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

Icon_funbox Bizarre Patents

Patent No. 5901666

Pet Display Clothing

A vest or belt is integrally formed with tubular, pet receiving passageways which extend around the wearer's body and terminate in pocket-like chambers for feeding and retrieval.

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 210/352 - Internal spring


Subclass of Class 210 - Liquid purification or separation
Definition: Apparatus wherein the means to compress comprises a spring
No. of patents: 59
Last issue date: 10/23/2007


1    
NumberTitleIssue Date
7285148Spring-loaded air cleaner cover
A filter assembly for an engine and operable to support a filter element. The filter assembly includes a housing defining a filter receiving space having a first end and a second end. The first end and second end defining an axial length therebetween. A biasing elem...
10/23/2007
7247245Filtration cartridge and process for filtering a slurry
A depth filter design is disclosed which has little if any open void area upstream of the media. Preferably, it also has little if any open void area downstream of the media as well. A preferred embodiment uses layers of stacked, fibrous media with several of the la...
07/24/2007
7241383Fluid treating method and apparatus
A fluid treatment method includes the steps of forming a ring lamination by laminating a plurality of filtering rings with contact surfaces facing each other in a laminating direction; providing at least portions of the filtering rings with a contact surface roughne...
07/10/2007
7192528Self-cleaning filter apparatus
A self-cleaning filter system is disclosed that includes an inlet fitting that is adapted to be inserted into an existing filter body. A spray tube having a plurality of outlets that slideably engages the inlet fitting, is positioned in the ring discs of the existin...
03/20/2007
7188731Variable flexure-based fluid filter
An apparatus and method for filtering particles from a fluid comprises a fluid inlet, a fluid outlet, a variable size passage between the fluid inlet and the fluid outlet, and means for adjusting the size of the variable size passage for filtering the particles from...
03/13/2007
7153425Process and filter for filtering a slurry
The present invention comprises a process for filtering a slurry and a filter cartridge construction for filtering a slurry having a filtration medium formed of a depth filter such as a cylindrical seamless fibrous depth filter comprising a nonwoven fibrous mass, wo...
12/26/2006
7097763Ion exchange filter apparatus
An ion exchange filter apparatus to reduce ions contained in a liquid medium used in a fuel cell system is equipped with an ion exchange filter 6 to receive an ion exchange resin 38. The ion exchange filter 6 includes a flow passage 27 to...
08/29/2006
6936084Filter for the separation of contaminants from gas stream
A filter for separating contaminants from a gas stream, including (a) a housing having a housing body and a housing head, the housing head having an inlet for the gas stream to be purified, an outlet and a first sealing surface, and (b) a filter element accommodated...
08/30/2005
6918951Disc-type air filters
An air filter includes a stack of filter discs formed with contacting faces having surface formations defining filtering passageways between adjacent discs for removing solid particles from the air passing through the stack. The filter discs in the stack further inc...
07/19/2005
6893555Dual flow filter
A dual flow filter unit for the filtration of a pressurized liquid such as oil, comprising a closed housing (10) having an inlet (31), and main and secondary outlets (32, 13) for that liquid. The unit further comprises a main filter element (...
05/17/2005
6770110Filtering device comprising a detachable filter housing
The invention relates to a filtering device (1) comprising a tubular filter (6). One end of said filter is supported on a base part (2) and the other end is supported on a cupped filter housing (3). The filter housing overlaps the filter ...
08/03/2004
6761270Wave coil filter assembly
A filter assembly and a method of filtering a fluid using the filter assembly are disclosed. The filter assembly includes wave coils arranged axially to define a filter element. The filter element includes bottom and top ends and an inner cavity. The filter assembly...
07/13/2004
6536600Filter device incorporating a wound paper filter element
The invention relates to a filter device for microfiltration of oil, in particular for use in engines, automatic transmissions and hydraulic applications. The filter device comprises a tubular microfilter cartridge through which medium can flow in the tra...
03/25/2003
6419826Self-cleaning filter
Improved self-cleaning filter, comprised of a casing (1) with an entry (2) for water towards an encircling chamber (5), a filtering element based on a plurality of grooved disks (10), an axial passage (14) in the breast of these disks and an axial exit (9...
07/16/2002
6413290Filter cartridge with detection device
A filtering device for treating substances passing therethrough includes a filter cartridge having a cylindrical inner wall surrounded by a cylindrical outer wall. The inner and outer walls are spaced to define an annular space between them. A filtering m...
07/02/2002
6398037Reverse flow spin-cleaning liquid filters
A liquid filtering device having a pack of cylindrical filter member discs (70) with an arrangement for reversed, filter flushing flow cycles. An integrally formed filter core (24) is provided comprising tubular nozzled conduits (30a, 30b, 30c) so that wa...
06/04/2002
6224764Apparatus for purifying and disinfecting water
An apparatus for purifying and disinfecting water including a tubular housing having a rear inlet end and a front outlet end, a disinfection stage and an absorption stage containing activated charcoal being provided in the housing between the rear inlet e...
05/01/2001
6135293Water/sludge filter press
A water/sludge filter press used with a filter bag for filtering water and collecting sludge in the bag. When the filter press is actuated, the filter bag is compressed therein for dewatering the sludge in the bag for ease in removing the sludge and reusi...
10/24/2000
5882531Water filtration technique using granular media
A water filtration technique is designed to maximize the efficient performance of a variety of granular filtration media. The technique maintains the granular filtration media in a compacted state between a perforated outer media container and a perforate...
03/16/1999
5785870Variable flow filter unit
A filter unit (10) designed to filter process streams having different components and/or different fluid flow rates. The filter unit includes an elongated filter housing (12) having an inlet port (14) at one end and an outlet port (19) at the other end. A...
07/28/1998
5770070Radioactive waste disposal cartridge
This invention relates to the use of a unique apparatus and method for extracting radioactive components from liquids, such as electrophoresis buffers. In the present invention, the radioactive liquid is pumped or transported by other suitable means and i...
06/23/1998
5665231Full flow/bypass filter assembly
A filter of the type having first annular filter media comprising a generally columnar stack of annular filter media lamina for providing filtration for one circuit, a harness for retaining the filter media lamina in stacked columnar alignment comprising ...
09/09/1997
5593577Filter having internally threaded cover non-rotatably mounted to casing of the filter
A filter includes a case, filtering material housed within the case, a cover which covers the open end of the case and is non-rotatable relative to the case, and an annular fastener clamping the cover to the case. The case includes a large-diameter portio...
01/14/1997
5584987Fluid filter assemblies
An oil filter assembly for an internal combustion engine includes a body (31) which provides inflow and delivery passages and an attachable filter element container (45) which is attached to the body by a screw-thread at its open end to enclose a cylindri...
12/17/1996
5520807Stacked fluid-separation membrane disk module assemblies
A stacked membrane disk module has a number of membrane disks interleaved with seal rings and includes a biasing subassembly for maintaining a compressive force between the membrane disks and interleaved seal rings so that the module can be repeatedly pre...
05/28/1996
5507498Sealing device for polymer filtration apparatus
A sealing device for sealing a slide plate translatable across an extrusion bore in a polymer filtration apparatus includes an annular seal having a sealing surface which is biased against the slide plate by an annular spring. The seal has a thrust surfac...
04/16/1996
5500122Stacked fluid-separation membrane disk module assemblies
A module for separating at least one component from a flowing mixture containing the same, includes a pair of end plates between which a plurality of stacked separation disks are positioned. The separation disks separate at least one component from the fl...
03/19/1996
5449468Method and apparatus for dislodging a cake of a chamber filter press
In a chamber filter press (11), two respective filter cloths (13), which enclose a filter plate (12) located therebetween, are fastened on said plate by means of a connecting part (18) and on the underside (19) thereof by means of lashings (14). The filte...
09/12/1995
5364540Filter drier and method of filtering a fluid stream
An apparatus and method for filtering a fluid stream wherein the fluid stream is passed through a first filtering zone to remove particulate materials therefrom above a first preselected micron level, then through a desiccant media bed zone including a mu...
11/15/1994
5318704Apparatus for filtering and coalescing liquids
An apparatus for removing contaminants from a liquid comprises a casing and a tubular filter dividing the casing into two compartments. The tubular filter is formed of fibers attached at each end to end supports which are movable axially relative to one a...
06/07/1994
5296134Filtration structure for fluid flow radially through cylindrical configuration defined by stack of serrated wafers
This invention is a filtration structure characterized by radial fluid flow through the wall of a cylindrical configuration that is established by a stack of serrated annular wafers which are constrained for slight axial movement with respect to each othe...
03/22/1994
5217606Double-filtering filter for vehicle engine lubricants, with compressible fine filtering cartridge
An oil filter for providing coarse and fine filtration of lubricating oil in an internal combustion engine is disclosed herein. The oil filter includes a cylindrical housing closed by a cover containing a coarse-filtering cartridge of pleated paper includ...
06/08/1993
5112479Oil purification unit with cyclonic reservoir section and filtration section
A mobile purification apparatus for purifying oil contaminated with grit, metal particles, water and the like. The apparatus includes a strainer with a filter cartridge for removal of large contaminant particle and a filter apparatus. The filter apparatus...
05/12/1992
5085769Fuel filter assembly for an oil burner pump
An oil burner pump that includes a housing having a filter cartridge chamber that has an access opening which is closable by a removable cover. A filter cartridge is removable inserted into the chamber and is securable to the cover to be removed from the ...
02/04/1992
5080787High-pressure filter assembly, method and apparatus for forming high-pressure filters
A high-pressure filter assembly which includes a cover or nutplate secured to a housing via a sidewall portion of the housing deformed into a groove formed in the cover sidewall. The cover and housing are formed such that the cover can be properly seated ...
01/14/1992
5049271Fuel tank filter
A fuel tank filter connectible to a fuel pump mounted inside of a fuel tank is disclosed. The filter includes filtration material forming an envelope, a separator inside the envelope and a spring attached to the separator in a manner such that the spring ...
09/17/1991
4817437Pressure communicating, fluid isolating interface
A housing which is connectible to a pressure sensitive tool has a filter cartridge mounted within it to communicate a pressure from an external fluid to a clean fluid contained within the filter cartridge and the tool. The filter cartridge includes one or...
04/04/1989
4707259Filter with superposed rings for filtering liquids
A disk filter of the counter-current flow cleaning type, containing superposed ring-shaped elements (12) form a body (9) of a generally cylindrical shape. The elements are arcuate so as to form between them passages which are arcuate and oblique in relati...
11/17/1987
4675109Reverse osmosis permeator
A reverse osmosis permeator of the capillary type wherein the tube sheet in which the ends of the capillaries are mounted and the porous support block therefor are slidably mounted on a hollow feed tube mounted in the center of the permeator is disclosed....
06/23/1987
4661250Mutiple-disc filter
A multiple-disc filter comprises a stack of filtering discs each formed with grooves extending only partially through the thickness of the disc and configured to define a continuous, non-apertured surface on one face and a plurality of spaced ribs project...
04/28/1987
1    
 
Sign InRegister
Username  
Password   
forgot password?