Securing method of polymer insulator and die used for this metho

Details Securing method of polymer insulator and die used for this metho Securing method of polymer insulator and die used for this metho

1998-03-23

2000-05-02

Bryant, David P.

Metal working

Method of mechanical manufacture

Assembling or joining

29515, 29516, B21D 3904

Patent

active

060557176

ABSTRACT:
A securing method of a polymer insulator including the steps of inserting an FRP core into a depression portion of a metal member having an open end portion, and connecting the metal member to the FRP core by compressing the FRP core and the metal member is disclosed. The improvement includes the steps of: determining a first region defining a part of a compression portion of the metal member, to which a compression pressure is applied, from a side of the open end portion; determining a second region defining the other part of the compression portion in succession with the first region; and controlling a deformation of the first region in such a manner that a deformation amount of the first region is increased gradually toward the second region.

REFERENCES:
patent: 650862 (1900-06-01), McTighe
patent: 2327650 (1943-08-01), Klein
patent: 3152392 (1964-10-01), Coppack et al.
patent: 3192622 (1965-07-01), Bannerman
patent: 4303799 (1981-12-01), Ishihara et al.
patent: 4654478 (1987-03-01), Ishihara et al.
patent: 5907898 (1999-06-01), Kunieda et al.

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