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. 29, 1990
Filed:
May. 28, 1989
Applicant:
Inventors:
Yutaka Matayoshi, Yokosuka, JP;
Toru Yoshimura, Yokosuka, JP;
Shigeru Kamegaya, Tokyo, JP;
Kyugo Hamai, Yokosuka, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ; F01L / ;
U.S. Cl.
CPC ...
123 9024 ; 123 9028 ; 123 9046 ;
Abstract
A first rocker arm is used to induce valve lift while a second one used to move the valve back to closed position. The rocker arms are arranged to engage the valve top or retainer surfaces at locations offset from the axis of the valve and to induce the valve to rotate during the lift and closing operations. Springs, hydraulic lifters or double adjust screw type arrangements are used to control clearances.