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:
Nov. 25, 1986
Filed:
Nov. 20, 1984
Toshiyuki Sasaki, Tokyo, JP;
Tomozo Sekiguchi, Kawaguchi, JP;
Pentel Kabushiki Kaisha, Tokyo, JP;
Abstract
A fluid dispenser according to the present invention has a tubular body having therein a fluid chamber, a pusher for pushing the fluid, and a feed mechanism for progressively advancing the pusher. The feed mechanism has a slider and an actuator for advancing the pusher so that a suitable amount of the fluid in the fluid chamber of the tubular body is fed to an outlet of the dispenser. The outlet may be in the form of a nib when the dispenser is in the form of a writing pen. In a preferred embodiment of the invention, the feed mechanism has a nut fixed within the tubular body, a threaded rod threadedly engaged with the nut, a rotary member slidably mounted on the threaded rod and spring biased rearwardly towards the actuator, a slider for rotating the rotary member, and a guide device for guiding the rotary member and the slider. The guide device has grooves on the inner surface of the tubular body.