The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 30, 2001
Filed:
Sep. 20, 1999
Applicant:
Inventor:
Fujio Yamane, Tottori-ken, JP;
Assignee:
Hitachi Metals, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B21D 5/378 ;
U.S. Cl.
CPC ...
B21D 5/378 ;
Abstract
The vane,is substantially in a flat rectangular parallelepiped shape having (a) two wide side surfaces,′ opposing in the thickness direction and being slidable in each guide groove,of a rotor,of an actuator, (b) two narrow side surfaces,′ opposing in the width direction, (c) an as-cold-worked top surface 1,having an arcuately projecting cross section in a plane perpendicular to the width direction and being in slidable contact with a cam surface,of the actuator,for sealing, and (d) a bottom end surface,opposing the top surface,, both ends of said top surface,in the width direction being bulging toward the cam surface