The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1983
Filed:
Oct. 28, 1981
Lynn W Cook, Fruit Heights, UT (US);
Envirotech Corporation, , US;
Abstract
An improved anaerobic digester 10 includes a cylindrical concrete sidewall 16 having a plurality of guide channel assemblies 40 bolted thereto at uniformly spaced locations along its circumference. The digester further includes a cover 18 adapted to be buoyed upwardly above the surface of the liquid by the digester gas. The digester cover is guided by roller assemblies 70 that cooperate with the guide channel assemblies 40. When gas is not present within the digester, the cover is supported by the cooperation of a plurality of stop tubes 76 and 78 that project radially outwardly of the cover from a thrust ring 24 incorporated at its periphery and a plurality of stop members 60 and 62 that are affixed to the guide channel assemblies at readily accessible locations close to the top of the tank.