Patent ID: 7665485
Filing Date: 2010-02-23
Classification: B08B,F16J,F16L,Y10T

Abstract:
1. A closing system for pressurised pipes, comprising: an annular supporting structure, to be welded or secured to one end of a pressurized pipe, a closing hatch pivotally mounted on said annular supporting structure, means designed to lock said hatch in a closing position, said means consisting of a locking ring inserted into an annular cavity in said support to lock the hatch, said closing hatch having an inner wall designed to couple to a corresponding wall in said annular supporting structure, a seal being mounted on said inner wall of the closing hatch, or on said corresponding wall of said of said annular supporting structure, said inner wall of said closing hatch and said corresponding wall of said annular supporting structure are inclined by 45° and are configured so that said closing hatch pivots open and closed only by rotation.