Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 8136551 | Carbon nanotube-based gas valve Precise control over gas delivery is achieved at the micro and nanobar mass levels by incorporating blocks of aligned carbon nanotubes into valves and finely adjusting the flow through the block by controlling a compressing force applied to the block. A valve for co... | 03/20/2012 |
| 7213547 | Valve A valve is constructed to strike a balance between providing relatively high sealing yet low friction as components of the valve move. The valve includes a port and an actuator movable relative to the port. A member is disposed between the port and the actuator. The... | 05/08/2007 |
| 7201187 | Low-flow valve A low-flow diaphragm valve is disclosed having a flexible diaphragm that cooperates with a portion of the valve body to open and close the valve. The diaphragm may have a portion for seating in a passage between the inlet and outlet of the valve and may have one or ... | 04/10/2007 |
| 7195034 | Fluid trim apparatus and method A noise reducing apparatus and method for handling of fluid comprises a plurality of discs stacked on one another, each disc having a radially inner periphery and a radially outer periphery, and a plurality of fluid flow channels defined on at least some of the disc... | 03/27/2007 |
| 7189158 | Airflow control system A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to... | 03/13/2007 |
| 7163027 | Air tap assembly An air tap assembly includes a mounting seat, a gasket, a connecting member, and an end cap. Thus, the sealing portion of the first mounting cap of the connecting member is rested on the gasket to interrupt the connection between the vent holes of the first mounting... | 01/16/2007 |
| 7129617 | Rotary-type comb-drive actuator and variable optical attenuator using the same The present invention relates to an actuator and optical attenuator using the actuator. The rotary-type comb-drive actuator includes a substrate, a movable electrode, a drive electrode, one or more vertical springs, one or more vertical spring anchors, a horizontal ... | 10/31/2006 |
| 7114336 | Flow pulsing valve and fuel supply system for a turbine engine incorporating same A pulsing valve assembly pulses metered fuel flow to a turbine engine. The pulsing valve assembly comprises a valve housing having an inlet and an outlet. A divider valve divides metered fuel flow into a first flow portion and a second flow portion. A first actuator... | 10/03/2006 |
| 7063093 | Manual carwash nozzle structure A manual carwash nozzle structure includes a grip body, a barrel member, and a spray nozzle. The barrel member is formed of a connection body, an adjustment valve, and a detergent container. The connection body is provided with a water inlet in communication with a ... | 06/20/2006 |
| 7051994 | Control valve with detachable descrete curtain valve assembly Valves, particularly useful for controlling flow of heat transfer fluids in various heating, air conditioning and ventilation systems, are provided. The valves are of the curtain valve type and operate at very low torque and provide easy assembly and repair. The val... | 05/30/2006 |
| 7040349 | Piezo-electric actuated multi-valve manifold An apparatus controls flow of a fluid from at least one inlet port to at least one outlet port. A support has a rigid, non-flexible portion, at least one pivotable relatively rigid, non-flexible, folded-back arm portion extending from the rigid portion, at least one... | 05/09/2006 |
| 7037411 | Apparatus and method for handling easily polymerizable substance, apparatus for extracting liquid from apparatus under reduced pressure, and process for producing easily polymerizable substance In an apparatus capable of distilling and refining an easily polymerizable substance, piping is performed so that when a strainer in action is switched to a backup strainer, the strainer can be switched after removing air in the backup strainer to replace air in the... | 05/02/2006 |
| 7011378 | Proportional micromechanical valve The present invention provides a proportional microvalve having a first, second and third layer, and having high aspect ratio geometries. The first layer defines a cavity with inlet and outlet ports. The second layer, doped to have a low resistivity and bonded betwe... | 03/14/2006 |
| 7000688 | Supply air terminal device The invention concerns a supply air terminal device (10) including side plates (12) and an air guiding part (13). A heat exchanger (14) is fitted in the device below a supply air chamber (11) for supply air in between air guiding p... | 02/21/2006 |
| 6986365 | High-flow microvalve A method for achieving high flow in valves with small actuation distance is described. A detailed description for a silicon microvalve is provided. An algorithm is described for designing optimized valves. ... | 01/17/2006 |
| 6955187 | Zinc-air battery control valve A zinc-air battery and control valve for controlling air flow to energize the battery. Telescoping inner and outer valve sleeves each have a plurality of openings that when aligned communicate air from the exterior to the interior of the valve. Two actuators are pro... | 10/18/2005 |
| 6845917 | Water outlet structure of ceramic control valve for single-handled faucet A water outlet structure of a ceramic control valve for a single-handled faucet is made up of a valve body having a housing chamber for a regulating seat with a control stick joined thereto to be adapted therein, and an upper switching control valve having a regulat... | 01/25/2005 |
| 6625824 | Automatically controlled system for maintaining a swimming pool The electronically controlled system of the present invention includes a regulator for regulating the flow of water through selected conduits of a filtration system associated with the swimming pool. The regulator includes a rotatable selector (32) arrang... | 09/30/2003 |
| 6439267 | Adjustable flow diffuser When a fluid passes through a conventional elbow, turbulence is created in the fluid flow. The fluid may not stabilize and return to a laminar flow until 40-50 pipe diameters downstream. Turbulence in a piping system can cause a variety of problems such a... | 08/27/2002 |
| 6289934 | Flow diffuser When a fluid passes through a conventional elbow or valve in a piping system, turbulence is created in the fluid flow. The fluid may not stabilize and return to a laminar flow until 40-50 pipe diameters downstream. Turbulence in a piping system can cause ... | 09/18/2001 |
| 6279605 | Water stopping seat of ceramic control valve of faucet A ceramic control valve of a faucet including a water stopping seat which is provided in the periphery thereof with a retaining edge. The water stopping seat is disposed in a floating fashion in the cylindrical valve body of the ceramic control valve such... | 08/28/2001 |
| 6234205 | Surgical probe adapted for smoke evacuation A valved device is provided for controlling flow into or out from a surgical patient. It includes a body defining a flow passageway and a valve connected to the body in flow communication with the body's passageway. The valve includes a barrel and a pisto... | 05/22/2001 |
| 6227245 | Undersea hydraulic coupling with internal guard for flow port An undersea hydraulic coupling member is disclosed having angled flow ports to prevent ingress of debris into the hydraulic lines. A port guard attached to the valve actuator closes the flow ports unless the poppet valve is opened by mutual engagement wit... | 05/08/2001 |
| 6039075 | Band controlled valve/actuator A band controlled valve apparatus for controlling fluid flow from a source to a sink, including a base (12) having an upper surface and an aperture (16) extending from the upper surface through the base (12) allowing the flow of fluid from the source thro... | 03/21/2000 |
| 6019346 | Piezo-actuated high response valve A high response valve (10) has a leaf spring (25) preloaded and positioned over an orifice plate (23). The orifice plate (23) has a plurality of interleaved ridges (62, 64) and grooves (61, 63, 65) with the grooves being in continuous communication with a... | 02/01/2000 |
| 5769388 | Flow diffuser and valve A flow diffuser is shown for use with a flow control valve which produces laminar flow patterns in the fluid upon exiting the control valve. The flow diffuser is formed from a cylindrical body and is situated inside a flow control valve. Fluid enters the ... | 06/23/1998 |
| 5641895 | Dynamic contaminant extraction measurement for chemical distribution systems A method for qualifying a chemical distribution system and components used therein to ensure that the quantity of contaminants extracted from the system by the chemical is below a predetermined specification level. A volume of the chemical is continuously... | 06/24/1997 |
| 5445185 | Piezoelectric fluid control valve A piezoelectric fluid control valve (10) and fluid control method using a polymorph (48) with a characteristic that as a potential difference is applied thereto, the polymorph is deflected. The valve includes a supply port (14) for introducing fluid and a... | 08/29/1995 |
| 5400824 | Microvalve A microminiature valve in multi-layered structure for switching or controlling fluid flows is proposed, having an inlet and a closing element. The inlet is embodied in a first layer in the form of at least one through-opening. The closing element is struc... | 03/28/1995 |
| 5230367 | Quiet high pressure reducing valve The present invention relates generally to fluid flow control valves and more particularly to orifice assemblies of the type which are continuously adjustable wherein a high pressure reduction is divided into multiple smaller pressure drops to reduce tota... | 07/27/1993 |
| 5218998 | Linearly adjustable A linearly adjustable fluid damper of the sliding plate adjustable orifice type damper system having a fixed flat plate with a plurality of specifically arranged trapezoidal shaped apertures therethrough, and a slideably adjustable flat plate also having ... | 06/15/1993 |
| 5103869 | Piezoelectric on-off valve for air conditioning A piezoelectric on-off value for air conditioning comprises a bendable metal plate fixed at one end thereof; a valve member mounted on the other end of the metal plate along a ceiling plate, the value member having vent holes corresponding to vent holes i... | 04/14/1992 |
| 5054522 | Microvalve A valve plate (14) provided with slot-like valve ports (16) is able to slide between two stationary valve plates (10 and 12) which are joined with each other and are provided with corresponding slot-like valve ports (16). A electrostatic drive is integrat... | 10/08/1991 |
| 5048568 | Quick opening slide valve A slide valve is described that has the capability to open rapidly at a rnably controlled speed. The valve has two concentric tubes with each tube having a plurality of slots. In the valve closed position the slots are misaligned both axially and circumf... | 09/17/1991 |
| 5020567 | Drainage valve having a flexible flap with an edge taper A valve is installed into an underground conduit to control drainage of water through that conduit. The drainage control valve includes a perforated plate across the conduit. The latter plate is formed with a peripheral groove rectangular in cross section... | 06/04/1991 |
| 4958773 | Fuel injection An injector has a single tapered valve controlling fuel flow to a plurality of outlet passages. The entrance to each outlet passage has an orifice surrounded by a raised valve seat. Each valve seat is separated from the other valve seats by a recessed spa... | 09/25/1990 |
| 4958774 | Fuel injection An injector has a single tapered valve controlling fuel flow to a plurality of outlet passages. The entrance to each outlet passage has an orifice surrounded by a raised valve seat. Each valve seat is separated from the other valve seats by a recessed spa... | 09/25/1990 |
| 4776752 | Speed governed rotary device A governor device for controlling the speed of rotary devices is disclosed. The governor device is a valve operated by centrifugal force to control a pressurized fluid through the nozzles of a turbine rotor. The valve comprises a rotary chamber having an ... | 10/11/1988 |
| 4729407 | Digital control valve This invention discloses a control valve comprising a plurality of circular cylindrical wall partitions separating a first compartment open to an inlet port from a second compartment open to an outlet port of the control valve, wherein each of the circula... | 03/08/1988 |
| 4700746 | Control valve for high pressure fluids A control valve for dissipating the energy of a high pressure flowing media, the apparatus comprising a valve body having an internal cavity, an inlet and at least one outlet, the inlet, outlet and cavity being in communication to form a flow path through... | 10/20/1987 |
