U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Bizarre Patents

Patent No. 5508049

Pizza Pie With Concentric Rings of Crust

A pizza mold for forming a plurality of concentric raised ridges of dough (i.e., crust) on the surface of a pizza pie.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 137/625.3 - With metering feature


Subclass of Class 137 - Fluid handling
Definition: Devices having means to vary the flow through the parallel
No. of patents: 378
Last issue date: 09/28/2010


1                    
NumberTitleIssue Date
7802589Multirate tubing flow control valve
A flow control valve includes a stem extending into an interior bore defined by a wall of a flow control member of the valve, the stem and the wall defining therebetween a cylindrical space allowing fluid communication between apertures formed in differing planes of...
09/28/2010
7766041Flow force reduction by incremental pressure drop
A fluid flow control device for improving, for example, valve operation by reducing “error forces” occurring due to fluid communication between ports of a valve having two or more ports. Incremental pressure drop passages bleed incrementally the flow of fluid be...
08/03/2010
7690396Multirate tubing flow restrictor
A flow control valve for medical liquid is disclosed. The valve has a housing including an inlet, an outlet, and a flow path therebetween. A plurality of flow restrictors are located in the flow path to define a plurality of flow streams of differing flow rates. A f...
04/06/2010
7363937Replaceable sleeve insert for a choke assembly
A replaceable sleeve insert for a choke assembly is disclosed, wherein the replaceable sleeve insert has a tubular member coaxially and sealingly retained within an upper body section of the choke assembly. The tubular member is also sealed against the bonnet. The t...
04/29/2008
7363941Fluid control valve device
Certain embodiments of a fluid control valve include one or more ceramic components that operate substantially free of tensile stress concentrations along the control surfaces. In some embodiments, a fluid control valve includes a ceramic plug having a set of longit...
04/29/2008
7353837Pressure reducer with adjustable flow restrictor
A pressure reducer has a housing comprising an inlet and an outlet in which a flow-around body is arranged in a flow channel connecting inlet and outlet. A flow restrictor is adjustably mounted relative to the flow-around body for varying a flow rate and is movably ...
04/08/2008
7347387Distributor for distributing a fluid to a number of fluid application nozzles
A distributor which is mountable on a vehicle and is arranged for distributing a fluid from a reservoir to a number of nozzles through which the fluid is dispensed. The distributor includes housing, a first number of connections extending from the reservoir to the h...
03/25/2008
7331564Normally open high flow hydraulic pressure control actuator
A solenoid-operated valve includes a valve body defining a valving bore for providing a path of communication between axially spaced inlet and outlet ports. A solenoid assembly is attached to the valve body and includes an inductor coil, a fixed flux guide and an ar...
02/19/2008
7320340Fluid pressure reduction devices
Fluid pressure reduction devices for use in gas and liquid handling systems are disclosed. An example fluid pressure reduction device includes a plurality of cylinders, each having an inner diameter surface and an outer diameter surface and a plurality of apertures ...
01/22/2008
7284968Bidirectional air pump
A bidirectional air pump to selectively inflate or deflate an inflatable object has a housing, a pump assembly and a motor. The housing has a controller cover, a pump cover, and a motor cover. The pump assembly is mounted inside the housing and has a centrifugal pum...
10/23/2007
7284569Steam valve
In a steam valve, a strainer is arranged between a valve body and a valve casing in which the valve body is accommodated, and a screen assembly is mounted on an outer peripheral portion of the strainer. The screen assembly includes a temporary screen unit and a perm...
10/23/2007
7273068Electric driven, integrated metering and shutoff valve for fluid flow control
A fuel control valve (100) includes a rotary throttling valve assembly (4,7) providing one or more of the benefits of being lightweight, having a relatively low power consumption, having a fail-closed structure and/or zero leakage. The fuel control val...
09/25/2007
7264224Valve with offset venturi
A valve is disclosed having a valve closing member that divides the valve bore into passageways of unequal cross sectional areas when in an open position. A venturi is positioned within the valve bore upstream of the valve closing member. The throat of the venturi m...
09/04/2007
7252701Method of cleaning electric filter and electric filter
The invention relates to a method of cleaning an electric filter and to an electric filter. In the method gas containing particles is fed to a chamber (2) of the electric filter. The gas is further fed to gas channels (5) in an emission system (3
08/07/2007
7240694Flow control valve for refrigeration system
A flow control valve includes a valve body defining fluid inlet and outlet sections interconnected by a connecting port. A valve unit is disposed in the valve body and is operably connected to an actuator to be moved thereby for opening and closing the connecting po...
07/10/2007
7237573High pressure, low flow rate fluid flow control
An adjustable high pressure, low flow metering valve provides a sleeve extending about a restrictor shaft, the sleeve having a narrow helical groove formed in the inside diameter. A restrictor shaft within the sleeve encloses the groove and forms a sealed helical fl...
07/03/2007
7234488Valve assembly and method with slotted plates and spherical ball plug
A valve assembly, comprises a housing having an inlet, an outlet, and an internal volume; a pair of sealing rings and mounted to the housing; and a spherical plug rotatably disposed within the housing for contact with the seating rings, the spherical plug comprising...
06/26/2007
7207352Bushing for thermally independent bypass air metering valve
A bypass air metering valve is provided with a stationary case flange having a plurality of slots, a bushing positioned within each of the slots, and a metering ring positioned so as to ride on a surface of each respective bushing. Each bushing creates a gap between...
04/24/2007
7201188Fluted reciprocating ball valve
The device described herein is a valve suitable for the control or shut-off of fluid flow in a piping system. It comprises a valve housing having inlet and outlet ports and a cylindrical bore whose axis is slanted at about 90 degrees in relation to the axis connecti...
04/10/2007
7201186Electronic valve for flow regulation on a cooking burner
The gas flow regulating valve (1) is adapted to one cooking burner amongst the several on a cooking hob. The regulating valve member (7) is cylindrical-shaped and coupled to a step motor “M”, which controls the axial displacement “X” thereof th...
04/10/2007
7195034Fluid 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
7185675Reduced gain thrust control valve
A reduced gain thrust control valve for use in a rocket engine has a housing with a fluid inlet and a piston and cylinder unit for controlling a fluid output of the control valve. The fluid inlet is formed by at least one metering element formed in the housing. The ...
03/06/2007
7178782Quiet opening ball valve
A valve uniquely integrates ball valve and throttling valve principals, thus affording quieter stop-and-start operation. A ball held by two seat rings is rotatable ninety degrees and has a diametric bore adjustable between fully closed (0°) and fully open (90°) po...
02/20/2007
7174913Gas tap for a cooking appliance, with a cover for the rotary shaft
The manual gas tap for a cooking appliance is of the type with a conical plug (3) for regulating the outlet gas flow (G), accommodated in a central housing (2a) in the tap body, and has a rotary actuating shaft (4) coupled to the conical ...
02/13/2007
7156122Rotary ball valve assembly
A method of forming a ball valve element for a rotary ball valve assembly, the method comprising the steps of: (a) inserting an impedance element through an insertion opening of a ball valve element into a bore; (b) forming a fluid opening in the ball valve element ...
01/02/2007
7152628Anti-cavitation valve assembly
A valve assembly for reducing cavitation includes a seat disposed within a valve housing intermediate a fluid inlet and outlet thereof. A disc guide is associated with the seat so as to be slidably moveable relative to the seat. The seat includes a wall defining an ...
12/26/2006
7146997Regulator with flow diffuser
A flow-through pressure regulator having a housing, and a divider. The housing includes an inlet and an outlet disposed along a longitudinal axis. The divider separates the housing into a first chamber and a second chamber, and includes a seat, a diaphragm, a retain...
12/12/2006
7147203Fluid control
Fluid control apparatus and method of controlling fluid flow. The fluid control apparatus comprises an elongate tube having a first flow opening at an end of the tube and at least one second flow opening along the length of the tube, and a sleeve arranged to slide a...
12/12/2006
7131284Automatic defrost controller including air damper control
A damper apparatus for controlling airflow between compartments in a two compartment refrigerator having a door includes a controller for controlling opening and closing of a damper; and a door sensor connected to the controller for detecting when the door is open. ...
11/07/2006
7130324Axial flow type gas laser oscillator
A gas laser oscillator achieving a substantial increase in laser output is provided. This gas laser oscillator includes a permeable screen plate at a position of a laser gas passage and can increase the laser output substantially by suppressing and uniformizing lase...
10/31/2006
7117894Ball valve with high damping of the noise due to fluid passage
A regulation ball valve for a fluid flow in which a ball is rotatable to bring a passage thereof from a limit position of full opening of the valve to a limit position of full closure of the valve and vice versa. Present in the passage are perforated baffles that at...
10/10/2006
7111642Valve having fast and slow acting closure elements
A first valve portion and a second valve portion are arranged in series in a flow passage within a valve casing to open and close the flow passage. The first valve portion includes a first valve seat, a first valve element supported to a first valve shaft and adapte...
09/26/2006
7104283Normally open hydraulic control valve
A normally open hydraulic control valve includes: a linear solenoid unit; a spool driven by an output force of the linear solenoid unit to move forward; a valve body in which the spool is fitted; and a return spring for biasing the spool in a retreating direction. T...
09/12/2006
7089961Fluid energy reduction device
A fluid energy reduction device especially for a flow control valve has a fluid inlet and a fluid outlet separated by a plurality of stacked plates in the form of a trim stack. Each plate of the stack has a plurality of rows of discrete, spaced columns that extend t...
08/15/2006
7077931Method and bleaching line with a main conduit for wash liquor
The method is for bleaching cellulose pulp in a bleach line that has at least two bleaching steps. The filtrate distribution is led up through the bleaching line counter-currently to the flow of cellulose pulp established in the bleaching line. A single joint main c...
07/18/2006
7073532Valve assembly
A valve assembly (10) comprises a valve stem (14) with a bore (15) and radial apertures (17), and a sleeve (18) closed atone end and slidable over the valve stem (14) to obstruct the apertures (17). At the end of the ...
07/11/2006
7069950Noise abatement module using Herschel-Quincke tubes
A noise-attenuating module of a valve trim, including: a first divider plate; a second divider plate; and a plurality of flow segment plates disposed adjacent to and in contact with one another. At least one Herschel-Quincke tube flow path is formed by interconnecte...
07/04/2006
7055548Control valve trim and seat design for valve trim with minimal unbalanced area
A fluid control valve trim and seat with a valve plug of a radius of about 0.03 inch, when used in conjunction with a valve seat angle of about 75°, results in minimal unbalance area. The valve trim is provided with pairs of anti-cavitation notches. The notches are...
06/06/2006
7051746Valve having pressure balancing piston and method involving same
A valve assembly is disclosed that provides for complete or partial fluid pressure balancing across the valve, and can be used for reducing valve actuation forces in order to employ electric actuation. The valve assembly includes a valve housing having a valve chamb...
05/30/2006
7044434High recovery sonic gas valve
A high recovery sonic gas valve design with the inlet flow entering transverse and orthogonal to the outlet flow is presented. The configuration cancels the effects of the inlet flow entering orthogonal to the axis of the nozzle and diffuser. The inlet passage is cu...
05/16/2006
1                    
 
Sign InRegister
Username  
Password   
forgot password?