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. 24, 2012
Filed:
Jul. 27, 2007
Kazunori Kawahara, Nishio, JP;
Yasuyuki Uchida, Aichi, JP;
Yuji Kato, Okazaki, JP;
Takayoshi Ota, Okazaki, JP;
Hiroyuki Kawara, Toyota, JP;
Kazunori Kawahara, Nishio, JP;
Yasuyuki Uchida, Aichi, JP;
Yuji Kato, Okazaki, JP;
Takayoshi Ota, Okazaki, JP;
Hiroyuki Kawara, Toyota, JP;
Otics Corporation, Aichi-ken, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Abstract
A hydraulic auto-tensioner includes a high-pressure oil chamber and a low-pressure oil chamber, and oil (L) in the high-pressure oil chamber passes through a clearance (G) between a cylinder () and a piston portion () of a plunger and leaks into the low-pressure oil chamber from an end of the clearance (G) near an end surface of the cylinder (). A recessed groove () is provided in an inner peripheral surface of the cylinder () by a conical surface () having a groove angle of 5 to 15 degrees from the end of the clearance (G), a throttle portion () projecting onto the piston portion () side is provided further toward the end surface side of the cylinder than the groove () in the inner peripheral surface of the cylinder (), and a throttle gap (A) larger than the clearance (G) is formed between the throttle portion () and the piston portion ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile