Relating to the production of small openings in sheet material

Number of patents in Portfolio can not be more than 2000

United States of America Patent

APP PUB NO 20050188737A1
SERIAL NO

11000804

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In order to form a tapered hole in sheet material, an oversize hole is first formed typically by drilling. The sheet material is then compressed or squeezed in the vicinity of the hole using a press tool to cause the material to flow in the direction of the hole to reduce the size of the hole. The compression produces a hole that tapers from both surfaces of the sheet material to the midpoint of the hole, and an annular region of increased thickness around the area subjected to compression. Machining may be used to remove any annular region of increased thickness so that the remaining sheet material has the same thickness. Further material may be removed by machining to reduce the thickness of the sheet material in the vicinity of the hole so the remaining opening tapers from one surface of the sheet to the other.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
CINETIC LANDIS GRINDING LIMITEDEASTBURN WORKS SKIPTON ROAD CROSS HILLS KEIGHLEY BD20 7SD

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pierse, Michael George Bedford, GB 9 53

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