LIQUID LEVEL CONTROL DEVICE

• US 3,729,013 A
• Filed: 03/01/1971
• Issued: 04/24/1973
• Est. Priority Date: 03/17/1969
• Status: Expired due to Term

• Current Assignee: Diversey Wyandotte Corporation
• Original Assignee: Howard L. Anderson
• Inventors: Anderson, Howard L.
• Primary Examiner(s): Nilson, Robert G.
• Application Number:
  US05/119,901
• Time in Patent Office: 785 Days
• Field of Search: 137/91,92,93 68/17R
• US Class Current: 137/93
• CPC Class Codes: G01F 23/247 for discrete levels
• CPC Class Codes: G01F 23/64 of the free float type without mechanical transmission elements
• CPC Class Codes: G05D 9/12 characterised by the use of electric means
• CPC Class Codes: Y10T 137/2509 By optical or chemical property

Abstract

A liquid level control device, adapted for use with apparatus for dispensing fluid from a reservoir to a drum or tank, that includes a conduit and an electrical relay encased in a tubular housing and disposed in the reservoir. The conduit is operable to deliver a stored fluid from the reservoir to the drum of a dispensing machine or the like and the relay is responsive to the level of liquid in the reservoir and connected to means for indicating when the liquid falls below a desired level.

Claims

1. In apparatus for dispensing a fluid from a reservoir to a tank, the combination comprising:

a. a support means seated on said reservoir;

b. a casing disposed in said reservoir and having one end connected to said support means and its opposite end terminating near the bottom of said reservoir;

c. a conduit having one end connected to said tank and having its opposite end extending through said support means and said casing, and terminating substantially coplanar with said opposite end of said casing;

d. a normally open relay positioned within said casing adjacent said conduit;

e. means associated with said relay for indicating when the level of said fluid in said reservoir falls below a predetermined level;

f. sensing means to determine fluid concentrations in said tank; and

g. pumping means, positioned in said conduit intermediate said tank and said reservoir, responsively connected to said sensing means and operable to deliver said fluid from said reservoir to said tank in response to a signal from said sensing means.

2. In combination with a dispensing machine or the like, a system for dispensing a liquid from a reservoir to a tank comprising:

a. a support means removably seated on said reservoir;

b. a casing disposed in said reservoir and having one end connected to said support means and having its opposite end terminating near the bottom of said reservoir;

c. a conduit having one end connected to said tank and having its opposite end extending through said support means and said casing and terminating substantially coplanar with the lower end of said casing;

d. a normally open relay positioned in said casing adjacent said opposite end of said conduit;

e. means slidably mounted on said casing and being movable between a first position and a second position whereby said relay is closed when said means is in said second position;

f. sensing means associated with said tank to determine product Concentration therein;

g. pumping means responsively connected to said sensing means and operable to deliver said liquid from said reservoir to said tank in response to a signal from said sensing means; and

h. an indicator electrically connected to said relay and actuated when said slidable means is in said second position.