Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7608121 | HVAC system with moving filter An endless filtering sheet, having an interior entrained about rollers, extends in a path of movement over an air inlet in a housing for receiving air flow and presents an exterior from which dirt and debris collected from the incoming air flow and which dirt and de... | 10/27/2009 |
| 7410529 | Filter service system and method According to an exemplary embodiment of the present disclosure, a system for removing matter from a filtering device of a work machine includes a gas pressurization assembly. An element of the gas pressurization assembly is removably attachable to a first orifice of... | 08/12/2008 |
| 7396389 | Abnormality detection apparatus for exhaust gas purification apparatus for internal combustion engine Unless an abnormality exists in piping introducing a pressure from front and rear of DPF 22 into a differential pressure sensor 45, pulsations of pressure propagation through an exhaust passage 21 is offset in a detection value of a pressure dif... | 07/08/2008 |
| 7393377 | Honeycomb filter and exhaust gas treatment apparatus In a honeycomb filter in which a plurality of cells are formed by porous partition walls, and a predetermined cell whose one end portion is plugged, and a remaining cell whose other end portion is plugged are alternately arranged in such a manner as to form checked ... | 07/01/2008 |
| 7393386 | Exhaust aftertreatment filter with residual stress control An exhaust aftertreatment filter has a pre-stressed layer bonded to the filter body at the outer periphery and compressively axially pre-stressed in an opposite axial direction to separational axial tensile stress to counteract the latter during regenerative heating... | 07/01/2008 |
| 7390338 | Method and apparatus for regenerating engine exhaust filters Internal combustion engine exhaust filter devices and the like are regenerated by placement in a reclamation or burn-off furnace, raising the temperature to at least about 800° F. to 900° F. and conducting relatively low volumes of low pressure air through the fil... | 06/24/2008 |
| 7387657 | Honeycomb structural body A honeycomb structural body is constituted with a ceramic block comprising a plurality of through-holes arranged in a longitudinal direction and separated from each other through partition walls, either end portions of which through-holes being sealed. The ceramic b... | 06/17/2008 |
| 7384441 | Honeycomb filter There is provided a honeycomb filter obtained by bonding, into one piece, a plurality of honeycomb segments comprising partition walls having filtering function, and a number of through-holes divided from each other by the partition walls and extending in an axial d... | 06/10/2008 |
| 7357822 | Filter control apparatus In order to calculate an estimation of the quantity of accumulated particulates in a filter (32), a first estimation calculation unit (100) that outputs first estimation data (XA) calculated from the filter before and after differential pressure, and a... | 04/15/2008 |
| 7341614 | Filter and filter assembly The invention provides a filter that has a plurality of through holes and satisfies the expression 2.5×A/B+52.5≦C≦2.5×A/B+60.2 (A≦20, 0 | 03/11/2008 |
| 7332016 | Particulate trap with selective blocking element A particulate trap has a housing with an inlet and an outlet. The particulate trap also has a plurality of fluidly isolated filters stacked within the housing, between the inlet and the outlet. The stacked plurality of filters have a stack direction and a transverse... | 02/19/2008 |
| 7329300 | Honeycomb structure, method of manufacturing the same, and discharge fluid purification system A honeycomb structure includes partition walls arranged so as to form a plurality of cells extending to an other-end portion from a one-end portion through an axial direction. There are provided a honeycomb structure including a partition wall having a different hei... | 02/12/2008 |
| 7326264 | Plasma particulate filter A method for reducing the particulate emissions containing carbon of diesel motors uses surface discharges to regenerate a filter. An appropriate wall flow filter is configured from alternately closed longitudinal channels. The electrodes are embedded in the filter ... | 02/05/2008 |
| 7326271 | Honeycomb filter and method of manufacturing the same A honeycomb filter 1 includes a cylindrical honeycomb structure 2 having a plurality of cells 4, and plugging members 7 disposed to alternately plug openings 5 of predetermined cells 4a on the side of one end face ... | 02/05/2008 |
| 7316722 | Honeycomb structure An object of the present invention is to provide a honeycomb structural body (filter) which has a low pressure loss upon collecting particulates, makes it possible to deposit a great amount of particulates and ashes, and is less likely to produce cracks. The columna... | 01/08/2008 |
| 7314496 | Honeycomb structure A honeycomb structural body which is capable of increasing the limiting collection amount of particulate, reducing the pressure loss in use, and reducing fluctuations in the pressure loss even if the flow rate from an internal combustion engine of exhaust gases fluc... | 01/01/2008 |
| 7314501 | Methods and device for filtration of exhaust gases for a diesel engine with a filtration surface which is variable by means of controlled obstruction A method in which all or some of the particles contained in the exhaust gases of a diesel engine are retained on particle filters and burnt due to the action of a combustion catalyst. At least a part of the particle filters are obstructed when the temperature θg of... | 01/01/2008 |
| 7311750 | Filter, method of manufacturing the same, and exhaust gas purification device Ceramic particles, fine particles having smaller average particle diameter smaller than that of the ceramic particles and a reduction-resistant material are mixed to obtain a puddle. The reduction-resistant material is a material that is reduced by carbon at a highe... | 12/25/2007 |
| 7311749 | Filter block for filtering particles contained in the exhaust gas of a combustion engine A filter block for filtering particles contained in the exhaust gas of an internal combustion engine includes a plurality of channels for the circulation of the gas, a channel defined by a wall provided with a filtering zone and which opens out towards the outside v... | 12/25/2007 |
| 7309371 | Narrow pore size distribution cordierite filters with reduced pressure drop A diesel particulate filter having a honeycomb body composed of cordierite and exhibiting a CTE (25-800° C.) of less than 13×10−7/° C.; a median pore diameter, d50, of less than 25 μm; % porosity not less than 53%; and a narrow pore size ... | 12/18/2007 |
| 7309370 | Honeycomb filter for exhaust gas decontamination A honeycomb filter for purifying exhaust gases, which makes it possible to alleviate a thermal stress generated due to occurrence of a local temperature change, is less likely to generate cracks, and is excellent in strength and durability. The honeycomb filter has ... | 12/18/2007 |
| 7303603 | Diesel particulate filter system with meta-surface cavity A diesel particulate filter including a microwave-absorbing target housed within a waveguide cavity lined along the walls with a hard-electromagnetic surface (HES). The HES modifies specific electromagnetic boundary conditions for a given design frequency so as to e... | 12/04/2007 |
| 7303602 | Diesel particulate filter using micro-wave regeneration A diesel particulate filter including a microwave-absorbing target within a waveguide cavity. The cavity accepts microwave-frequency electromagnetic radiation through input couplers 90 degrees out of phase with each other to excite circular polarization heating mode... | 12/04/2007 |
| 7276101 | Honeycomb structure, method of manufacturing the same, die for forming, and discharge fluid purification system A honeycomb structure includes partition walls arranged in an X-direction and intersecting partition walls so as to form a plurality of cells extending to an other-end portion from a one-end portion through an axial direction. There are disclosed a honeycomb structu... | 10/02/2007 |
| 7267703 | Electrically regeneratable filter element An electrically regeneratable filter element comprises at least two flanks, each of these flanks comprising a stiff material layer. Each of these flanks has at least one thermally and electrically insulated side. The filter element comprises further a metal fiber fl... | 09/11/2007 |
| 7264642 | Exhaust gas cleaning apparatus In an exhaust gas cleaning apparatus (30) in which a before and after differential pressure (ΔP) of a filter (32) used to trap particulates is detected for regeneration of the filter (32), a time at which, during filter regeneration, the temper... | 09/04/2007 |
| 7247190 | Engine exhaust gas cleaning apparatus An engine exhaust gas cleaning apparatus is provided to minimize torque shock as during regeneration of an exhaust gas cleaning device. The engine exhaust gas cleaning apparatus comprises a fuel delivery device that delivers fuel to an engine at a lean excess air ra... | 07/24/2007 |
| 7208029 | Exhaust gas cleaning system An exhaust gas cleaning system is provided that comprises a particulate filter and an NOx trapping catalytic converter disposed upstream of the particulate filter. The exhaust gas cleaning system is configured to determine a combustion amount of the particulate matt... | 04/24/2007 |
| 7189274 | Exhaust gas filter with at least one filter layer and method for producing a filter layer An exhaust gas filter for cleaning an exhaust gas of an internal combustion engine includes at least one strip-shaped filter layer made of a material through which a fluid can at least partly flow. The filter layer has a length in a longitudinal direction and a widt... | 03/13/2007 |
| 7179316 | Cordierite filters with reduced pressure drop A diesel particulate filter comprising a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof, wherein the filter exhibits a... | 02/20/2007 |
| 7175681 | Apparatus for removing fine particles in exhaust gas The present invention provides a fine particle removing apparatus which can efficiently burn collected fine particles in exhaust gas, has a simple configuration and can be readily controlled. In this fine particle removing apparatus, a filter unit which collects fin... | 02/13/2007 |
| 7169200 | Particulate trap A particulate trap has a plurality of filters and an air distributor. The air distributor has an inner tube and an outer tube. Each of the inner and outer tubes have a plurality of openings to allow exhaust flow to the plurality of filters. One of the inner and oute... | 01/30/2007 |
| 7169203 | Honeycomb structure There is disclosed a honeycomb structure comprising a plurality of honeycomb segments (12), bonded into one piece, having an outer peripheral wall (8), cell walls (2) disposed inside the outer peripheral wall, and a large number of cells (3 | 01/30/2007 |
| 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 |
| 7153336 | Exhaust gas purifying apparatus, particulate filter and manufacturing method thereof This invention relates to an exhaust gas purifying apparatus having a particulate filter for collecting particulates in exhaust gas. This particulate filter (22) contains partition walls defining paths (50, 51) in which exhaust gas flows. This partitio... | 12/26/2006 |
| 7153342 | Exhaust gas purifying system of internal combustion engine An exhaust gas purifying system of a diesel engine comprises a PM filter installed in an exhaust passage line of the engine to collect particulate matter (PM) in the exhaust gas from the engine; a pressure difference sensor for detecting a pressure difference betwee... | 12/26/2006 |
| 7147688 | Engine exhaust gas purification device A map which defines a relationship of an exhaust gas pressure P2 at the outlet of a filter (13) to a load Q and rotation speed Ne of an engine (1) is prepared, and an exhaust gas pressure P1 at the inlet to the filter (13) is deter... | 12/12/2006 |
| 7147039 | Air routing device for a motor vehicle air conditioning or heating system An air routing device for a motor vehicle air conditioning and/or heating system, comprising an air routing housing on which a blower is arranged, wherein the air routing device is formed separately from the air routing housing and can be pushed into the air routing... | 12/12/2006 |
| 7147693 | Engine exhaust gas purification device An engine exhaust gas purification device is disclosed. The purification device has a filter (13) which traps particulate matter contained in the exhaust gas from an engine; a differential pressure detection sensor (16) which detects a differential pre... | 12/12/2006 |
| 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 |