NONREMOVABLE SHUTTER Russian patent published in 1997 - IPC

Abstract RU 2081271 C1

FIELD: civil engineering. SUBSTANCE: nonremovable shutter includes shutter boards, anchor members, hinges. Shutter boards are butted to each other on both sides of shutter. Anchor members are used to secure opposite shutter boards. Hinges are made of soft reinforcing-bar steel. Anchor members are made in the form of metal bracket with bent aside sections. Each bent aside section is bent as sinusoid. EFFECT: higher productivity. 9 dwg

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RU 2 081 271 C1

Authors

Trushchev A.G.

Simkin S.V.

Dates

1997-06-10Published

1993-05-25Filed