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:
Nov. 03, 2015
Filed:
Mar. 24, 2010
Takashi Nagao, Kanagawa, JP;
Takashi Nagao, Kanagawa, JP;
Sokkia Topcon Co., Ltd., Tokyo, JP;
Abstract
Provided is an electronic level capable of accurately measuring a height difference between two points even when a waving method of finding and determining as a measured height a minimum value of read heights while rocking a leveling rod back and forth is used. An electronic level includes leveling rod reading-in means (S) which reads graduations on a leveling rod being rocked back and forth and stores read heights, and stores the time of reading, approximate function determining means (S) which approximates the read heights read in by the leveling rod reading-in means by a quadratic function of time, and measured value calculating means (S) which determines a minimum value of the quadratic function approximated by the approximate function determining means as a measured height.