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. 13, 2011
Filed:
Mar. 17, 2009
Applicants:
Kunihiro Hayashi, Itabashi-ku, JP;
Fumio Ohtomo, Itabashi-ku, JP;
Kaoru Kumagai, Itabashi-ku, JP;
Inventors:
Assignee:
Kabushiki Kaisha TOPCON, Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a surveying device, which comprises rotatorsandfor deflecting a distance measuring light in horizontal direction and for projecting the distance measuring light in rotary irradiation, at least one extension memberfor increasing a spreading angle in vertical direction of the distance measuring light, and a means for attaching or detaching the extension member so that the extension member can be inserted and removed to or from a distance measuring optical axis.