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. 30, 2003
Filed:
Jul. 14, 2000
Jong Sun Kim, Kyonggi-do 420-112, KR;
Other;
Abstract
An apparatus for preventing reverse flows in a drainage is disclosed. In this apparatus, a floating device ( ) and a reverse flow preventing device ( ) act mutually in opposite directions owing to the floating force and the water pressure, and thus the bottom of the round body ( ) of the apparatus is automatically opened and closed, so that the drainage can efficiently work, and the waste water and the draining water with foul odors can be prevented from flowing reversely. The apparatus for preventing reverse flows of waste water according to the present invention includes a round body ( ) to be installed in a drain hole ( ). A guide member ( ) is installed on a second filtering net ( ) of the top of the round body ( ), and has a guide ( ) at the center of it. An openable/closable device actuating member ( ) is insertingly installed on the guide member ( ), for moving up and down along the guide ( ) owing to the floating force and the self-gravity. An openable/closable member ( ) is installed on the guide member ( ), for causing an air-tight sealing part to be opened and closed by being oppositely interlocked to the openable/closable device actuating member ( ).