|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||285/55 ; 285/14 ; 285/363 ; 285/917|
|우선권정보||GB-0051575 (1975-12-17); GB-0000773 (1976-01-09)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 7 인용 특허 : 1|
The invention relates to means and methods for rendering fire-safe, or more fire-safe, steel or like pipework which is lined with a plastic or like liner. At joints in such pipework, the liner is brought out over the flange face to form the actual seal. Consequently, the liner is vunerable to fire or other forms of external heat at the joints.In accordance with the present invention, a metal ring is provided around the periphery of the liner at each joint to protect the liner from fire. The metal ring is not intended to provide a complete seal if the sea...