Patent ID: 7631659

Claim:
A fluid tank with a base section ( 26 ) defined by a tank floor ( 22 ) and an intermediate plane ( 24 ), situated above the tank floor ( 22 ) and a domed section ( 28 ), situated above the intermediate plane ( 24 ) and communicating with the base section ( 26 ), wherein the base section ( 26 ) and the dome section ( 28 ) are in the form of separate hollow sections, wherein the base section is at least partially covered over by a cover ( 64 ) above the intermediate plane ( 24 ), wherein the dome section ( 28 ) includes on its lower side a floor ( 66 ), wherein the dome section ( 28 ) is seatable with its floor ( 66 ) upon the cover ( 64 ) of the base section ( 26 ), wherein the cover ( 64 ) of the base section ( 26 ) and the floor ( 66 ) of the dome section ( 28 ) respectively are provided with at least one through hole ( 70 , 70 ′; 72 , 72 ′) which pair-wise align with each other to form a through opening and which are bordered by coupling rims ( 74 , 74 ′; 76 , 76 ′) engaging form-fitting in each other, wherein said tank is adapted for use as a water tank for mobile concrete pumps, wherein a concrete delivery pipe ( 16 ) extends through a space ( 92 ) between the dome section ( 28 ) and the tower part ( 30 ) of the water tank, and wherein the base section ( 26 ) with its cover ( 64 ) carrying part is pushed through below a concrete conveyance pipe ( 16 ) of a concrete pump mounted on a vehicle chassis ( 10 ) and is secured to the vehicle chassis, and that subsequently the dome section ( 28 ) is seated with its floor ( 66 ) upon the cover ( 64 ) of the base section ( 26 ) and is screwed thereto in the area of the coupling rims ( 74 , 74 ′, 76 , 76 ′) in the inside of the fluid container.