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:
Oct. 21, 2025
Filed:
Feb. 24, 2022
Evac Oy, Espoo, FI;
Timothy W. Monson, Winnebago, IL (US);
Matthew A. Wales, Beloit, WI (US);
EVAC OY, Espoo, FI;
Abstract
The invention relates to a buffer box of a vacuum drainage system, which vacuum drainage system comprises the buffer box, which buffer box comprises as an outer frame structure side walls, end walls, a top wall and a bottom wall and which buffer box further comprises at least one inlet and an outlet, a vacuum drainage piping, at least one collection branch connected to the vacuum drainage system and to the outlet of the buffer box, wherein each of the collection branches comprises a suction valve, a pump connected to the vacuum drainage piping and configured to create negative pressure in the vacuum drainage piping. The buffer box comprises at least two compartments, which comprise a main compartment and a suction compartment with a suction outlet. Between the main compartment and the suction compartment a baffle is located. The baffle extends from the top wall towards the bottom wall and is located at a distance from the bottom wall such that a baffle opening is formed between the main compartment and the suction compartment. The baffle is configured to prevent the air on top of the liquid in the main compartment to enter the suction compartment.