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:
Jun. 14, 1977
Filed:
Apr. 07, 1976
Ernest Kovacs, Allentown, PA (US);
David P Ludwig, Whitehall, PA (US);
Friedich Zwickel, Whitehall, PA (US);
Western Electric Company, Inc., New York, NY (US);
Abstract
An apparatus aligns small articles, such as semiconductor chips, to a reference axis and loads them on predetermined sites of a carrier, such as a tape. The loading requires precisely positioning adhesive dots and the articles at the sites of the tape. Precision within desired limits is achieved by aligning both an applicator for applying the adhesive and the articles in sequence to a common centerline. The tape is maintained in contact with two diametrically opposed locations of an index wheel located on the common centerline. The index wheel is then reciprocated along the centerline to alternately apply adhesive to one of the sites on the tape and then load the aligned article to another one of the sites. An additional article is aligned to the centerline each time loading is completed of a previously aligned article to its respective site. The aligning facility is operated by a cam which controls the vertical position of a plunger and acts as a valving means for selective vacuum and air purge applications.