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:
Oct. 16, 1984
Filed:
Mar. 26, 1981
Denis P Donnelly, Saratoga Springs, NY (US);
Siena College, Loudonville, NY (US);
Abstract
A plurality of thin, conductive wires are stretched across the open center of a frame through which the liquid drops to be measured will fall. Adjacent wires are maintained at a potential difference with respect to each other so that when the wires are momentarily connected by a passing conductive drop, the potential of one rises while that for the other falls. The wires are connected to circuitry which detects the change in potential in each individual wire and stores an indication of such change for later use. By counting the number of adjacent wires whose potential has changed, and knowing the dimensions of the wires and the spacing between them, it is possible to calculate drop size to accuracies dependent upon the design dimensions chosen for the device.