U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method of replacing plumbing

Patent 4038737 Issued on August 2, 1977. Estimated Expiration Date: Icon_subject August 2, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

180639

1389608

2866981

3148690

3516694

Inventor

Application

No. 05/610863 filed on 09/05/1975

US Classes:

29/890.14, Gas and water specific plumbing component making138/97, REPAIRING285/15, REPAIR285/236, Clamped285/56, WATER CLOSET TYPE, FLOOR-SUPPORTED29/402.08, Replacing of defective part29/402.14, Mechanically attaching preform by separate fastener29/525.04, At least one part is nonmetallic29/525.05, Fastener deformed after application29/525.09, At least one part nonmetallic29/890.141, Plumbing fixture making4/211House plumbing

Examiners

Primary: Moon, Charlie T.

Attorney, Agent or Firm

Abstract

A method and apparatus for installing or replacing pipe which extends between a toilet and a ferrule structure projecting from a soil stack (or other points in a sewage system) does not require replacing the caulked oakum and lead (Pb) joint which seals the ferrule structure to the soil stack. The method couples a discharge pipe to the ferrule structure with a compressible sleeve which extends over facing ends of the discharge pipe and ferrule. Ring clamps compress and seal the sleeve to the discharge pipe and ferrule structure. Ears project from a flange attached to one end of the discharge pipe at a floor which supports the toilet for supporting the discharge pipe from the floor. A nipple may be inserted into the discharge pipe for attaching another pipe intermediate ends of the discharge pipe. A shield extends about the nipple and conforms to the outside of the discharge pipe to aid in adhesively sealing the nipple to the discharge pipe.

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