# US 10,308,108 B2 · Working machine > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,308,108 B2 - Document ID: US10308108B2 - Status: Granted - Kind: B2 - Application number: 15/084,489 - Filed: 2016-03-30 - Published: 2016-10-06 - Granted: 2019-06-04 - Earliest claimed: 2015-03-30 - Assignees: Kubota Corporation - Applicants: Kubota Corporation - Inventors: Keigo Honda; Hiroaki Nakagawa; Daisuke Sakurai; Hiroshi Fujiwara - Web page: https://patentgrep.com/patent/US10308108B2 ## CPC - B60K 13/04: concerning exhaust - E02F 9/0883: {Tanks, e.g. oil tank, urea tank, fuel tank (for vehicles in general B60K15/00)} - B60K 15/03006: {Gas tanks (B60K15/07 takes precedence)} - B60Y 2200/41: Construction vehicles, e.g. graders, excavators - B60Y 2200/415: Wheel loaders - E02F 3/3414: {the arms being pivoted at the rear of the vehicle chassis, e.g. skid steer loader} - F01N 2610/02: the substance being ammonia or urea - F01N 2610/1406: Storage means for substances, e.g. tanks or reservoirs - Y02T 10/12: Improving ICE efficiencies - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - E02F: DREDGING; SOIL-SHIFTING (winning peat E21C49/00) - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - 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 machine body has a front-rear direction and a right-left direction perpendicular to the front-rear direction. The machine body has right and left sides in the right-left direction. A cabin is mounted in the machine body between the right and left sides. Right and left traveling devices are arranged respectively on the right and left sides of the machine body. A boom has a front end part in the front-rear direction to be connected to a working tool. A first wall is provided on one side of the boom in the right-left direction. A second wall is provided on another side opposite to the one side with respect to the boom in the right-left direction. A urea aqueous solution tank is provided between the first and second walls to store a urea aqueous solution. ## Claims ### Claim 1 A working machine comprising: a machine body having a front-rear direction and a right-left direction perpendicular to the front-rear direction, the machine body having a right side and a left side opposite to the right side in the right-left direction; a cabin mounted in the machine body between the right side and the left side; a right traveling device arranged on the right side of the machine body; a left traveling device arranged on the left side of the machine body; a boom having a front end part in the front-rear direction, the front end part being to be connected to a working tool; a first wall provided on a first side of the boom in the right-left direction; a second wall provided on a second side opposite to the first side with respect to the boom in the right-left direction; a third wall connecting the first wall and the second wall; a fourth wall provided opposite to the third wall in the front-rear direction; a urea aqueous solution tank provided between the first wall and the second wall and between the third wall and the fourth wall to store a urea aqueous solution; and a fifth wall provided between the third wall and the fourth wall on a front side of the urea aqueous solution tank in the front-rear direction. ### Claim 2 (depends on 1) The working machine according to claim 1, wherein the boom has a rear end part opposite to the front end part of the boom in the front-rear direction, the working machine further comprising: a lift link connected to the rear part of the boom to rotatably support the boom, the first wall being provided on the first side of the lift link, the second wall being provided on the second side of the lift link. ### Claim 3 (depends on 2) The working machine according to claim 2, wherein the machine body has an up-down direction perpendicular to the front-rear direction and to the right-left direction, the urea aqueous solution tank has a urea aqueous solution tank main body to store the urea aqueous solution, the urea aqueous solution tank main body has an upright length in the up-down direction and a front-rear length in the front-rear direction, the upright length being greater than the front-rear length, and the urea aqueous solution tank main body is provided on a rear side of the lift link in the front-rear direction. ### Claim 4 (depends on 1) The working machine according to claim 1, further comprising: a boom cylinder connected to the boom to lift and lower the boom, the first wall being provided on the first side of the boom cylinder, the second wall being provided on the second side of the boom cylinder. ### Claim 5 (depends on 4) The working machine according to claim 4, wherein the machine body has an up-down direction perpendicular to the front-rear direction and to the right-left direction, the urea aqueous solution tank has a urea aqueous solution tank main body to store the urea aqueous solution, the urea aqueous solution tank main body has an upright length in the up-down direction and a front-rear length in the front-rear direction, the upright length being greater than the front-rear length, and the urea aqueous solution tank main body is provided on a rear side of the boom cylinder in the front-rear direction. ### Claim 6 (depends on 1) The working machine according to claim 1, wherein the second wall, the third wall, and the fifth wall define an installment portion in which the urea aqueous solution tank is installed. ### Claim 7 (depends on 1) The working machine according to claim 1, wherein the first wall, the second wall, the third wall, and the fifth wall define an installment portion in which the urea aqueous solution tank is installed. ### Claim 8 (depends on 1) The working machine according to claim 1, further comprising: an engine mounted in the machine body; and a fuel tank mounted in the machine body and comprising: a fuel tank main body to store fuel to be supplied to the engine; and a first feeding pipe having a first feeding port from which the fuel is fed to the fuel tank main body through the first feeding pipe, wherein the urea aqueous solution tank comprises a urea aqueous solution tank main body to store the urea aqueous solution, and a second feeding pipe having a second feeding port from which the urea aqueous solution is fed to the urea aqueous solution tank main body through the second feeding pipe, both of the first feeding port and the second feeding port being provided on the right side or the left side of the machine body. ### Claim 9 (depends on 1) The working machine according to claim 1, further comprising: a bottom plate provided between the first wall and the second wall, the urea aqueous solution tank being disposed on the bottom plate. ### Claim 10 (depends on 9) The working machine according to claim 9, wherein the urea aqueous solution tank has a discharge portion from which the urea aqueous solution is discharged, and the bottom plate has an opening portion opposite to the discharge portion and has a lid plate to close the opening portion. ### Claim 11 (depends on 10) The working machine according to claim 10, wherein the bottom plate has an annular edge portion defining the opening portion. ### Claim 12 (depends on 1) The working machine according to claim 1, wherein the boom is provided on at least one side of the cabin in the right-left direction. ### Claim 13 A working machine comprising: a machine body having a front-rear direction and a right-left direction perpendicular to the front-rear direction, the machine body having a right side and a left side opposite to the right side in the right-left direction; a cabin mounted in the machine body between the right side and the left side; a right traveling device arranged on the right side of the machine body; a left traveling device arranged on the left side of the machine body; a boom having a front end part in the front-rear direction, the front end part being to be connected to a working tool; a first wall provided on a first side of the boom in the right-left direction; a second wall provided on a second side opposite to the first side with respect to the boom in the right-left direction; a bottom plate provided between the first wall and the second wall; and a urea aqueous solution tank being provided on the bottom plate between the first wall and the second wall to store a urea aqueous solution, the urea aqueous solution tank having a discharge portion from which the urea aqueous solution is discharged, the bottom plate having an opening portion opposite to the discharge portion and having a lid plate to close the opening portion. ### Claim 14 (depends on 13) The working machine according to claim 13, further comprising: a third wall connecting the first wall and the second wall; a fourth wall provided opposite to the third wall in the front-rear direction, the urea aqueous solution tank being provided between the third wall and the fourth wall. ### Claim 15 (depends on 14) The working machine according to claim 14, further comprising: a fifth wall provided between the third wall and the fourth wall on a front side of the urea aqueous solution tank in the front-rear direction. ### Claim 16 (depends on 13) The working machine according to claim 13, wherein the machine body has an up-down direction perpendicular to the front-rear direction and to the right-left direction, the urea aqueous solution tank has a urea aqueous solution tank main body to store the urea aqueous solution, the urea aqueous solution tank main body has an upright length in the up-down direction and a front-rear length in the front-rear direction, the upright length being greater than the front-rear length, and the urea aqueous solution tank main body is provided on a lower side of the boom in the up-down direction. ### Claim 17 (depends on 13) The working machine according to claim 13, wherein the boom is provided on at least one side of the cabin in the right-left direction. ### Claim 18 (depends on 13) The working machine according to claim 13, wherein the bottom plate has an annular edge portion defining the opening portion. ### Claim 19 A working machine comprising: a machine body having a front-rear direction and a right-left direction perpendicular to the front-rear direction, the machine body having a right side and a left side opposite to the right side in the right-left direction; an engine mounted in the machine body; a cabin mounted in the machine body between the right side and the left side; a right traveling device arranged on the right side of the machine body; a left traveling device arranged on the left side of the machine body; a boom having a front end part in the front-rear direction, the front end part being to be connected to a working tool; a first wall provided on a first side of the boom in the right-left direction; a second wall provided on a second side opposite to the first side with respect to the boom in the right-left direction; a fuel tank mounted in the machine body and comprising: a fuel tank main body to store fuel to be supplied to the engine; and a first feeding pipe having a first feeding port from which the fuel is fed to the fuel tank main body through the first feeding pipe; and a urea aqueous solution tank provided between the first wall and the second wall to store a urea aqueous solution, the urea aqueous solution tank comprising: a urea aqueous solution tank main body to store the urea aqueous solution; and a second feeding pipe having a second feeding port from which the urea aqueous solution is fed to the urea aqueous solution tank main body through the second feeding pipe, both of the first feeding port and the second feeding port being provided on the right side or the left side of the machine body. ### Claim 20 (depends on 19) The working machine according to claim 19, wherein the boom is provided on at least one side of the cabin in the right-left direction.