Back Flow Prevention Device - A double check valve is provided that includes an in-line inlet check valve and an outlet check valve that cooperate to prevent back flow of fluid through the valve. The check valve also includes at least one vent that allows for fluid trapped within the check valve to drain, thereby preventing freezing of the check valve and hydrant to which it is interconnected. The check valve provided omits many superfluous components and thus is smaller and easier to install than check valves of the prior art. | 11-26-2009 |
| 20100132821 | SELF-DRAINING FROST-FREE FAUCET - A valve assembly for a faucet includes a spout, a valve stem, a first valve, and a second valve. The first valve is rotatably coupled to the valve stem upstream from the spout and is selectively positionable to control a flow of fluid from a fluid source to the spout. The second valve is rotatably coupled to the valve stem for selectively draining fluid from the valve assembly. Further, the second valve is coupled to the first valve such that when the first and second valves are positioned in a first operational position, fluid flows from the source through the spout, and such that when the first and second valves are positioned in a second operational position, fluid is substantially prevented from flowing from the source through the spout and residual fluid within the faucet is gravity drained from the faucet. | 06-03-2010 |
| 20110048561 | Zero-pitch pipe - A pipe is provided through which a fluid can move without backflow in the absence of a gravity force provided by a downward pitch. This is accomplished by providing within the pipe a series of one-way valves, each having a structure similar to a mitral valve, with a rigid upper flap cooperating with a semi-rigid but flexible lower flap. Fluid pressure upstream of the valve will displace the lower flap enough to allow fluid to accumulate in a reservoir area downstream of the valve and upstream of a ramp structure. When sufficient fluid accumulates in the reservoir area, it overflows the ramp structure and proceeds to the next one-way valve, and the process is repeated. | 03-03-2011 |
| 20130008537 | VALVE APPARATUS WITH POSITIVE AND NEGATIVE PRESSURE RELIEF VALVES - A valve apparatus includes a valve housing, an electric valve, a positive pressure relief valve and a negative pressure relief valve. The valve housing defines therein a valve inside space divided by a partition plate into two spaces communicating with the first port portion and the second port portion respectively. The partition plate has an electric valve opening, a positive pressure relief opening and a negative pressure relief opening separately from each other. When the positive pressure relief valve opens the positive pressure relief opening, a fluid flows only from the first port portion to the second port portion. When the negative pressure relief valve opens the negative pressure relief opening, the fluid flows only from the second port portion to the first port portion. | 01-10-2013 |
| 20130056103 | VALVE ARRAY - A valve array includes a reservoir containing a pressurized fluid, a non-return valve and a seat valve that is actuatable so as to allow the fluid to flow out of the reservoir. The seat valve is configured as a pilot control valve connected to the reservoir such that, in an open condition of the seat valve, a smaller amount of the fluid flows out of the reservoir via the seat valve and a larger amount of the fluid flows out of the reservoir via the non-return valve. | 03-07-2013 |
| 20140034165 | THREE-POSITION VALVE FOR WATER SUPPLY SYSTEMS - The present invention relates to three-position faucet for water supply systems, formed by a body ( | 02-06-2014 |
| 20140048160 | Rinse Valve for Vacuum Waste System - The apparatus and method of the invention provides for a rinse valve for controlling the flow of rinse fluid to a vacuum waste receptacle. The rinse valve comprises a primary rinse fluid flow path and a poppet assembly intersecting the primary rinse fluid flow path. The rinse valve also comprises a solenoid-driven fluid control device having a solenoid armature movable between an inactive state in which the armature engages the poppet assembly to block flow of the rinse fluid through a poppet channel and an active state in which the solenoid armature is disengaged from the poppet assembly to allow flow of the rinse fluid through the poppet channel to raise the poppet assembly, permitting the flow of the rinse fluid through the primary rinse fluid flow path and out of the valve, the armature being located at all times out of the primary flow path of the rinse fluid. | 02-20-2014 |
| 20140182721 | PRESSURE BALANCED COUPLER - Provided is a pressure balanced coupler including male and female couplers configured to be coupled together, the male coupler having a stab removably coupled to a plug in the female coupler to move the plug from a closed position preventing fluid flow to a port in the female coupler and an open position allowing flow. In this way, a pressure balanced coupler for use with high pressure fluids in high pressure environments may be provided that does not have a net load acting to separate the male and female couplers. | 07-03-2014 |
| 20140251474 | COMBINATION FLOW CONTROL VALVE AND REVERSE FLOW CHECK VALVE - A combination flow control and reverse flow check valve controls the flow of fluid in a desired downstream direction and limits undesired backflow of liquid in an upstream direction into a fluid source such as a reservoir. The flow control and reverse flow check valve may include a housing having a fluid conveying channel with an upstream end configured for mounting to the liquid source and a downstream end for discharging fluids, a flow control valve positioned between the ends, and a check element positioned in the channel between the flow control valve and the downstream end. The check element is advantageously positioned between the flow control valve and the downstream end of the housing to prevent possible contaminants in a backflow liquid from reaching the flow control valve. | 09-11-2014 |
| 20150013799 | COMPONENT ATTACHING STRUCTURE AND PRESSURE REGULATOR - A component attaching structure for attaching a first component and a second component to each other. The first component has an attachment hole and an internal thread formed therein. The second component has an external thread formed thereon. The second component supports a sealing member, which seals an interface between an outer circumferential surface of the second component and an inner circumferential surface of the attaching hole at a position closer to a tip end of the second component than the external thread. If the direction in which the second component moves relative to the first component when the second component is attached to the first component is defined as an attaching direction, a distance between the external thread and the sealing member in the attaching direction is greater than the length of the internal thread in the attaching direction. | 01-15-2015 |
| 20150013800 | FLUID VALVE FOR A VEHICLE TRANSMISSION - A fluid valve, in particular a pressure control valve in a vehicle transmission, has at least one inlet opening and a first and a second outlet opening, which are connected to each other through two part valves that are mechanically coupled to each other. Whereas, by means of the first part valve, a fluid intake is adjustable from the inlet opening to the first and second outlet opening, and, by means of the second part valve, a fluid discharge is adjustable between the first and second outlet opening. At least the second part valve is designed as a poppet valve, with a cone-shaped closing element that features several taper areas, which have varying taper angles. | 01-15-2015 |
| 20150013801 | PRESSURE CONTROL VALVE - The invention relates to a pressure control valve, composed of a valve component and a drive component for the control element of the valve component; the valve component has an orifice that is closed by the control element in a first position, thus disconnecting a control chamber from a return chamber and during operation, a control pressure prevails in the control chamber that is greater than or equal to the return pressure in the return chamber, and in the first position, the control pressure acts on a first control surface of the control element and in a second, controlled position, the orifice is partially opened so that the control chamber and the return chamber are fluidically connected to each other and the control pressure prevailing in the control chamber in the second position acts on a second control surface of the control element and the second control surface is larger than the first control surface. | 01-15-2015 |
| 20150013802 | PRESSURE CONTROL VALVE WITH CONTROL ELEMENT - The invention relates to a pressure control valve, composed of at least a valve component; situated between a control chamber and a return chamber, the valve component has an orifice, which a control element can close, partially close, or open, and the control element has at least one, at least truncated cone-like first control element region with a truncated cone angle and the orifice is formed by a through opening, which extends through the orifice element and at its end oriented toward the control element, has at least one cone-like, in particular first, orifice region with a cone angle; and the cone angle is greater than the truncated cone angle. | 01-15-2015 |
| 20150027571 | FLUID CONTROL VALVE DEVICE - A first hole is connected through a first fluid chamber to an inflow hole. A first valve seat is formed around the first hole. A second fluid chamber is connected through a second hole to the first hole. An outflow hole is connected to the second fluid chamber. A second valve seat is formed around the second hole. A third valve seat is formed around the outflow hole. A first valve element is movable in the first fluid chamber to make contact with the first valve seat. A second valve element is movable in the second fluid chamber to make contact with the second valve seat or the third valve seat. A biasing member biases the second valve element toward the second valve seat. An outer peripheral passage is formed between an outer periphery of the second valve element and the second housing to enable flow therethrough. | 01-29-2015 |
| 20150107708 | COMBINATION FLOW CONTROL VALVE AND REVERSE FLOW CHECK VALVE - A combination flow control and reverse flow check valve controls the flow of fluid in a desired downstream direction and limits undesired backflow of liquid in an upstream direction into a fluid source such as a reservoir. The flow control and reverse flow check valve may include a housing having a fluid conveying channel with an upstream end configured for mounting to the liquid source and a downstream end for discharging fluids, a flow control valve positioned between the ends, and a check element positioned in the channel between the flow control valve and the downstream end. The check element is advantageously positioned between the flow control valve and the downstream end of the housing to prevent possible contaminants in a backflow liquid from reaching the flow control valve. | 04-23-2015 |
| 20150129066 | CONTROL VALVE FOR A CAMSHAFT ADJUSTER - A control valve ( | 05-14-2015 |
| 20160060853 | Water Faucet Control Valve System - A water faucet control valve system for providing increased safety through the prevention of hot water scalding and a higher level of user access and convenience. The water faucet control valve system generally includes a housing having an upper end that is adapted to fluidly connect to a spout of a water faucet, a secondary valve positioned within the housing to control the flow of water through the housing, an engaging member connected to the secondary valve for allowing manual manipulation of the secondary valve and a resilient covering that extends from the lower end of the housing. | 03-03-2016 |
