# US 10,441,902 B2 · Strainer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,902 B2 - Document ID: US10441902B2 - Status: Granted - Kind: B2 - Application number: 15/702,115 - Filed: 2017-09-12 - Published: 2018-01-04 - Granted: 2019-10-15 - Earliest claimed: 2015-04-03 - Assignees: Yamashin-Filter Corp. - Applicants: Yamashin-Filter Corp. - Inventors: Takazumi Tange; Hideo Nakaoka; Masanori Wakabayashi - Web page: https://patentgrep.com/patent/US10441902B2 ## CPC - B01D 29/11: with bag, cage, hose, tube, sleeve or like filtering elements - B01D 29/117: {arranged for outward flow filtration (B01D29/23, B01D29/35 take precedence)} - B01D 29/902: {containing fixed liquid displacement elements or cores} - B01D 35/02: Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks, (B01D35/05 takes precedence; {water pipe system filters E03B3/18, E03B7/07; dirt catchers in sewers E03F; filters or strainers for pipe-lines in general B08B, E03F; object or dirt catching devices in sinks or the like E03C1/26; suction strainers or filters for pumps F04B53/005, F04D29/70}) - B01D 53/90: Injecting reactants - F01N 3/2066: {Selective catalytic reduction [SCR]} - B01D 53/9418: {for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas} - B01D 2201/02: Filtering elements having a conical form - B01D 2251/2067: Urea - F01N 2610/02: the substance being ammonia or urea - F01N 2610/1426: Filtration means - Y02T 10/12: Improving ICE efficiencies - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A strainer is provided in an interior of an injection pipe serving as an injection opening through which a liquid containing a reducing agent is injected into a tank body. In the strainer, a front end portion, having a substantially triangular or substantially trapezoidal shape when a cross section is taken along a plane including an axis of a strainer body having a substantially cylindrical shape, is formed integrally with a front end of the strainer body. ## Claims ### Claim 1 A strainer for an injection pipe that serves as an injection opening through which a liquid containing a reducing agent is injected into a tank body, the strainer comprising: a strainer body having a substantially cylindrical shape, wherein the strainer body comprises a first screen portion that allows the liquid to pass through; and a front end portion integrally formed with an end of the strainer body on a side and having a substantially triangular or substantially trapezoidal shape when a cross section is taken along a plane including an axis of the strainer body. ### Claim 2 (depends on 1) The strainer according to claim 1, wherein the front end portion is formed using a material through which the liquid cannot pass and protruding toward a hollow portion of the strainer body. ### Claim 3 (depends on 1) The strainer according to claim 1, wherein the front end portion comprises: a frame formed using a material through which the liquid cannot pass; and a second screen portion formed using a material through which the liquid can pass, and is formed protruding to a side opposite to the strainer body. ### Claim 4 An injection pipe that serves as an injection opening through which a liquid containing a reducing agent is injected into a tank body, the injection pipe comprising a strainer, wherein the strainer comprises: a strainer body having a substantially cylindrical shape, wherein the strainer body comprises a first screen portion that allows the liquid to pass through; and a front end portion integrally formed with an end of the strainer body on a side, and having a substantially triangular or substantially trapezoidal shape when a cross section is taken along a plane including an axis of the strainer body. ### Claim 5 (depends on 4) The injection pipe according to claim 4, wherein the front end portion is formed using a material through which the liquid cannot pass and protruding toward a hollow portion of the strainer body. ### Claim 6 (depends on 4) The injection pipe according to claim 4, wherein the front end portion comprises a frame formed using a material through which the liquid cannot pass; and a second screen portion formed using a material through which the liquid can pass, and is formed protruding to a side opposite to the strainer body.