Umbrella rib fabrication method

Metal working – Barrier layer or semiconductor device making – Barrier layer device making

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Details

29417, 29411, 264150, B23P 1700, B21F 4100, B29C 5300

Patent

active

057221359

ABSTRACT:
An umbrella fabrication method including the steps of (I) preparing a bamboo tube by cutting off nodes from a bamboo cane, (II) bonding a resin compound to the inside of the bamboo tube thus obtained, so as to obtain a resin bonded bamboo tube, and, (III) cutting the resin bonded bamboo tube into finished pieces, each finished piece having a flat bamboo base, and a resin rib body bonded to one side of the flat bamboo base.

REFERENCES:
patent: 1159644 (1915-11-01), Brecht
patent: 2311704 (1943-02-01), Simison
patent: 3742985 (1973-07-01), Rubenstein
patent: 4231834 (1980-11-01), Gonzalez
patent: 4916786 (1990-04-01), Chollett et al.
patent: 5341555 (1994-08-01), Warden et al.
patent: 5566418 (1996-10-01), Steffen et al.

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