Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8118919 | Air filter and method of constructing same An air filter comprising natural and or man made organza wherein the organza allows air to pass but prevents undesirable air particulates to pass and wherein the organza may be disposed over a frame and may include other mesh material. ... | 02/21/2012 |
| 7998253 | Airflow reducing and redirecting arrangement for industrial baghouse An air filtering unit for a factory includes: an entry duct; a flow expander section fluidly connected with the entry duct, the flow expander section including a flow distribution unit and a flow velocity reduction unit; a filter unit fluidly connected with the flow... | 08/16/2011 |
| 7413587 | Disposable filter for a fluid handling device and a method for using the same A fluid handling device having a support frame and a plurality of filter frames attached thereto. Each of the filter frames has an outer frame member that removably secures a filter; the filters being either a planar filter, pocket filter, or multiple pocket filter.... | 08/19/2008 |
| 7387655 | Air filtration unit An air filtration unit for use in a work environment includes a housing disposed with an air filtration system and light source. The housing includes a handle and corner caps to prevent damage and provide stability. The air filtration system draws air into the housi... | 06/17/2008 |
| 7344580 | Filter unit Converting machines give rise to polluted air which must be removed with the aid of fans and filters. The invention aims at removal of the polluted air in such a way that the servicing interval is greatly extended by the use of a filter unit having a number of part-... | 03/18/2008 |
| 7344576 | Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices capable of separating fluids Methods of separating fluids using capillary forces and/or improved conditions for are disclosed. The improved methods may include control of the ratio of gas and liquid Reynolds numbers relative to the Suratman number. Also disclosed are wick-containing, laminated ... | 03/18/2008 |
| 7344579 | Pipe trap A pipe trap comprising a body, a disc filter, a pipe and a plurality of mesh filter suitable for filtering gases is provided. The pipe trap body has a gas inlet and a gas outlet. The disc filter and the mesh filters are enclosed inside the pipe trap body. One end of... | 03/18/2008 |
| 7338544 | Z-filter media with reverse-flow cleaning systems and methods A method for cleaning a filter having Z-media includes providing a filter having Z-media and cleaning the media construction by directing a pulse of compressed gas into the media construction through the downstream flow face. Filter elements useable with such method... | 03/04/2008 |
| 7329310 | Filter module The invention relates to a filter module having a module housing and at least one filter element. The filter module has at least one inlet opening, at least one filtrate outlet and a module housing having at least one joint line. ... | 02/12/2008 |
| 7318851 | Filter element A filter element, and filter apparatus, include a filter pack, a seal member, and a seal support frame operatively connecting the seal member to the filter pack. The seal support frame includes an annular extension, which is preferably canted at an oblique angle to ... | 01/15/2008 |
| 7306639 | Demisting chamber with elbow strainer A structure and method of removing semi-rigid debris and demisting gas for use primarily in surface maintenance or conditioning machines, Demisting is accomplished by, a combination techniques including rapid pressure reduction and removal of semi rigid debris is ac... | 12/11/2007 |
| 7291196 | Filamentary pad for improved mist elimination and mass transfer An apparatus and method of making a filamentary pad for improved mist elimination and mass transfer comprising a plurality of layers of mesh, each layer of mesh having a plurality of mesh openings defined therein. A plurality of preferential gas flow openings, each ... | 11/06/2007 |
| 7264644 | Methods and apparatuses for mounting a filtration housing for solid filtration media Methods and apparatuses for mounting a filtration housing for solid filtration media. One aspect of the invention includes a method for mounting an air circulation component to an air circulation system, wherein the air circulation component includes a center of gra... | 09/04/2007 |
| 7258712 | Smoke evacuation system A smoke evacuating system for use during surgical procedures, particularly minimally invasive procedures involving the use of a laser or cautery at a surgical site having an associated higher than ambient pressure, wherein the system includes a filter with a site si... | 08/21/2007 |
| 7252704 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 08/07/2007 |
| 7223298 | Filter assembly for pipelines A filter assembly is disclosed for use in connection with the filtration of products transported via pipelines, including high pressure gas pipelines. The disclosed filter assembly is comprised of a plurality of filter modules, a series of valves, inlet and outlet p... | 05/29/2007 |
| 7201039 | Axial flow scan testable filter system A filter system having in-situ scan capabilities is provided. In one embodiment of the invention, the system includes a downstream probe which may be rotated to scan the field of a filter installed in the system. The probe may be utilized for leak detection, velocit... | 04/10/2007 |
| 7182799 | Filter assembly comprising filter elements and a filter grid A filter assembly having a plurality, preferably at least substantially vertically mounted, longitudinal elongated filter elements that are suitable for separating fluid from solid particles, having an open upper end sealed into a sealing device and a closed bottom ... | 02/27/2007 |
| 7160355 | Method and system for regenerating diesel particle filters A method of regenerating at least one diesel particle filter, in which exhaust gas is introduced through a supply line into the at least one diesel particle filter and is discharged from it through a discharge line, while heating of the exhaust gas flowing through t... | 01/09/2007 |
| 7147694 | Fibrous media utilizing temperature gradient and methods of use thereof A method for removing a liquid from a gas, comprises passing the gas and the liquid through a network of fibers containing at least one fiber in which a temperature gradient has been induced along at least a portion of the length of the fiber, thereby permitting dro... | 12/12/2006 |
| 7122065 | Adapter for low volume air sampler An adapter for use with a low volume PUF sampler is described. The adapter is affixed over the open end of a PUF (polyurethane foam) sample cartridge. Sample tubing is affixed to an aperture in the adapter, and the free end of the sample tubing is then positioned at... | 10/17/2006 |
| 7107763 | Ceramic honeycomb filter and exhaust gas-cleaning method A ceramic honeycomb filter comprising a ceramic honeycomb structure having porous partition walls defining a plurality of flow paths, and plugs disposed inside the flow paths such that an exhaust gas passes through pores of the porous partition walls, thereby removi... | 09/19/2006 |
| 7094142 | Portable device with interchangeable air cleaning modules for cleaning the air outside of an existing enclosed space and delivering the cleaned air into the existing enclosed space A portable device that is placed between the ambient air outside an existing enclosed space and the existing enclosed space that pulls the ambient air through an interchangeable array of air cleaning modules and delivers the cleaned air from the air cleaning modules... | 08/22/2006 |
| 7074250 | Air filtration unit An air filtration unit for use in a work environment includes a housing disposed with an air filtration system and light source. The housing includes a handle and corner caps to prevent damage and provide stability. The air filtration system draws air into the housi... | 07/11/2006 |
| 7051540 | Methods for fluid separations, and devices capable of separating fluids Wick-Containing apparatus capable of separating fluids and methods of separating fluids using wicks are disclosed. ... | 05/30/2006 |
| 7037074 | Lightweight, foldable, and replaceable fabric fan blades A ceiling fan assembly is provided having a frame defining a plurality of fan blades, a replaceable one-piece fabric covering attached to the frame, and a frame holder that supports and positions the frame and attaches it to a fan motor. The fabric covering may be u... | 05/02/2006 |
| 7008468 | HEPA vacuum recovery system A vacuum system is enclosed in a housing having two vertically spaced chambers, the lower one enclosing the vacuum generating motor means and the upper chamber defining the vacuum chamber and having therein prefilter and filter means as well as at least two vacuum p... | 03/07/2006 |
| 6997974 | High strength and ultra-efficient oil coalescer A coalescing assembly for coalescing entrained oil from a high temperature, high velocity gas stream comprises a coalescing element of compacted high temperature polyamide fibers, such as those available under the trademark Nomex®, rigidly held by concentric cylind... | 02/14/2006 |
| 6994744 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 02/07/2006 |
| 6966938 | Oil separator for pumps overflowing with oil An oil separator for oil-flooded rotary vane vacuum pumps has a filter housing (10) and a plurality of filter cartridges (14) disposed therein through which the pumping medium flows. The filter cartridges (14) are each inserted through a respect... | 11/22/2005 |
| 6960245 | Filter arrangement and methods A filter arrangement includes a first filter element having opposite first and second ends; an axial length between the first and second ends; and a plurality of flutes. Each of the flutes has a first end portion adjacent to the first filter element first end, and a... | 11/01/2005 |
| 6949188 | Filter assembly having improved sealing features A filter assembly including a filter housing defining an interior chamber with an open end, a filter disposed within the interior chamber, and a cover removably positioned over the open end to enclose the interior chamber. The filter housing defines an axially-facin... | 09/27/2005 |
| 6905529 | Wire Filter cage An improved filter support structure for supporting filter media. The support structure includes two sections removably coupled together with an improved coupling assembly. The first section has a cross section presenting a first width spaced apart from a second wid... | 06/14/2005 |
| 6875247 | Conditions for fluid separations in microchannels, capillary-driven fluid separations, and laminated devices capable of separating fluids Methods of separating fluids using capillary forces and/or improved conditions for are disclosed. The improved methods may include control of the ratio of gas and liquid Reynolds numbers relative to the Suratman number. Also disclosed are wick-containing, laminated ... | 04/05/2005 |
| 6797042 | Pyramid air cleaner A self contained air purification pyramid shaped system and apparatus that can form up to approximately 300 cfm of air flow at high speed, that can remove allergy causing particulates, microorganisms, and odors/chemicals from the air so as to create a healthier envi... | 09/28/2004 |
| 6673136 | Air filtration arrangements having fluted media constructions and methods Filter arrangements include a barrier media in the form of fluted media treated with a deposit of fine fibers. The media is particularly advantageous in high temperature (greater than 140 to 240° F.) systems. Such systems may include engine systems, gas ... | 01/06/2004 |
| 6666910 | Air filtration system and method of use An air filtration system for filtering air drawn into a substantially enclosed environment, such as a room, having an access opening includes a box having sidewalls, a flexible sheet of substantially air-impermeable material sized to cover the access open... | 12/23/2003 |
| 6648947 | Method and apparatus for replacing a filter The present invention provides a method and apparatus for replacing a filter. The apparatus includes a receptacle adapted to receive a filter that is capable of filtering a first area. The apparatus further includes at least one supporting member to suppo... | 11/18/2003 |
| 6645275 | Apparatus and methods for removing fines from a gas stream A bag house is mounted on a portable trailer and has a tube sheet with depending filter bags in part defining a first plenum for receiving a gas stream with fines and a second plenum for receiving clean gas from the filter bags. The fines are collected in... | 11/11/2003 |
| 6572682 | Self-cleaning filter system using direct electrically heated sintered metal fiber filter media A Diesel particulate filter cartridge system for filtering particulate matter and nitrogen oxide from a flow of air containing particular matter includes a filter support plate with a plurality of cylindrical electrically regenerable filter media members ... | 06/03/2003 |
