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. 21, 2001
Filed:
Jun. 27, 2000
Mitsubishi Pencil Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid applicator has a vaned collector. The collector's rear end is abutted on a partition having a concave portion, creating a gap B therebetween. A cylindrical projection is formed inside the rear sleeve concentrically on its axis so that a replaceable cartridge holding ink is removably attached with its front end fitted to the cylindrical projection. A trunk core's rear end is inserted into a communication passage that is formed in the cylindrical projection with a gap A formed between the trunk core surface and the wall surface of the communication passage. This gap A is put in communication with an ink slit of the collector via gap B. Grooves are formed in the convex portion while a number of ribs are formed apart with respect to a barrel's circumference on inner peripheral surface of the communication passage of the cylindrical projection. These ribs stably support the rear end of the trunk core. Gap A between the rear end of the trunk core and the inner peripheral surface of the communication passage of the cylindrical projection should fall within the following range: 0.02 mm≦A≦0.25 mm, and the ink should be of a water-based ink having a viscosity of 12 mPa.s or below at 25° C. Gap A, gap B, slit width C and spacing D are specified so that A≦B≦C≦D. This setting assures smooth flow of the application liquid such as ink etc., with respect to the cartridge.