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:
Sep. 02, 1997
Filed:
Dec. 19, 1995
Stanley R Pickens, Monroeville, PA (US);
Paul T Rice, Sewickley, PA (US);
Richard H Ferguson, New Martinsville, WV (US);
PPG Industries, Inc., Pittsburgh, PA (US);
Abstract
Describes apparatus for dispensing a sanitizing chemical into a swimming pool. The apparatus is a container having a closed bottom, a lid with a dispensing opening, and a plate with colored markings that is larger than the dispensing opening and freely moveable vertically resting on the bottom of the container. The plate has a specific gravity of less than 1.0. In operation, the container is filled with solid sanitizing chemical, e.g., calcium hypochlorite, and placed in a skimmer basket associated with the pool. When the sanitizing chemical is completely dissolved by water pumped through the skimmer basket and recycled to the pool, the plate floats to the top of the container where it can be observed readily to indicate that the apparatus needs to be refilled with sanitizing chemical.