Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8151822 | Integral overpressure monitoring device The present invention provides an integral cantilever monitoring device for a regulator having a positionable vent port that may be disposed proximate the lowest point of the monitoring device to allow drainage of liquids accumulating within the monitoring device du... | 04/10/2012 |
| 8087428 | High pressure inlet regulator A two-stage regulator having a piston situated in a first stage for substantially reducing high pressures introduced into the regulator. The reduced pressure is exerted against the second stage that includes a plunger-actuated diaphragm that urges an actuator to ope... | 01/03/2012 |
| 7635005 | Very small high pressure regulator A Gas regulator capable of reducing the pressure of a gas supply from thousands of psi to as low as 30 psi with an accuracy level of +/−1 psi. The regulator uses at least two oppositely oriented gas stages to reduce the pressure. The first stage performs gross pre... | 12/22/2009 |
| 7575020 | Multi stage pressure regulator A pressure regulator is disclosed wherein multiple valve stages are used to accommodate low flow rates and to maximize a turn-down ratio of the regulator. ... | 08/18/2009 |
| 7363938 | Constant flow valve assembly A dual valve assembly includes two regulating valves. Each valve includes an outer housing comprised of a cap joined to a base. The housing is internally subdivided by a barrier wall into a head section and a base section, the latter being further subdivided by a mo... | 04/29/2008 |
| 7352287 | Pneumatic controller A pneumatic controller for controlling a device. ... | 04/01/2008 |
| 7328718 | Automatic changeover regulator A pressure regulator (10) includes a changeover regulator (12) with plural inlets (16, 18). Inside the regulator, each inlet has a closure member (62) connected to a diaphragm (100) for control of the closure members (62) in... | 02/12/2008 |
| 7293574 | Gas cylinder regulator The pressure regulator is threadable onto the neck of a tank of gas under pressure that has a plug mounted in the neck and a rupturable disk blocking fluid flow through a plug bore. The main body includes a central reduced diameter portion extendable into the plug b... | 11/13/2007 |
| 7264896 | Two-stage hybrid gas pressure regulator A gas pressure regulator (100) includes a mechanical primary stage (102), preferably including a spring valve, and an electronic secondary stage (104), preferably including a micromachined pressure regulator, the combination of the mechanical pr... | 09/04/2007 |
| 7219688 | Fluid control valve A fluid flow control valve includes a housing having a fluid inlet and a fluid outlet, which define a flowpath therebetween. Within the housing is a chamber located in the flowpath between the fluid inlet and the fluid outlet. A valve member is mounted within the ch... | 05/22/2007 |
| 7216843 | Pilot-controlled electromagnetic valve system A pilot-controlled electromagnetic valve system has an electromagnetic valve block mounted on the top of a manifold block. A bearing surface is formed on the top of the electromagnetic valve block at a position adjacent to a screw accommodating recess formed on a jo... | 05/15/2007 |
| 7191768 | Gas fuel feed device It is an object of this invention to provide a gas fuel supply system in which a controllable range in the fuel injection quantity control by an injector is enlarged. According to one preferable aspect of this invention, the gas fuel supply system comprises an injec... | 03/20/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7150299 | Assembly and method for containing, receiving and storing fluids and for dispensing gas from a fluid control and gas delivery assembly having an integrated fluid flow restrictor A fluid control and gas delivery assembly and method for containing, receiving and storing hazardous fluids and for dispensing gas comprising a container, a fluid fill path, a gas dispensing path, a first shut-off valve, a pressure reducer, a fluid flow restrictor, ... | 12/19/2006 |
| 7086414 | Gas bottle assembly A gas bottle assembly includes a container for containing a pressurized gas, and an operating head, the operating head including a valve member which in the absence of any demand for the gas, is positioned close to a valve seat such as to permit only a minimal flow ... | 08/08/2006 |
| 7059343 | Direct acting gas regulator A direct acting pressure regulator controls the flow of a gas from a high pressure source to a low pressure device. Gas is delivered from the regulator at a predetermined outlet pressure. The regulator includes a body having a high pressure inlet and defining a seat... | 06/13/2006 |
| 7055547 | Circuit balancing valve A circuit balancing valve includes a valve body having fluid flow passage extending therethrough. The fluid flow passage includes a fluid inlet passage-side in fluid communication with a supply line, and a fluid flow outlet passage-side in fluid communication with a... | 06/06/2006 |
| 7051755 | Adjustable pressure regulator An adjustable floating seal piston type pressure regulator valve of the type wherein a spring biased piston engages a floating seal in a regulator body valve chamber to open and close a valve seat outlet in the valve chamber. The valve seat comprises a separate memb... | 05/30/2006 |
| 7013916 | Sub-atmospheric gas delivery method and apparatus An apparatus for containing and delivering hazardous gases at sub-atmospheric pressure from a pressurized container is provided which includes a valve body in sealed communication with an outlet orifice of the pressurized container. The outlet orifice of the pressur... | 03/21/2006 |
| 6968857 | Pressure reducing fluid regulators A pressure reducing fluid regulator having a housing with a flange including a plurality of ear-shaped protrusions is disclosed. Each of the protrusions includes at least one aperture configured to receive fastener such that the circumferential spacing between first... | 11/29/2005 |
| 6959724 | Multiple regulator vacuum delivery valve assembly This invention is directed to an apparatus for controlling the discharge of pressurized fluids from the outlet of a pressurized vessel, and particularly directed to multiple fluid regulating devices within the vessel for storing and controlling the flow of fluid or ... | 11/01/2005 |
| 6948519 | Device for regulating the flow of gas toward user equipment A device for regulating a flow of gas toward user equipment, which comprises a first regulation stage and a second regulation stage arranged downstream in a direction of flow of the gas to be controlled, further comprising a flow limiter interposed between the first... | 09/27/2005 |
| 6923197 | Pressure regulator with tamper-proof safety feature A pressure regulating system having a tamper-proof safety feature. A pair of seats are mounted to an annular pipe. A first bleed pipe, with a fixed restriction, extends from an inlet conduit to a first chamber. The first chamber is separated from a second chamber by... | 08/02/2005 |
| 6901952 | Gas flow regulation system A gas flow regulation module for use in a pressure vessel including a wall with an opening having a minimum opening diameter. The wall defines an interior space in the pressure vessel. The module includes a head portion, a neck portion, and a body portion. The body ... | 06/07/2005 |
| 6722388 | Multiple pressure regulator A pressure regulator having a valve cartridge adapted to be removably held within its housing, said cartridge having a frame carrying and positioning a valve seat, a valve member, a valve stem, and a spring. The valve cartridge ensures correct spacing between the va... | 04/20/2004 |
| 6691798 | Variable hand pressure activated power tool A hand-held power tool for use in hand working operations including a hand pressure sensing element for adjusting the power of the tool. More specifically, the invention provides a hand engraving power tool that is activated from absence of power to much ... | 02/17/2004 |
| 6591851 | Seal-gas valve device During the pumping of corrosive gases, it is advantageous to admit a seal gas to endangered pumping chambers at a lower flow rate and a higher pressure than the corrosive gases. Inert gas from a supply (3) has its pressure reduced by a pressure reducer (6... | 07/15/2003 |
| 6488046 | Pressure reducer for compressed gases Pressure reducer for compressed gases, comprising at least one regulation stage constituted by a chamber divided by a first membrane (25) into two chambers (23, 24), one of which said chambers (24) is maintained at a reference pressure and the other (23) ... | 12/03/2002 |
| 6253708 | Remote controlled drinker system and drinker line control valve A poultry drinker system includes a number of drinker runs each including a selector valve, a drinker line control valve and a drinker line having a plurality of drinkers. The selector valve applies to the corresponding drinker line control valve either a... | 07/03/2001 |
| 6186168 | Pressure Regulator A regulator for regulating outlet pressure of a fluid contained in a tank includes first and second pistons. The first piston is biased in a first direction and is movable against the bias when exposed to pressure in the tank. The second piston is biased ... | 02/13/2001 |
| 6176256 | Gas pressure-reducing valve A gas pressure-reducing valve in which a valve member to be seated on a valve seat having a valve hole opened at its central portion and leading to a pressure-reducing chamber between a body and a diaphragm is fixed on a valve stem connected to the centra... | 01/23/2001 |
| 6173735 | Method and apparatus for regulating gas flow A pilot-operated, pressure-loaded, movable diaphragm-type gas-flow regulator valve is shown which is used in flow control applications. A regulator body internal port arrangement interconnects two independent throttling mechanisms in series. Two throttle ... | 01/16/2001 |
| 5996617 | Low pressure regulator A two stage gas pressure regulator with a body housing having a gas inlet and a gas outlet, and a common interior wall dividing the body housing into two chambers forming two pressure reducing stages. Respective intersecting fluid passageways through the ... | 12/07/1999 |
| 5868154 | Propane supply system with secondary containment tank A propane gas delivery system having a large storage tank, a supply conduit to deliver propane gas, a first regulator and a second regulator to reduce pressure, where a secondary containment tank is provided to receive and retain any liquid propane which ... | 02/09/1999 |
| 5797425 | Three stage gas pressure regulator The present invention provides a supplementary pressure regulator that can be used with conventional single or multi-stage pressure regulators. It may also conveniently be used with a novel two stage balanced pressure regulator to form a three-stage vacuu... | 08/25/1998 |
| 5755254 | Two stage pressure regulator The present invention provides an improved two-stage pressure regulators for various compressed gases, and more particularly to pressure regulators used for gaseous fuels such as compressed or liquified natural gas. The pressure regulator of the present i... | 05/26/1998 |
| 5740833 | Gas pressure regulator A two stage gas pressure regulator with a body housing having a gas inlet and a gas outlet, and a common interior wall dividing the body housing into two chambers forming two pressure reducing stages. Respective intersecting fluid passageways through the ... | 04/21/1998 |
| 5730166 | Fluid pressure reduction A fluid pressure reduction system includes at least two streams. A working stream includes valves with associated pressure sensors for modulating output pressure. A control system monitors pressure via a sensor and actuates a slam shut valve in the event ... | 03/24/1998 |
| 5598869 | Pressure regulating unit A pressure regulating unit for providing two different controlled pressures includes a block made of a single piece of metal and having a mounting structure integrally provided thereon and a gas flow passage provided therein. A first regulator has a gas i... | 02/04/1997 |
| 5520206 | Exhaust reduction system for control valves An exhaust reduction system for reducing gas emissions in pipeline controlling devices which operate control valves, which system adjusts and reduces the pressure of a control stream of gas from a conventional line pressure regulator to the control valves... | 05/28/1996 |
