LIQUID DISPENSER HAVING IMPROVED OVERFILL PROTECTOR

• US 3,856,058 A
• Filed: 10/26/1973
• Issued: 12/24/1974
• Est. Priority Date: 10/26/1973
• Status: Expired due to Term

• Current Assignee: George E. Fackler
• Original Assignee: George E. Fackler
• Inventors: Fackler, George E.
• Primary Examiner(s): Tollberg, Stanley H.
• Assistant Examiner(s): Shannon, John P.
• Application Number:
  US05/410,290
• Time in Patent Office: 424 Days
• Field of Search: 141/18,198,199,205,115 137/410,390 68/17R,207
• US Class Current: 141/18
• CPC Class Codes: A47L 15/4418 in the form of liquids A47L15/4409, A47L15/4436, A47L15/4445 take precedence

Abstract

A liquid dispenser is provided with a fill fitting and a float actuated valve for closing the fitting during filling of the dispenser. The fill fitting is drained of any liquid therein during placement of a fitting closure in sealing engagement with the fitting.

Claims

1. A liquid dispenser comprising:

a liquid reservoir having a fill fitting providing a well opening into the reservoir;

means for selectively dispensing liquid from the reservoir;

means for closing the fill fitting including a valve and means for constraining movement of the valve in response to rising liquid level in the reservoir into sealing engagement with the fill fitting; and

means for draining the well after the valve is closed including a fitting closure having means for opening the valve in response to closing movement of the closure.

2. The dispenser of claim 1 wherein the valve comprises a float buoyant in the liquid.

3. The dispenser of claim 2 wherein the fitting closure comprises an end projecting through the well opening for engaging and moving the valve away from sealing engagement with the fitting.

4. The dispenser of claim 3 wherein the well and the closure provide therebetween means for securing the closure to the well and sealing the well opening.

5. The dispenser of claim 3 wherein the securing of means comprises non-sealing threads provided by the closure and the well and the sealing means comprises a sealing element for sealing engagement with part of the well.

6. The dispenser of claim 1 wherein the dispensing means includes a chamber having a first port opening into the reservoir and a second port opening to the exterior of the dispenser, means for directing liquid material toward the first port in response to movement of the dispenser from a non-vertical to an upright position for filling the chamber, and means for selectively draining the chamber through the second port, the chamber being upright in the upright position of the dispenser;

the fill fitting being disposed on the dispenser for filling the reservoir in a non-vertical position of the dispenser; and

the sum of the volume of the reservoir in the last mentioned non-vertical position at closing of the valve and the volume of the well being no greater than the sum of the volume of the dispensing chamber and the volume of the reservoir in the upright position below the first port.

7. A liquid dispenser containing a liquid reservoir having a fill fitting providing a well opening into the reservoir;

means mounting the reservoir for movement between a non-vertical fill position and an upright dispensing position;

means for selectively dispensing liquid from the reservoir including a chamber having an inlet opening into the reservoir and an outlet opening to the exterior of the dispenser;

means for filling the chamber in response to reservoir movement from the non-vertical position to the upright position; and

means for selectively draining the chamber in the dispensing position through the outlet opening;

means for closing the fill fitting in the fill position including a valve and means mounting the valve for movement into sealing engagement with the fill fitting in response to a predetermined liquid level in the reservoir; and

means preventing dispensing of a volume of liquid material greater than the volume of the dispensing chamber upon first actuation of the selective draining means, the preventing means being that the volume of the reservoir in the fill position at closing of the valve being no greater than the sum of the volume of the dispensing chamber and the volume of the reservoir in the upright position below the inlet opening.

8. The liquid dispenser of claim 7 further comprising means for draining the well in the fill position after the valve is closed including a fitting closure having means for opening the valve in response to closing movement of the closure, and wherein the preventing means being that the sum of the volume of the reservoir in the fill position at closing of the valve and the volume of the well being no greater than the sum of the volume of the dispensing chamber and the volume of the reservoir in the upright position below the inLet opening.