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:
Apr. 04, 1989
Filed:
Jul. 01, 1987
Larry E Kniepkamp, Freeberg, IL (US);
Marsh Company, Belleville, IL (US);
Abstract
A valve and nozzle system for drop on demand ink jet printing apparatus wherein a single valve communicates with a plurality of orifices for controlling the flow of ink simultaneously through the orifices. The valve has a chamber with an inlet port and a plurality of outlet ports communicating with the chamber. The outlet ports have seats that are in a common plane and a piston has a face that, when the valve is closed, simultaneously seats against all the outlet port seats to close the valve. When a solenoid is energized to withdraw the piston and open the valve, the valve face separates simultaneously from the outlet port seats. Thus the outlet ports are opened and closed simultaneously.