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:
Dec. 04, 1990
Filed:
Oct. 31, 1988
Applicant:
Inventor:
Gustav Wirz, Berg, CH;
Assignee:
Alphasem AG, Berg, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65D / ;
U.S. Cl.
CPC ...
222207 ; 222209 ; 222214 ; 222309 ; 222334 ; 222440 ; 222447 ; 222450 ; 222504 ; 417413 ; 417479 ; 417518 ;
Abstract
A metering apparatus has a metering chamber which has at least one boundary surface in the form of a flexible diaphragm. The diaphragm is operatively connected to an actuating device so that the volume of the chamber for metering and deliveirng the substance can be varied. An inlet opening and an outlet opening in the metering chamber can preferably be closed off directly by the diaphragm, more specifically by means of closure devices arranged in the region of those openings. The metering apparatus is particularly suitable for die bonders for the delivery of a bonding agent onto a substrate which is then equipped with electronic components.