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:
Aug. 08, 2017
Filed:
May. 19, 2014
Applicant:
Ricoh Imaging Company, Ltd., Tokyo, JP;
Inventors:
Assignee:
RICOH IMAGING COMPANY, LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/04 (2006.01); G02B 7/10 (2006.01);
U.S. Cl.
CPC ...
G02B 7/04 (2013.01); G02B 7/10 (2013.01);
Abstract
A lead screw device includes a lead screw including a thread portion, and a driven body which engages with the thread portion, and moves in an axis direction of the lead screw along with rotation of the lead screw about an axis, the driven body including a pair of driven members disposed to sandwich the lead screw in a radial direction, wherein the pair of driven members is biased in a direction which sandwiches the lead screw in the radial direction, and a tooth portion provided in each of the driven members engages with the thread portion of the lead screw by a biasing force.