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. 27, 1983
Filed:
Feb. 19, 1982
Gunther Kuhn, Hamburg, DE;
Eppendorf Geratebau Netheler & Hinz GmbH, Hamburg, DE;
Abstract
A repeating pipetting device includes an elongated housing, a flange holder at one end of the housing for holding the flange of a syringe, a coupling assembly for connection to the plunger of the syringe, and a toothed rack connected to the coupling assembly and longitudinally reciprocable relative to the flange holder. A pawl is engageable with the teeth of the rack and is operable to advance the rack toward the flange holder in a succession of steps. An operating lever movable back and forth in the elongated direction of the housing, intermittently operates the pawl, and a return lever retracts the rack from the flange holder. A tongue-like cover or slide is provided within the device and covers the rack for a part of its length. The cover is slidably adjustable along the rack and has a portion engageable by the pawl which limits the extent to which the rack can be advanced by the pawl in each step.