×

Liquid level sensor with odor reduction for waste holding tanks

  • US 20050189275A1
  • Filed: 03/01/2004
  • Published: 09/01/2005
  • Est. Priority Date: 03/01/2004
  • Status: Abandoned Application
First Claim
Patent Images

1. A sensor for use in detecting the level of liquid in a waste holding tank, comprising:

  • a pressure sensor, an aeration tube, and a supply of air, said pressure sensor being disposed on the aeration tube;

    said aeration tube being disposed in a holding tank, with one end outside the tank and connected to an air supply tube connected to an air pump, the other end of the aeration tube being disposed inside the holding tank as close to the bottom of the holding tank as possible;

    said supply of air being substantially continuously supplied via an air supply tube connected to an air pump, wherein;

    measurement of air pressure in said aeration tube, using said pressure sensor, is used to determine liquid level in said holding tank.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×