|국가/구분||United States(US) Patent 등록|
|국제특허분류(IPC7판)||F04B-005/48 F16L-023/09 E03D-011/00|
|미국특허분류(USC)||285/02 ; 285/015 ; 285/042 ; 285/056 ; 285/059 ; 42/526|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 24 인용 특허 : 5|
A closet flange with a body portion having a tapered end and a plurality of grooves circumferentially disposed about the tapered end. The grooves increase in diameter in the upstream direction and are configured to receive an elastic O-ring. As the closet flange is inserted into a drain pipe the O-ring travels from groove to groove providing an increasingly tighter fit. The flange is installed without tools by pushing the flange into the end of the pipe until the desired tightness is achieved.
[ I claim as my invention:] [1.] A closet flange comprising:a shoulder portion; anda body portion extending from the shoulder portion in a downstream direction and having an outside diameter, the body portion having a plurality of grooves circumferentially disposed about the downstream end of the body portion and configured to accept an elastic O-ring, the O-ring being of sufficient elasticity to travel from groove to groove in a sealing relationship as the closet flange is inserted into a drain pipe.