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:
Jan. 06, 1987
Filed:
Aug. 28, 1985
Daniel R Morrison, Key Biscayne, FL (US);
Ross J Petrie, Ft. Lauderdale, FL (US);
Kenneth D Savage, Key Biscayne, FL (US);
Other;
Abstract
An object of this invention is to provide an emergency drain for units such as air conditioners and the like, operative to collect fluid and shut off the unit when the primary drain for the unit becomes obstructed, thus protecting against damage due to overflow of the fluid, and wherein a low pressure is produced in the drain for evacuating fluid from the drain pan of the unit. Another object is to provide a one-way valve in the drain from an air conditioner or other appliance, whereby reverse flow of air or other fluid from the drain to the unit is prevented. The emergency drain comprises a fitting (11) mounted in the drain pan (14), with a primary drain opening (16) and a secondary or emergency drain opening (17) for draining away fluid accumulated in the pan when the primary drain becomes blocked. A one-way valve (37) is provided in the drain for preventing back flow of air or other fluids from the drain to the pan, and a venturi (39) is positioned in the drain pan (14) to produce a low pressure from the flow of air circulated by the air conditioner fan. A tube (38) connects the venturi with a reservoir (22) which collects the fluid drained by the emergency drain (17), whereby the fluid is evacuated through the emergency drain.