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:
Apr. 09, 2024
Filed:
Sep. 09, 2022
Henry Donald Schwartz, Manchester, MA (US);
Henry Donald Schwartz, Manchester, MA (US);
Abstract
The present disclosure provides better aspiration and dispensing of fluids by an innovative mechanism by (i) offsetting the diameter of a bottom tube with a narrower top piston when the two are moved together in the same chamber to give extremely fine resolution, thereby eliminating the need for any skinny or filamentous piston, (ii) letting the bottom tube move in the chamber alone without offset to give high flow, (iii) an at-the-ready space between the tube and piston in the chamber to permit contact-free blowoff, including viscous samples, and (iv) a frame, adjustable knob and readable volume gage that let the mechanism operate as a handheld pipettor apparatus for various volumes.