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:
Feb. 04, 2014
Filed:
Nov. 14, 2011
Hiroshi Nakagawa, Ise, JP;
Takayoshi Fujii, Ise, JP;
Takashi Fukunaga, Ise, JP;
Takashi Onoue, Ise, JP;
Hiroshi Nakagawa, Ise, JP;
Takayoshi Fujii, Ise, JP;
Takashi Fukunaga, Ise, JP;
Takashi Onoue, Ise, JP;
Sinfonia Technology Co., Ltd., Tokyo, JP;
Abstract
A linear actuator includes a linear actuator body (), a casing () for housing the linear actuator body (), and insulating oil (L) that fills the casing () with a coil () of the linear actuator body () submerged therein. In such a configuration, heat generated by the coil () is quickly released to the oil (L) and is then conducted to the casing (). The oil (L) fully spreads into gaps in the coil (), of course. Therefore, heat is released very efficiently. Thus, by improving the heat-releasing characteristic, a linear actuator having a reduced size and a reduced weight is provided.