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

Icon_funbox Bizarre Patents

Patent No. 6049912

Mountable Printable Placard With Headband

A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.

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 210/136 - Check valve


Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus having means responsive to a change in a flow
No. of patents: 648
Last issue date: 05/22/2012


1                      
NumberTitleIssue Date
8182675Biological cleaning filter apparatus and system for aqua-culture
A filter apparatus may be provided. The filter apparatus may include a multi-port valve; a strainer coupled in flow communication to the multi-port valve, wherein the strainer may include a conical portion and an attachment portion extending away therefrom; a diffus...
05/22/2012
8177968Filter cup assembly
A filter cup assembly includes a first cup having a one-way valve connected to a center of the underside of the first cup 10 and a filtering part is connected to the underside of the first cup. An adaptor is connected between the filtering part and a second c...
05/15/2012
8152996Filter anti-drainback valve and media pack seal
A filter is provided having a housing that includes a cavity. A center tube includes first and second ends spaced from one another. A seat extends radially from the center tube and is arranged between the first and second ends. A media pack is arranged within the ca...
04/10/2012
8118999Swirling air injected pool filter
An improved filter capable of operating in a backwash mode that creates an upward swirling flow in the hollow interior of the pool filter container. During the backwash cycle, water or air and water are injected into the pool filter container at an angle. In the pre...
02/21/2012
8097150Wave energy conversion system
A wave energy conversion system includes a barge support frame having a frame superstructure and a plurality of frame support legs selectively extendable from the frame superstructure, a barge carried by the barge support frame and at least one wave energy conversio...
01/17/2012
7927482Method and system for containing and removing dental waste
A dental waste containment and removal system and method for containing and removing dental waste produced at a dental services facility involves transferring dental waste containing a contaminant such as mercury from a patient's mouth into a dental waste container ...
04/19/2011
7875172Back-water trap for a floor drain system
A back-water trap unit comprises a housing having an outer perimetric wall sealed to a base to define an enclosure, and a removable housing cover comprising inlet apertures. An interior wall, shorter than the housing wall, is sealed to the base to define an inner co...
01/25/2011
7824546Canteen
A canteen including a reservoir for containing unfiltered water; a filter; a spout; and a pump for pumping water from the reservoir, through the filter, and then out the spout as filtered water. ...
11/02/2010
7811450Swirl chamber with movable non-return valve and air injector for prevention of sedimentation in storm water and waste drains
A device for preventing sedimentation by regulating the flow of waste water through drain draining-wells, with or without a pump. The device has of a swirl chamber with connected outlet pipe and provided with an air injector. The swirl chamber which is tapered, gene...
10/12/2010
7727387Swimming pool skimmer pump assembly
A pool skimmer to operate independently of a pool filter pump. A pool skimmer has a bucket assembly similar to pool skimmers that use the filter pump to create a suction to draw and hold surface floating debris inside the pool skimmer where the debris can be removed...
06/01/2010
7648628Water treatment for an aircraft
Water represents an important resource in an aircraft. In modern aircraft, sufficient water reserves are carried along in designated tanks that are regularly refilled by ground personnel. One embodiment relates to a water treatment system for aircraft that may make ...
01/19/2010
7553409Replaceable liquid filter
A replaceable liquid filter, particularly for the lubricating oil of an internal combustion engine, including a substantially cup-shaped housing with a concentrically arranged outlet opening for filtered liquid and at least one inlet opening for the liquid to be fil...
06/30/2009
7531085Device for purifying anaerobic biological wastewater
The invention relates to a device for purifying anaerobic biological wastewater, which wastewater is fed in through a feed pipe (4) and the purified wastewater and built-up gas are removed respectively by a discharge pipe (24) and a gas outlet pipe (
05/12/2009
7517449Water purification filter easily replaced by connector and water purification system using the same
The present invention discloses a water purification filter easily replaced by a connector which can simplify a connection structure of a water purification system by forming paths of feed water, purified water and concentrated water as one port, and which can be ea...
04/14/2009
7501055Ozone on-line injection, reuse, and destruction system
The invention relates to an ozone on-line injection, reuse and destruction system, which draws liquid to be mixed with ozone through a pump. The system mainly comprises a gas-liquid separation device and an ozone destruction device. When mixed with the drawn liquid,...
03/10/2009
7491321Oxidation tank control valve assembly and systems and methods for replenishing a charge of oxygen-containing gas within an oxidation tank
Contaminants are removed from fluid in a system where the fluid is sprayed into an air head at the top of a tank through a diffuser and withdrawn through a pick-up tube. A solenoid valve operates to allow oxygen-containing gas from a compressed gas source to flow in...
02/17/2009
7429325Device for a body fluid bag
A device (2) for a body fluid bag, includes a filtering part (5) and a retransfusion part (6), the filtering part (5) having a filtering part inlet opening (7) and a filtering part outlet opening (8). The outlet opening (...
09/30/2008
7413649Treatment apparatus with modular chemical containing units having one-way valve assemblies
A fluid treatment system that includes at least one treatment module (“pod”) with rigid and impermeable inner and outer surfaces, and an annular center passage which is designed to provide an alternative flow path during the pod backwashing process. At least one...
08/19/2008
7402240Method and system to flush an RO system
A home RO filtration system includes a membrane module having an inlet connected to a feed line, the membrane module also having a concentrate outlet coupled to a concentrate line, and a permeate outlet coupled to a permeate line. The permeate line communicates with...
07/22/2008
7387210Filter cartridge and manifold for a water purification system
A combined filter cartridge and manifold for use in a water purification system or the like, to facilitate substantially drip-free filter cartridge removal and replacement. The filter cartridge includes water inlet and outlet ports for respective connection with inl...
06/17/2008
7384543Circuit for extracorporeal blood treatment and flow-inverting device utilized therein
A circuit is disclosed for extracorporeal blood treatment in which a flow-inverting device is interposed between a blood treatment unit and a blood pump placed on an artery branch connected with a vascular access of a patient. The flow-inverting device allows the bl...
06/10/2008
RE40310Water purification system and method including dispensed volume sensing and control
A water purification system for purifying water flowing through a water flow path. The system includes a water purification device having an inlet and an outlet in the water flow path and at least one interior volume communicating with the inlet and outlet. A purifi...
05/13/2008
7361270Apparatus for water treatment
Water is treated by precipitating dissolved contaminants. A treatment vessel is provided having an inlet for receiving the water under treatment and an outlet for flowing treated water therefrom. A high volume of fine air bubbles are diffused into the water within t...
04/22/2008
7357866Filter module, installation kit for a filter module and a filter device
The invention concerns a module for filtering media. More particularly, the invention concerns a module for filtering fluids and including one or more filter cells stacked on top of one another. The invention also relates to an installation set for the installation ...
04/15/2008
7355298Syphon wave generator
Disclosed is a syphon wave generator for generating electric power from a wave-driven water body in a fast, easy, inexpensive and efficient manner such that the unit has few moving part, is very inexpensive to build and maintain and can withstand storms. The syphon ...
04/08/2008
7354513Countertop water treatment unit
An improved residential countertop water treatment unit for producing potable water suitable for human ingestion such as by drinking or cooking that comprises a vertical arrangement of a base, a cartridge, and a spigot at the top. The base includes an elongated thre...
04/08/2008
7350821Method and system for purging a dispensed fluid within a fluid dispensing system including a filter-free connector apparatus
A connector apparatus is provided which is configured to replace a separation module in a system for dispensing a fluid. When it is desired to purge the system of a dispensed fluid, the connector apparatus, having the same configuration of an inlet and an outlet as ...
04/01/2008
7351344Sterile system and method for filtering biological or medical liquids, especially blood or blood constituents
The invention relates to a sterile system and a method for filtering biological or medical liquids, especially blood or blood constituents. According to the filtering system and method, the sterile air already in the system is collected before the beginning of the f...
04/01/2008
7347933Self-cleaning intake screen
A self-cleaning screen that automatically cleans both the inside and outside surfaces of the cylindrical screen using only the rotation of the cylindrical screen itself. This self-cleaning ability is accomplished by using a fixed brush on the exterior surface of the...
03/25/2008
7341662Distribution and collection headers for a filter bed
A filtration vessel has an inlet for inflow into the filtration vessel of liquid media to be filtered, a body of filter media in the filtration vessel, and a drain to receive filtered liquid media for take off from the filtration vessel. The inlet is configured to i...
03/11/2008
7337791Rollover car wash for large vehicles
A vehicle washer of the rollover type especially suitable for washing large vehicles such as buses and trucks. The washer includes an overhead carriage moving along an overhead guide rail structure and including opposed L-shaped spray arms adapted to wash top and si...
03/04/2008
7335298Modular aquarium filter
A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the cartridges are designed such that they provide a unique internal helical ge...
02/26/2008
7334557Engine lubrication system for supplemental oil filtering and controller based activation of a prelubrication pump
An engine lubrication system comprising a pump for supplying oil to an engine, a filter for purifying the oil and at least one sensor for discerning parameters of the engine lubrication system and generating signals indicative thereof. The engine lubrication system ...
02/26/2008
7329337Universal filter base and engines using same
Filters that remove particulate and other solids from fluids often come in various sizes and include various types of seals. However, filter bases to which the filters are attached are generally manufactured to accommodate only one specific size of filter including ...
02/12/2008
7329339Strainer device for fuel tank
A strainer device for a fuel tank includes a sucking passage member provided with a passage opened in the fuel tank; a filtering member attached to the sucking passage member for covering a hole of the passage; and a conduit connecting portion extending outside the ...
02/12/2008
7323144Apparatus for separating biological sample and separating method of the same
A simplified collecting operation of a biological sample is provided, which enables reduction of the examination cost. The invention comprises a biological sample collecting means 2 for receiving a collected biological sample, a filtering means 21 for ...
01/29/2008
7316775Air-powered filter arrangement
A filter including a filter housing having a spillway and a pneumatic intake assembly that draws water from an aquarium into the filter housing. The filter housing being configured to internally mount to the aquarium. The filter housing having first and second chamb...
01/08/2008
7306715Pump module
A pump module includes a fuel pump, a fuel filter having a filter casing and a filter element, a fuel outlet, and a pressure regulator. The filter casing covers at least a part of the outer circumference of the fuel pump, and accommodates the filter element. The fue...
12/11/2007
7306736Valve mechanism for infusion fluid systems
A method and an apparatus are provided for preventing retrograde flow of fluid, e.g., blood products, into a source of sterile substitution fluid (50). The apparatus of the present invention includes a controllable pinch valve member (110) that is plac...
12/11/2007
7303683Microorganism-removing filter medium having high isoelectric material and low melt index binder
A filter medium capable of removing microorganisms from a fluid such as water. The filter medium includes particles of activated carbon, particles of a substantially insoluble inorganic material having an isoelectric point greater than the fluid being filtered. A lo...
12/04/2007
1                      
 
Sign InRegister
Username  
Password   
forgot password?