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:
Jan. 06, 1987
Filed:
May. 02, 1985
Alfred Hinzmann, Weams, VA (US);
Hauni-Werke Korber & Co. KG., Hamburg, DE;
Abstract
Apparatus for filling ink cartridges which are used in printer units of cigarette making machines has a frame which can removably support an empty cartridge in register with a stationary housing having a reciprocable plunger with axial and radial bores for evacuation of ink from a chamber in the interior of the housing. The chamber receives ink from a tank by way of a feed screw which is driven by a motor. The plunger reduces the volume of the chamber when it is lifted by the nipple of an empty cartridge, and the plunger then permits ink to flow from the chamber into the cartridge. When the cartridge is filled, a piston in its interior indirectly opens a switch in the circuit of the motor so that the feed screw is arrested. When the cartridge is moved away from the housing, a spring rapidly moves the plunger to a position in which the plunger seals the chamber from the surrounding atmosphere and the volume of the chamber is increased abruptly so that any ink which is contained in the bores of the plunger is sucked back into the chamber. This prevents contamination of the housing, of the cartridge and of the surrounding area.