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| Number | Title | Issue Date |
| 7891373 | Flow control valve Systems and apparatus for controlling the flow of fluid into a tank, such as a fuel tank on heavy equipment. An inlet valve includes a head portion for making connection with a nozzle, a receiver attached thereto and a piston which closes against a face in the head ... | 02/22/2011 |
| 7814930 | Refill control mechanism for a liquid holding tank A liquid refill control for a holding tank includes a pneumatic solenoid valve for delivering liquid to the tank in an open state and restricting delivery of the liquid to the tank in a closed state. The solenoid valve has a pneumatic exhaust. A container mounted in... | 10/19/2010 |
| 7584766 | Overfill prevention valve for shallow tanks An overfill prevention valve for mounting on the filling inlet of a liquid storage tank has an elongated, tubular valve body provided with an inlet at one end and one or more outlets in the sidewall thereof. A pressure-actuated piston is moveable between an open pos... | 09/08/2009 |
| 7392822 | Liquid level controller and pilot switch A liquid level controller including a pilot valve switchable between snap and throttle modes. A displacer translates changing liquid level in a tank into movement that is transferred to the pilot valve which will provide output gas to a control valve to allow or to ... | 07/01/2008 |
| 7356856 | Toilet overflow prevention device A toilet overflow prevention device including an overflow valve assembly, a control valve and a water level sensor. The overflow valve assembly is configured to selectively permit a flow of water through the valve assembly from the tank to the bowl of an associated ... | 04/15/2008 |
| 7352287 | Pneumatic controller A pneumatic controller for controlling a device. ... | 04/01/2008 |
| 7284567 | Liquid level controller A liquid level controller for maintaining the level of liquid in a tank at a predetermined height includes a housing with an upper and lower section wherein the upper section is connected to a liquid supply and the lower section is submerged in liquid the level of w... | 10/23/2007 |
| 7243675 | Drop tube segments adapted for use with a liquid reservoir A drop tube segment is adapted for use with a liquid reservoir. The drop tube segment includes a conduit with an end portion and a sidewall including a sidewall portion at least partially defining an interior housing area. The drop tube segment further includes a va... | 07/17/2007 |
| 7240690 | Valve assembly with overfill protection device and capacitive liquid level gauge A valve assembly, such as a tap for a liquefied gas cylinder, includes an overfill protection device and a liquid level gauge having an electrode assembly comprising a pair of lamellar electrodes mounted closely adjacent a housing member of the overfill protection d... | 07/10/2007 |
| 7219686 | Tap assembly for a liquid vessel having an overfill protection device and a float controlled magnetic level gauge This invention relates to a tap assembly for a liquid vessel, having an overfill protection device and a float controlled mechanical or magnetic level gauge. A single float actuates a stem of the overfill protection device as well as a rod of the level gauge. The ro... | 05/22/2007 |
| 7075425 | Apparatus and method for monitoring sewer system operation Disclosed are methods and apparatus for monitoring a plurality of grinder pumps, and in particular, remotely over a communications network. Aspects of the invention include an alarm panel having a modular configuration, a modem board which allows use of a single tel... | 07/11/2006 |
| 7057369 | System and device for regulating the position of a drivable component and drive therefor A system for detecting the position of a component drivable by a control element drive, the system comprising: a position sensor housed in a position regulator housing, a movable motion representative to be driven by an actuating motion of the component, via which m... | 06/06/2006 |
| 7028727 | Easy use valved fluid container assembly and valve system for same The valved container assembly comprises a container having a combined inlet/outlet incorporating an inlet valve, an outlet tube positionable over the inlet, the outlet tube incorporating an inline flow control valve and an end valve which stops flow through the tube... | 04/18/2006 |
| 6935844 | Gas pressure driven fluid pump having magnetic valve control mechanism and method A gas pressure driven fluid pump comprising a pump tank having a liquid inlet and a liquid outlet. A float, carried within the interior of the pump tank, is operable to move between a low level position and a high level position. A snap-acting valve control mechanis... | 08/30/2005 |
| 6910499 | Valve assembly for pressurized fluid vessel A valve assembly for a pressurized fluid vessel such as a propane tank has a housing defining a main fluid passageway therebetween with a valve seat (734) defined in the main passageway, a main valve member (742) movable against the valve seat (734 | 06/28/2005 |
| 6901951 | Valve A valve (19) primarily designed as a float valve to control the flow of water under pressure into a cistern has an upstream chamber (22) and a downstream chamber (23). The upstream chamber (22) communicates an inlet (21) for mains ... | 06/07/2005 |
| 6729367 | Overflow prevention system and method using laminar-to-turbulent flow transition An overflow prevention system and method for storage tanks includes a flow disturber situated in the tank fill tube, a fluid level sensor for sensing fluid level in the tank, and an actuator that causes the flow disturber to move toward the fill tube inlet in respon... | 05/04/2004 |
| 6640829 | Valve for a tap of a compressed or liquified gas cylinder, and tap provided with such a valve A two-way valve is disclosed comprising at least two lateral openings which can be shut off by a piston provided with an axial orifice for the passage of gas, which piston slides axially in the casing between a position in which the openings are shut off ... | 11/04/2003 |
| 6615863 | Toilet fill valve tank isolation A toilet fill valve (16) includes a fill tube (21) which is mounted through a hole (14) in a toilet tank wall (12), having isolating means for isolating the fill tube (21) from direct contact with the toilet tank wall (12), as well as isolating water-born... | 09/09/2003 |
| 6595236 | Valve A valve comprising a body having an inlet (13, 113, 213) adapted to be connected to a pressurized source of liquid and an outlet (15, 115, 215) which is to communicate with a reservoir, a valve seat (25, 125, 225) between the inlet and outlet, a valve mem... | 07/22/2003 |
| 6539973 | Water pressure-assisted flush valve A flush valve assembly includes a resilient pinch tube disposed in a conduit between a pressurized water source and a toilet flush tank and is pinched closed by a piston disposed in a cylinder formed in a bracket mounted on the conduit. The piston is enga... | 04/01/2003 |
| 6513541 | Vent valve A pipeline vent valve comprising a body (13) defining a chamber (A) having an inlet (17) towards its lower end which is adapted to be connected to a pipeline and an outlet (21) towards its upper end, the outlet defined by a valve seat, a first valve membe... | 02/04/2003 |
| 6497246 | Pneumatic snap pilot A snap pilot used to pneumatically energize and de-energize a control device, such as a valve. The pilot has two valves--one to admit pilot pressure, and one to exhaust pressure. The pilot incorporates valves having an elastomeric seal but maintaining the... | 12/24/2002 |
| 6354323 | Liquid level controller An improved liquid level controller is shown having a pneumatic pilot assembly located outside the main controller housing. A filter housing is also located outside the main housing. The controller internal components include a torque bar acted upon by a ... | 03/12/2002 |
| 6311723 | Flow control valve assembly A fluid flow control valve (10) has a piston (43) in a first chamber (45), urged by a spring (46) to close fluid passages (36) interconnecting the first chamber (45) to a second chamber (51). A fluid level sensor (20) in a container (100) allows fluid to ... | 11/06/2001 |
| 6263905 | Automatic regulating valve apparatus An automatic regulating valve apparatus comprises a main valve unit, and a pilot valve unit operatively connected to the main valve unit to control the main valve unit. The main valve unit comprises a main valve casing, a main valve element disposed in th... | 07/24/2001 |
| 6247492 | Overfill protection for fuel tanks A fuel storage tank is disclosed which is fitted with an overfill protection device for automatically shutting off flow of fuel into the tank when the fuel reaches an intended maximum fill level. The overfill protection device comprises a fill valve locat... | 06/19/2001 |
| 6244829 | Liquid forced-feed apparatus A liquid forced-feed apparatus has a built-in float in a hermetic vessel provided with a working fluid inlet port, a working fluid discharge port, a forced-feed liquid inlet port, and a forced-feed liquid discharge port. A snap mechanism which is actuated... | 06/12/2001 |
| 6230730 | Container having collapsible inline fluid-weight control device A device, and a container having such a device, is provided for filling the container with a predetermined weight of fluid. The device includes an input portion with a throat and a shoulder for introducing fluid into the container. A shut-off mechanism ha... | 05/15/2001 |
| 6202676 | Magnetic liquid control for boiler feedwater receivers A liquid level control unit having a permanent magnet mechanism for translating displacements of a displaces element in the liquid of a container to an actuator device that actuates a control system for a regulated device such as a supply water control va... | 03/20/2001 |
| 6178994 | Tap for compressed or liquefied gases having an overcharging prevention function There is disclosed a tap for compressed or liquefied gases having an overcharging prevention function, in which a gas can be directly infused/discharged into/from a gas storage tank, regardless of pressure/level of the liquefied gas inside/outside a gas s... | 01/30/2001 |
| 6155791 | Wet/dry glycol pump automatic shut-down system An automatic shut-down system for wet/dry glycol pump thereby providing a pump protection system located in the fluid circuit between the reboiler and glycol contactor elements of a gas dehydration system. The system includes a filter or filter system, if... | 12/05/2000 |
| 6138709 | Overfill protection device A overfill protection device includes a first tubular member, a cylindrical piston slidably fitted within the first tubular member, a spring arranged within the first tubular member and fitted over an intermediate portion of the piston, a first and second... | 10/31/2000 |
| 6076547 | Device for operating a mechanism of a rinsing fixture The invention concerns a device for operating a mechanism (5) of a rinsing fixture, in particular for operating a closing and opening mechanism or a locking mechanism of a rinsing fixture. It shows a float (28) and a first hydraulic or pneumatic force mea... | 06/20/2000 |
| 6035888 | Fill valve A fill valve for controlling the filling of a fluid reservoir such as a cistern. The valve minimizes the time needed to fill the reservoir by maintaining maximum fluid flow through the valve until instantaneous shut off of the fill valve once the reservoi... | 03/14/2000 |
| 5992448 | Liquid level controller A liquid level controller is shown having a housing with a rear wall. A shaft has a first end which extends through the rear wall to a liquid displacement member located within a liquid containing vessel. A second end of the shaft joins a pair of opposite... | 11/30/1999 |
| 5983919 | Automatic drain valve An automatic drain valve for discharging accumulations of fluids and foreign materials from a fluid handling system. The drain valve (10) comprises a reservoir (14) defining a reservoir volume (15) and a thru-port (28), in fluid communication with the res... | 11/16/1999 |
| 5920920 | Straight trap toilet apparatus A straight trap toilet apparatus mainly comprises a main body with a straight trap, a piston, and a toilet bowl. The water outlet of the main body is connected to a waste pipe, and the top of the main body is mounted below the toilet bowl. The main body h... | 07/13/1999 |
| 5887609 | Container having fluid-weight control device A device, and a container having such a device, is provided for permitting filling the container with a predetermined weight of the fluid. The device and container include a main channel to introduce the fluid into the container at a fill pressure; a dete... | 03/30/1999 |
| 5850849 | Storage tank shutoff valve with double cam assembly An valve assembly for automatically shutting off the flow of a pressurized liquid to a storage tank includes a cam that is rotated in response to the level of a liquid in the storage tank. A follower moves a poppet valve axially with a housing as a nonlin... | 12/22/1998 |
