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:
Jul. 19, 1994
Filed:
Apr. 09, 1993
Applicant:
Inventor:
Jukka Tervamaki, Helsinki, FI;
Assignee:
Nippon Zeon Company, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01L / ;
U.S. Cl.
CPC ...
422100 ; 422 99 ; 436180 ; 7386413 ;
Abstract
A step pipette, which has a dosing rack and therein a dosing toothing, a strike meshing with the dosing toothing, a filling rack connected with the dosing rack by a gear, a striker spring as well as a release member for releasing the tension of the striker spring after the last full-lenght stroke. The solution ensures that also the last liquid dose is always full.