Apparatus for forming a sheet metal product having an opening

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4509355
SERIAL NO

06424313

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

A process of manufacturing a sheet metal product including an opening surrounded at least partially by a drawn area, the process comprising steps of providing a pair of drawing dies, one having a drawing punch and the other having a drawing cavity adapted for cooperation with the drawing punch, putting a blank of sheet metal between the drawing dies, advancing one of the dies toward the other so that the blank is drawn by the punch and the cavity. The process includes a step of forming a slit in the blank by tearing the blank at an area which corresponds to the opening and which is adjacent to an area where the blank is stretched during the drawing step.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
MAZDA KABUSHIKI KAISHA (KNOW IN ENGLISH AS MAZDA MOTOR CORPORATION)NO 3-1 SHINCHI FUCHU-CHO AKI-GUN HIROSHIMA-KEN

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Oishi, Masatoshi Hiroshima, JP 22 161

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation