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...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."

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Class 239/574 - Serially arranged valves (e.g., trap or wet flow line)


Subclass of Class 239 - Fluid sprinkling, spraying, and diffusing
Definition: Apparatus comprising at least two flow controlling means
No. of patents: 66
Last issue date: 08/14/2007


1    
NumberTitleIssue Date
7255293Hose-end sprayer assembly
A sprayer assembly for connection to a container of liquid chemical to be sprayed has a manually operable rotary valve mounted within the housing of the assembly and has a carrier liquid duct and a product duct opening into the liquid duct, the valve being selective...
08/14/2007
7191962Sprayer apparatus with backflow valve
The invention comprises, in one form thereof, a sprayer apparatus that includes a disengageable pressurized fluid source, a pressure chamber in fluid communication with the fluid source, a backflow valve, a sealed vessel, and a sprayer outlet. The backflow valve has...
03/20/2007
7188784Automatic rain gutter flushing system
An eave gutter is provided. A downspout is operatively coupled to the gutter. A plurality of spraying components has fittings and nozzles. The fittings and nozzles are positioned at spaced locations along the gutter. A conduit couples a fluid source and the fittings...
03/13/2007
7070125Multi-pattern pull-out spray head
A faucet head having a multi-pattern head and a fluid diversion system. The multi-pattern head has a stream outlet, a first spray outlet, and a second spray outlet. The fluid diversion system comprises a first valve, a second valve, and a water supply input. A first...
07/04/2006
6978914Valve elements for pressurized containers and actuating elements therefor
Apparatus for placing contents of a first container in fluid communication with a delivery apparatus includes an actuating element carried by the delivery apparatus and a valve element carried by the first container. At least one of the actuating element and the val...
12/27/2005
6905084Airless application system and method of spraying
An airless application system. The system includes a primary product container and a sprayer in fluid communication with the primary product container. The primary product container may include a relatively rigid canister, a collapsible bag within the relatively rig...
06/14/2005
6840457Wet-pipe sprinkler system, method of supplying water and dealing with water leak in the sprinkler system
A wet-pipe sprinkler system, method of supplying water to the system, and method of dealing with a leakage of the system are provided, wherein the wet-pipe sprinkler system includes a sprinkler head; a plurality of interconnected pipes for supplying water to the spr...
01/11/2005
6824076Pneumatic control system for a water cannon
A method and apparatus are provided for pneumatically controlling the operation of a water cannon such that the need for electrically power in the immediate vicinity of the water cannon is substantially avoided. ...
11/30/2004
6796515One touch actuated valve
A one touch valve for activating fluid flow between an inlet conduit and an outlet conduit is disclosed. The valve has a flow cylinder defining an inflow chamber in fluid communication with the inlet conduit and an outflow chamber in fluid communication with the out...
09/28/2004
6691937One touch actuated valve
A one touch valve for activating fluid flow between an inlet conduit and an outlet conduit is disclosed. The valve has a flow cylinder defining an inflow chamber in fluid communication with the inlet conduit and an outflow chamber in fluid communication w...
02/17/2004
6676047Double sealing valve
Double sealed valve comprising: a valve seat in a communicating passage formed between an upper passage and a lower passage; a first vertical valve stem and a second vertical valve stem, which is hollow, slidably surrounding that first valve stem; said fi...
01/13/2004
6612505Spraying method of a dispense system
A spraying method of a dispense system for preventing residue, wherein a precise amount of stream fluid is supplied from a fluid supply through a main tube to a nozzle, and the precise amount of stream fluid is sprayed onto a surface of a wafer. A sub-tub...
09/02/2003
6581853Sprinkler structure
A sprinkler structure which has an auxiliary flow control valve, a first handle, a second handle, a pivoting member, and a nozzle head. The auxiliary flow control valve is formed of a valve body and a control knob for controlling the water flow of the val...
06/24/2003
6572029Recirculating paint system having an improved push to connect fluid coupling assembly
A recirculating paint supply system having a supply conduit, a return conduit and a push to connect fluid coupling assembly. The supply conduit supplies a liquid coating composition received from a supply to a spray nozzle. The return conduit returns the ...
06/03/2003
6568605Manual control structures of a pistol-type spray nozzle
A pistol-type spray nozzle includes a handle, a water guiding inner tube, a first water control valve, a second water control valve, a link rod, a control lever, and a thumbknob. The second water control valve is rotatably disposed in the top segment of t...
05/27/2003
6302341Injector for supplying fuel
An injector for supplying fuel into the combustion chamber of an internal combustion engine comprising an injector body having a fuel supplying port connected to a fuel rail, a nozzle port injecting the fuel and a fuel passage connecting the fuel supplyin...
10/16/2001
6248175Nozzle arm movement for resist development
A system and method is provided that facilitates the application of a uniform layer of developer material on a photoresist material layer. The system includes a nozzle adapted to apply a predetermined volume of developer material on a photoresist material...
06/19/2001
6193166Spray nozzle arrangement
An assembly 10 fed by a pressurised pipe 2 and comprising three differently rated spray nozzles 11, 12, 13 is mounted on a spray boom so that 11, 12 and 13 traverse the same area. The nozzles 11, 12, 13 are independently remotely pneumatically controlled ...
02/27/2001
6164558Recirculating paint system having an improved push to connect fluid coupling assembly
A recirculating paint supply system having a supply conduit, a return conduit and a push to connect fluid coupling assembly. The supply conduit supplies a liquid coating composition received from a supply to a spray nozzle. The return conduit returns the ...
12/26/2000
6065694Flow limiter
A flow limiter device for liquid delivery systems including a pipe having a liquid inlet and a liquid outlet, two adjacent chambers within the pipe through which liquid flows between the inlet and outlet, one chamber being smaller than the other chamber, ...
05/23/2000
6053433System and method for one-way spray/aerosol tip
A nozzle mechanism for generating an aerosol-type liquid discharge is provided, which nozzle mechanism ensures one-way movement of liquid during discharge and also has a substantially zero "dead volume" at the tip of the nozzle. The nozzle mechanism inclu...
04/25/2000
6016974Micropump for the nebulization of fluids with enhanced metering valve
The present invention relates to a micropump for the nebulization of fluids with enhanced metering valve. The micropump comprises a hollow body and a set of stem and piston such as to constitute a "metering chamber" in the body. The hollow stem, which exi...
01/25/2000
5979786Fuel injection apparatus
A single solenoid coil controls the movement of a first and second armature respectively. Each armature is connected to a valve element for controlling a fuel supply and for controlling the delivery of the charge respectively. During the period of energiz...
11/09/1999
5961051Shower apparatus
A shower apparatus reduces the effects of water hammer within a portion of a flow route connecting a shower head to a supply, when a flow adjusting mechanism proximal the shower head is operated. The shower apparatus adjusts pressure of a supply fluid dep...
10/05/1999
5855322System and method for one-way spray aerosol tip
A nozzle mechanism for generating an aerosol-type liquid discharge is provided, which nozzle mechanism ensures one-way movement of liquid during discharge and also has a substantially zero "dead volume" at the tip of the nozzle. The nozzle mechanism inclu...
01/05/1999
5779147Dosing nozzle assembly and process for dosing liquid
The present invention relates to a nozzle assembly for dosing liquid while preventing spillage or dripping between the dosing. This nozzle assembly includes a dosing chamber (4) has an inlet (21), a piston housing wherein a piston plunger (5) is disposed,...
07/14/1998
5651504Vented backflow preventer for hose-type faucet
A plumbing fixture having a valve supplying water under pressure to an output and a hose outlet having an intake end has a vented backflow preventer having a housing separate from the valve and having an inlet port connected to the valve output and an out...
07/29/1997
5501400Water spray gun
A water spray gun including a plurality of small holes extending through an annular recess on the inside of the spray-pattern dial and around the border of the dial for producing a broad spray of fine drops of water. One nozzle on the spray-pattern dial h...
03/26/1996
5465908Gas-feeding nozzle
A gas-feeding nozzle 10 for use in a mold 42 attached to an injection molding machine and for introducing a pressurized gas into a molten resin 60 injected into the cavity 48 of the mold, for producing a molded article having a hollow structure, the gas-f...
11/14/1995
5441203Spray nozzle holder containing two valves for flow control
A spray nozzle holder (1) has an inlet (12) through which liquid to be sprayed is admitted and an outlet (14) for passing liquid to a nozzle tip attached in use to the holder. A check valve (50,51,52) is positioned between the inlet (12) and the outlet (1...
08/15/1995
5385305Fuel injection nozzle
A fuel injection nozzle has a tubular body adapted to receive fuel from a fuel line. A restriction member received at the inlet end of the tubular member limits the flow of fuel into the nozzle and is adjustable between minimum and maximum flow rates. The...
01/31/1995
5255398Flow control apparatus, system and method
A water flow control device, flow control system and method of using available swimming pool water for a source of water, adapted to be connected to conventional swimming pool hose apparatus for rapidly serving swimming pools for winter and spring cleanup...
10/26/1993
5213268Sprayer faucet with antibackflow protection
A faucet assembly has a housing formed with a vent passage extending between inlet and vent ports and a feed passage extending between an outlet port and a location in the vent passage between the inlet and vent ports. An inner valve body is displaceable ...
05/25/1993
5111994Flow booster apparatus
An apparatus for boosting the flow energy of water in a showerhead comprising an air inlet port for providing ambient air; a water conduit for receiving water from a water supply source and at least one mixing chamber being in fluid communication with the...
05/12/1992
5105482Flow control apparatus, system and method
A water flow control device, using available swimming pool water for a source of water, adapted to be connected to conventional swimming pool hose apparatus for rapidly serving swimming pools for winter and spring cleanup. The flow control device can be u...
04/21/1992
5067658Diesel engine electromagnetic fuel injector
An injector comprising a plunger for controlling fuel passage between an injection chamber and at least an injection orifice formed in an injection nozzle; and an electromagnetic fuel metering valve for controlling fuel passage through a drain orifice bet...
11/26/1991
5062919Method and an apparatus for bonding together at least two running lengths of material
The invention provides a method and apparatus for joining at least two webs or running lengths of material together by means of at least one strip of adhesive applied to at least one of the webs in such a manner that the consumption of adhesive is reduced...
11/05/1991
5042718Solenoid-valve-controlled fuel injection device, for an air-compressing internal combustion engine
The invention relates to a solenoid-valve-controlled injection device, comprising pump and nozzle, for an air-compressing internal combustion engine having an electromagnetically actuatable control valve. The valve stem of the control valve co-operates wi...
08/27/1991
5027983Apparatus for filling specified amount of liquid
An apparatus for filling a specified amount of liquid comprises a vertical tubular nozzle having a large-diameter portion intermediately of its height and a valve seat at the edge of an open lower end thereof, a valve upwardly and downwardly movably suppo...
07/02/1991
4915304Gun, particularly for crop-spraying
The gun has a hollow grip (1) which incorporates an inlet duct (31), a substantially vertical on-off ball valve (26) occupying a central housing (C) and operated by a lever (3) recessed into the grip, and downstream of the on-off valve, a rotary valve (D)...
04/10/1990
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