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:
Jun. 19, 2001
Filed:
Jan. 20, 1999
Applicant:
Inventor:
James S. Petrek, Danville, CA (US);
Assignee:
Rainin Instrument Co., Inc., Emeryville, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01L 3/02 ;
U.S. Cl.
CPC ...
B01L 3/02 ;
Abstract
An air displacement pipette having axially spaced annular sealing and frusto-conical lateral support zones and regions on the pipette's mounting shaft and tip, respectively, in combination with structure for insuring uniform depth of mounting shaft penetration into the pipette tip to maintain uniform tip interference with the mounting shaft as successive tips are mounted on and ejected from the mounting shaft whereby the pipette tip is easily and firmly mountable on and ejectable from the pipette tip mounting shaft by the application of reduced user generated axial forces.