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:
Oct. 02, 1979
Filed:
Nov. 23, 1977
Alexander Goloff, East Peoria, IL (US);
Richard A Cemenska, Edelstein, IL (US);
Caterpillar Tractor Co., Peoria, IL (US);
Abstract
An engine valve, reciprocally mounted in an engine, comprises a hollow stem having a head secured thereon and an annular face defined on the head adapted to engage an annular seat defined on an insert secured in the engine. A first tube is disposed in the stem to define a first passage therethrough and a fluted second tube is disposed between the stem and the first tube to define a plurality of second passages therethrough. A lower end of the first tube is open whereas a lower end of the second tube is closed by a cap whereby a coolant, such as oil, may be circulated through the first and second passages. A plurality of third passages are defined between the second tube and the stem to communicate with a chamber defined in the head of the valve, adapted to contain a vaporizable liquid coolant, such as water, therein. The insert has an annular passage defined therearound for circulating water about the seat and face for cooling purposes.