Patent ID: 11866251
Assignee: OVIVO INC.
Field: Handling (Mechanical engineering)
Classification: CPC B  E | IPC B  E

Claim 0:
1. A rim seal connected between a cover and a concrete tank in a sewage treatment facility, comprising:
a concrete tank rim at periphery of the tank, and a tank cover over an interior of the tank, the tank cover being supported on the tank rim,
a series of radial beams converging and extending angularly upwardly toward a top center of the tank cover, and supporting the tank cover, the radial beams having lower, outer ends terminating near the tank rim,
a structural thrust ring around the periphery of the concrete tank, positioned adjacent to the tank rim and connected to the tank rim, the thrust ring being connected to the outer ends of the radial beams and being positioned to withstand outward forces from the radial beams, and
a flexible membrane mechanically connected in sealed relationship to both the tank cover and the tank rim, thus providing a gas seal between the tank cover and the tank rim while allowing for thermal expansion and contraction.