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:
May. 27, 2025
Filed:
Jan. 25, 2024
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Youngshin Precision Co., Ltd., Gyeongju-si, KR;
Inventors:
Hak Soo Kim, Seoul, KR;
Go Woon Jung, Hwaseong-si, KR;
Jin Hyeon Lee, Seongnam-si, KR;
Seung Yong Shin, Gyeongju-si, KR;
Seung Woo Lee, Gumi-si, KR;
O Su Jang, Pohang-si, KR;
Assignees:
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA CORPORATION, Seoul, KR;
YOUNGSHIN PRECISION CO., LTD., Gyeongju-si, KR;
Primary Examiner:
Int. Cl.
CPC ...
C22C 38/22 (2006.01); C23C 8/18 (2006.01); F04C 18/344 (2006.01);
U.S. Cl.
CPC ...
C22C 38/22 (2013.01); C23C 8/18 (2013.01); F04C 18/344 (2013.01); F04C 2220/12 (2013.01); F05C 2201/0409 (2013.01); F05C 2201/0436 (2013.01); F05C 2201/0439 (2013.01);
Abstract
A cam ring and plate module for vehicle vacuum pumps in which, when an oxide layer formed through steam treatment comes into contact with a carbon or graphite material, a uniform carbon layer is stacked on the oxide layer so as to improve corrosion resistance, wear resistance, hardness and seal resistance.