Method of forming a metalic intermediate quasi-half annuli, usef

Details Method of forming a metalic intermediate quasi-half annuli, usef Method of forming a metalic intermediate quasi-half annuli, usef

1996-06-17

1999-11-02

Echols, P. W.

Metal working

Method of mechanical manufacture

Assembling or joining

138 96R, B23P 1100

Patent

active

059746530

ABSTRACT:
The invention provides for an intermediately formed quasi-half metallic annulus useful in constructing a full metallic annulus that can be mounted at the ends of insulated pipes and like equipment for weatherproofing purposes. Each quasi-half annulus includes (a) an arcuate side wall defined by a common radius originating along a longitudinal line of formation parallel to the side wall, (b) an end wall connected at one end of the side wall, (c) the side and end wall including an integrally formed corner for uniting them wherein the side wall has a rectangular opening parallel to the line of formation and an arcuate opening normal to the line of formation at an end opposite to the end wall. The rectangular opening is offset to a side of the line of formation in a direction opposite to the position of the side wall so that the combined area of the side and end walls is slightly greater that a conventional half annulus of similar shape and dimensions. Due to the invention, the side and/or end openings are also flexibly workable to permit entry within or without mating side and/or end openings of an another intermediate quasi-half annulus of similar construction. Result: a full annulus united along a U-shaped overlap region of common transverse and circumferential length W is easily formed, say for covering over an open side of insulation about pipes and associated equipment to protect same. A method of formation and usage is also described.

REFERENCES:
patent: 3818949 (1974-06-01), Johnson
patent: 4323088 (1982-04-01), McClellan
patent: 5458717 (1995-10-01), Kurita

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