Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 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 |
| 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 |
| 6588449 | Diesel fuel shut-off device Fuel shut-off device for use in a diesel fuel tank to discontinue fuel flow to a fuel pump comprises a valve seat forming a fuel flow opening for fuel to flow from the fuel tank to the fuel pump, a fuel control valve cooperably disposed relative to the va... | 07/08/2003 |
| 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 |
| 6178985 | Automatic drain system An automatic drain system for removal of condensate from compressed air systems comprises a reservoir having an inlet for entry of condensate and outlet for the periodic discharge of accumulated condensate. The discharge, through a ball valve in the outle... | 01/30/2001 |
| 6079438 | Valve device for controlling the filling level of cylinders and the like with liquefied gases A valve device for controlling the filling level of cylinders and the like ith liquefied gases, comprising an upper connecting body which can be coupled to a cylinder for liquefied gas and forming a tubular gas infeed element which ends with a coupling bod... | 06/27/2000 |
| 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 |
| 5842500 | Overfill preventing valve An overfill preventing valve (20) is adapted to be operatively interposed in a flow path between a fluid source (21) and a compressed fluid storage cylinder (22) to prevent the cylinder from being overly filled. The improved valve includes an elongated tu... | 12/01/1998 |
| 5832953 | Overfill shut-off system for liquid storage tanks An improved overfill shut-off system for a liquid storage tank includes a passage having an inlet end and an outlet end, a valve seat in the passage, a plunger that is movable within the passage for the purpose of engaging the valve seat to impede flow of... | 11/10/1998 |
| 5813432 | Automatic shut-off valve arrangement This invention relates to an automatic shut-off valve arrangement for use in fluid transfer systems. In particular, the valve arrangement or assembly may be mounted in a fluid tank or other type of fluid containment zone to automatically shut off flow fro... | 09/29/1998 |
| 5121767 | Automatic drain valve A drain valve including a housing engaged on a base, compressed air may flow into the housing via an inlet of the base, a casing disposed in the upper portion of the housing, a piston slidably engaged in the casing, a rod extended downward from the piston... | 06/16/1992 |
| 5103855 | Automatic condensate draining device for compressed air systems An automatic condensate draining device includes a housing which confines a condensate collecting chamber and having a base provided with a condensate discharge opening, and a condensate inlet opening in communication with the condensate collecting chambe... | 04/14/1992 |
| 4703784 | Dual operation tank filling fitting with automatic shut-off A self-contained tank filling fitting having dual operation wherein the fitting may be used with a gravity fluid supply system or a pressurized fluid supply system. The fitting includes an elbow having an upper end closed by a removable cap, and a pressur... | 11/03/1987 |
| 4488571 | Flow-control system with pressure-responsive valve A flow-regulating valve, with a body forming a flow channel between an entrance port and an exit port, has a shutter in the form of an apertured backing plate and an apertured slide which adjoin each other along a plane inclined or parallel to the axis of... | 12/18/1984 |
| 4458714 | Flow regulating device A device for the automatic regulation of fluid flows through an aperture for use with immiscible liquids having differring densities, wherein the volume, weight and shape of a floatable plug are selected to provide a negative buoyancy with respect to the ... | 07/10/1984 |
| 4444230 | Tank-mounted filling device The housing of the filling device mounted on the tank wall defines a chamber wherein a spring-activated cut-off valve is mounted. This valve comprises a head cooperating with a valve seat at the end of a supply duct opening into the chamber and a piston-f... | 04/24/1984 |
| 4390037 | Gas regulation device for gas actuated valves A gas regulation device to delay for a predetermined time the closing of a gas actuated main valve of the type having a main valve conduit connected to the main valve for carrying the gas which actuates the main valve. The regulation device comprises a fi... | 06/28/1983 |
| 4305422 | Filler valve for a gas tank A filler valve for a gas tank, comprising a valve body to be mounted in the wall of the tank, to the upper end of which body a filler hose can be connected, and in the wall of which valve body outlet ports are provided, two shut-off valves being provided ... | 12/15/1981 |
| 4275755 | Steam trap A steam trap is provided having a main locking member disposed in a supply pressure chamber and cooperating with a main valve seat, a pressure chamber provided in the low pressure end and an adjustment member mounted in the pressure chamber which is respo... | 06/30/1981 |
| 4011884 | Liquid-level valving device particularly useful as automatic relief valve A liquid-level valving device, particularly useful as an air-relief valve, comprises a housing including a first chamber having a control member axially movable in an opening therein, and a second chamber defined by a piston carried at the opposite end of... | 03/15/1977 |
| 3993090 | Automatic valving device In an automatic valving device, the combination comprises a container, an exhaust valve mounted in a lower portion of the container, an arrangement for actuating the exhaust valve, a pilot valve mounted in an upper portion of the container and coupled to ... | 11/23/1976 |
