The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 1988
Filed:
Jul. 30, 1985
Randall G Richards, Madison, CT (US);
The Drackett Company, Cincinnati, OH (US);
Abstract
The dispenser of the present invention is adapted for placement in a body of liquid, a solution being contained in a vented product chamber of the dispenser, a predetermined volume of said solution being discharged into the body of liquid in response to a lowering of the level of the body of liquid from a first elevation to a second elevation and through a discharge means establishing fluid communication between said product chamber and the body of liquid. In accordance with the present invention, the vent means for the product chamber comprises an inverted U-shaped conduit extending upwardly above the top of the product chamber and hydraulic means adapted to delay the onset of discharge of solution from the product chamber to the body of liquid.