US 5,901,717 A · Liquid waste disposal and canister flushing system and method

Abstract

A liquid waste disposal and canister flushing system includes a cabinet with a sink for receiving the canister and a subsink for receiving a lower portion thereof. The subsink is connected to a drain line. A plunger subassembly includes a stopper which functions as a drain valve for the canister. An injection jet is connected to water and cleaning solution sources and discharges diluted cleaning solution into the canister for flushing same. The injection jet engages the plunger subassembly for ejecting the stopper from a canister drain opening. A control system includes a programmable microprocessor which can be programmed to provide drain and flush cycles of predetermined duration. A number of different container and accessory embodiments are disclosed. A method of liquid waste disposal and canister flushing utilizes the microprocessor for delaying the flush cycle until completion of the drain cycle. The control system can provide drain and flush cycles of predetermined durations, can monitor water pressure, flow rate and temperature, cleaning solution flow rate, holding tank neutralizer inputs and timing and other system parameters.

Claims21

Dependent claims

A canister usable with a liquid waste disposal and canister flushing system, said flushing system including a source of cleaning fluid under pressure and a cabinet including a subsink, said canister comprising:

(a) a container with an open top and a closed bottom portion which is insertable in said subsink, a drain opening formed in said closed bottom, said container also including a peripheral flange extending outwardly from said open top;
and
(b) a lid removably attachable to the open top of said container in covering relation with said open top, said lid including an accessory port sized to accommodate a flush jet and having an outwardly extending peripheral receiver portion which is shaped and sized to mate with the peripheral flange on the container such that said accessory port is aligned with said drain opening when said lid is attached to said container.

(a) a container with an open top and a closed bottom portion which is insertable in said subsink, a drain opening formed in said closed bottom;
(b) a lid removably attachable to the open top of said container in covering relation with said open top, said lid including an accessory port sized to accommodate a flush jet adapter;
(c) a flush jet adapter including a fluid passage and at least one jet port, said adapter including an elongate body with a longitudinal slot formed therein;
and wherein
(d) said accessory port in said lid has an open top and includes an accessory tab extending inward into said accessory port, said slot on said flush jet adapter mating with said accessory tab when said flush jet adapter is inserted into said accessory port such that said jet port is correctly positioned to direct a cleaning jet into said container for optimum cleaning effect.

2 more elements

Dependencies are inferred from the claim text.

Liquid waste disposal and canister flushing system and method

Life of this patent

Liquid waste disposal and canister flushing system and method

Life of this patent

Abstract

Claims21