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:
Sep. 29, 1992
Filed:
Apr. 06, 1990
Applicant:
Inventors:
Assignee:
Tosoh Corporation, Yamaguchi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B67D / ;
U.S. Cl.
CPC ...
222132 ; 2221445 ; 222309 ;
Abstract
An apparatus for selectively injecting a reagent into a reaction chamber from a plurality of reagent reservoirs disposed in a circular configuration includes a separate dispenser mounted on each reagent reservoir. A vertically extending rod having a horizontally extending lever connected thereto is positioned concentrically within the circular array of reservoirs and drive motors are provided for rotating and reciprocating the rod and lever to selectively engage and operate the desired dispenser. Each dispenser is provided with its own distribution tube which directs the reagent in the reservoir directly into a selected reaction chamber, thereby preventing cross contamination of the reagents.