US Patent 11435082 Fuel supply device

A fuel supply device includes: an outer tubular member; an inner tubular member inside the outer tubular member; and a flow distribution portion on an inner surface of the outer tubular member or an outer surface of the inner tubular member, wherein the flow distribution portion includes first and second distribution wall portions arranged apart from one another in an axial direction of the inner tubular member, the first distribution wall portion includes first individual wall portions spaced apart from one another along a first circumference of the inner tubular member, the second distribution wall portion includes second individual wall portions spaced apart from one another along a second circumference of the inner tubular member, at least some of the first individual wall portions are arranged to face spaces between at least some of the second individual wall portions, respectively, in the axial direction of the inner tubular member.