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. 02, 1983
Filed:
Dec. 19, 1980
Hiroshi Horikawa, Minami-ashigara, JP;
Yoshiaki Uchida, Minami-ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A liquid passage switching device in which switching of a liquid takes place entirely within another liquid so that no bubbles can be entrapped in the liquid while it is being switched between passages. Plural passages are formed in a head one side of which is sealed with a container having ports which allow a first liquid to flow in and out. A generally U-shaped connecting tube is mounted on a supporting plate and ends of the connecting tube are rotatable by the supporting plate along a circle in which the passages in the head are formed. The openings of the connecting tube are engagable with and disengagable from the passage in the head by moving the supporting plate outward, rotating the supporting plate, and then moving the supporting plate back towards the head and engaging the openings of the connecting tube with the desired passages.