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. 26, 1993
Filed:
Feb. 14, 1992
Applicant:
Inventors:
Hiroshi Ushiki, Saitama, JP;
Noboru Fujino, Tokyo, JP;
Assignee:
Kabushiki Kaisha Shinkawa, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
228-45 ; 219 5621 ; 228 47 ;
Abstract
A lead frame holding apparatus for wire bonding machines forcing an upward movement of a heater block and a frame retainer by a heater block raising-and-lowering cam and a frame retainer raising-and-lowering cam and a downward movement of the heater block and frame retainer via a spring force. When the heater block is raised and approaches its upper limit position, the frame retainer is raised by this upward motion of the heater block, thus positioning the lead frame at a standard bonding level.