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:
Jan. 20, 2015
Filed:
Feb. 29, 2012
Kenichi Mitsui, Kiyosu, JP;
Katsuhisa Ota, Kiyosu, JP;
Kaoru Itou, Okazaki, JP;
Toyoda Gosei Co., Ltd., Aichi-pref., JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A boot seal for variable compression-rate engine includes a boot-seal element, and a reinforcement member. The boot-seal element includes an inner layer, and an outer layer. The inner layer is disposed on the inner face of the boot-seal element, and is composed of a fluorinated rubber. The outer layer is disposed on a more outer side of the boot-seal element than is the inner layer. Moreover, the boot-seal element is formed in a circumferentially developed state so as to have circumferential ends, and is then completed by joining the circumferential ends with each other. Thus, the boot-seal element makes an elastically deformable cylindrical bellows shape having a root that dents inward diametrically. In addition, the reinforcement member is disposed in the root of the cylindrical bellows-shaped boot-seal element at least.