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:
Aug. 17, 1993
Filed:
Dec. 22, 1992
Rene Froelicher, Mutschellen, CH;
Peter Wendel, Wurenlos, CH;
Other;
Abstract
Apparatus for making stencils of the type having a rectangular frame and a woven fabric stretched upon and affixed to the frame for use in a screen printing machine has a table which supports four rows of neighboring fabric stretching devices surrounding a rectangular portion of the upper side of the table. Each stretching device has a support the underside of which abuts the upper side of the table, and a double-acting hydraulic or pneumatic cylinder and piston unit pivoted to the support and having a piston rod extendable toward and retractable away from the frame at the rectangular portion of the upper side of the table. The free end of each piston rod carries tongs having a pair of fabric-engaging jaws which stretch the fabric during retraction of the respective piston rod.