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. 30, 2018
Filed:
Feb. 14, 2014
Aisin Seiki Kabushiki Kaisha, Kariya-shi, Aichi, JP;
Yoshiaki Iguchi, Toyohashi, JP;
Yuji Noguchi, Obu, JP;
Takeo Asahi, Kariya, JP;
Kenji Ikeda, Gotenba, JP;
Hiroyuki Hamasaki, Obu, JP;
Tomohiro Kajita, Anjo, JP;
AISIN SEIKI KABUSHIKI KAISHA, Kariya-Shi, Aichi, JP;
Abstract
A valve opening and closing timing control apparatus includes a torsion coil spring provided at an accommodation chamber which is defined by a front member provided at a drive-side rotational member and a tubular void provided at a driven-side rotational member, the torsion coil spring engaging with the front member and the driven-side rotational member to bias the driven-side rotational member in an advanced or a retarded angle direction relative to the driven-side rotational member and an oil reservoir portion defined by an outer surface of the torsion coil spring facing the driven-side rotational member and at least one recess portion provided at the driven-side rotational member, the recess portion being provided in a radially outer direction from a position at a radially outer side than an inner diameter of the torsion coil spring and at a radially inner side than an outer diameter of the torsion coil spring.