Valve-needle mounting for dyestuff applicator

US4203554A · kind A · utility

Assignee

• Maschinenfabrik Peter Zimmer Aktiengesellschaft · AT

Inventors

• Peter Zimmer · Kufstein, AT
• Hans Kudlich · Kufstein, AT
• Karl Schweitzer
• Walter Mayr · Alsdorf, DE

Key dates

• Filing date: Mar 17, 1978
• Grant date: May 20, 1980
• Expiry date: Mar 17, 1998

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2202/05
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A nozzle of a dyestuff applicator has a cylindrical valve housing formed with an orifice obstructable by the tip of an electromagnetically displaceable needle which controls the outflow of dyestuff from a chamber in that housing. The chamber is sealed by a rubber diaphragm which is penetrated by the needle whose shaft is engaged by a pair of parallel membranes of spring steel peripherally clamped in an extension of the housing. Each membrane comprises a narrow outer ring with an inwardly projecting tongue split into two diverging branches which are interconnected at their free ends, near the diametrically opposite side of the outer ring, by a re-entrant web extending radially between these branches and terminating in an inner, needle-supporting ring concentric with the outer ring.