| 摘要 |
<p>A rectangular tank for a heavy duty hydraulic system which may produce pressure variations within the tank. Stiffeners are bonded to the outer surfaces of the walls; and in addition at least one internal tie rod extends between opposed mounting members on two opposite walls and has threads of opposite hand at its end portions engaged with corresponding threads in the mounting members so that rotation of the tie rod in one direction pushes the opposite walls apart at the mounting members while rotation of the tie rod in the other direction draws the walls toward one another at said mounting members, thus prestressing the walls to any desired extent.</p> |
