Pipe or the like, a female end ring, and a method of...

Details Pipe or the like, a female end ring, and a method of... Pipe or the like, a female end ring, and a method of...

2005-02-15

2005-02-15

Hewitt, James M. (Department: 3679)

Pipe joints or couplings

Flexible joint, rigid members

Concrete, clay, or masonry pipe

C285S231000, C285S235000, C285S332200, C285S332300, C285S347000, C285S369000, C285S417000

Reexamination Certificate

active

06854770

ABSTRACT:
A pipe formed from a concrete cylinder has an end ring with a ferrule which can be snuggly mounted on one end of the pipe and a skirt axially adjacent to the ferrule for receiving a mail endpiece of another pipe. The ferrule is expanded as it is mounted on the cylinder and exerts a compressive force against the outer peripheral face of the cylinder for forming a secure seal. A rib may be disposed on an inner annular surface of the ferrule and an adhesive may be applied for enhancing the seal between the cylinder and the ferrule.

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