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:
Sep. 28, 1982
Filed:
Oct. 03, 1980
Applicant:
Inventors:
Roger P Worthen, Farmington Hills, MI (US);
Jay M Larson, Marshall, MI (US);
Assignee:
Eaton Corporation, Cleveland, OH (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L / ;
U.S. Cl.
CPC ...
1231 / ; 1231 / ;
Abstract
A thermal barrier (10) fixed to a valve head (12) of a diesel engine poppet valve (14) is disclosed. The barrier includes a thin sheet metal cap 18 having a concave shield portion 18a, an annular fold or corrugation (18b) circumscribing the shield portion, and a cylindrical skirt portion welded to the valve head. The cap and the face portion (12a) of the valve head define an evacuated chamber (20) which is preferably filled with an insulating material (24) which also provides structural support for the shield portion.