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:
Mar. 30, 2021
Filed:
Jun. 24, 2019
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Naoya Kitade, Osaka, JP;
Makoto Iyoda, Osaka, JP;
Naoko Yamashita, Hyogo, JP;
Manabu Chikayama, Osaka, JP;
Atsushi Kubo, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 9/31 (2006.01); G11B 33/14 (2006.01); G03B 21/16 (2006.01); G03B 21/00 (2006.01); G11B 33/12 (2006.01); G03B 21/20 (2006.01);
U.S. Cl.
CPC ...
H04N 9/3141 (2013.01); G03B 21/00 (2013.01); G03B 21/16 (2013.01); G03B 21/204 (2013.01); G11B 33/12 (2013.01); G11B 33/142 (2013.01); G11B 33/1466 (2013.01);
Abstract
A drive device includes a housing in which a gas is sealed, wherein density of the gas is lower than density of air, a driven object housed inside the housing, a driver configured to drive the driven object, a current detector configured to detect a value of a current flowing into the driver, and a determinator configured to determine a concentration of the gas inside the housing based on the value of the current detected.