Title: Filament wound pipe coupling

Abstract: The pipe coupling includes a hollow cylindrical body and pipe registering means projecting radially inward therefrom centrally thereof. The body has a pair of inner annular grooves respectively adjacent opposite ends for the reception of sealing rings. Both the body and the pipe registering means are formed of glass fiber reinforced thermosetting resin and each contains glass filament windings. A plastic film strip between the body and the pipe registering means maintains them separate as the resin of both is cured. Thereafter, any cracking of the pipe registering means will leave the body intact and a good pipe joint will be maintained.

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Inventors: Bennett, Joe B. (Conroe, TX, US)

Application Number: 865561
Filing Date: 1977-12-29
Publication_date: 1980-07-22
Assignee: Owens-Corning Fiberglas Corporation (Toledo, OH)
Primary Class(es): 285/369 156/173, 156/425, 285/383, 285/423
Other Classes:
US Patent Ref:

2751237	Jun, 1956	Conley	285/423.
2878038	Mar, 1959	Noland	285/423.
3179445	Apr, 1965	Moretti	285/369.
3575445	Apr, 1971	French	285/369.
3623930	Nov, 1971	Grosh	156/173.
3733233	May, 1973	Griffiths	156/173.
3765979	Oct, 1973	Thomas	285/423.
4106797	Aug, 1978	Michael	285/423.

Other Refs: 120715013206851365151

Aug, 1959	FR
Jun, 1973	GB
Aug, 1974	GB

Primary Examiner: Callaghan, Thomas F.
Assistant Examiner:
Attorney: Hudgens; Ronald C., Pacella; Patrick P., Rose; Paul J.