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:
Dec. 27, 1988
Filed:
Nov. 27, 1987
Martin Dotsko, Binghamton, NY (US);
Dotsko Enterprises, Inc., Binghamton, NY (US);
Abstract
A plurality of electrically conductive plates, preferably ring-shaped, are spaced from one another and electrically insulated from a conventional conductive probe rod, but movable therewith. The sizes and spacing of the plates are selected to provide a desired variation in capacitance between the plates and the object as the probe rod and the plates are moved toward the object. The capacitance between the probe rod and the object also increases as the probe rod moves toward the object. By appropriately combining these two capactiances, a nearly consant net capacitance occurs when the probe tip is very near a desired distance from the object, for a range of object sizes.