Patent ID: 6467497
Filing Date: 2002-10-22
Classification: E03F,Y10T

Abstract:
A buffer box for use in a vacuum collection system having a drainage pipe maintained under partial vacuum pressure, a suction valve for selectively controlling access to the drainage pipe, and a collection pipe having an inlet adapted to collect waste fluid from a waste fluid source, the buffer box comprising:a base; a side wall extending upwardly from the base; a cover attached to the side wall so that an interior of the base, side wall, and cover define a reservoir; an inlet fluidly communicating between the collection pipe and the reservoir; an outlet formed in the side wall adapted to fluidly communicate with the suction valve; and an air intake orifice integrally provided with the buffer box and fluidly communicating between the reservoir and atmosphere; wherein waste fluid collecting in the reservoir is transported to the drainage pipe when the suction valve actuates to an open position.