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:
Dec. 22, 2015
Filed:
Apr. 24, 2012
Henry Maurice Wandrie, Iii, Irvine, CA (US);
Richard Allen Grishaber, Long Beach, CA (US);
Steven Robert Scott, The Woodlands, TX (US);
John Hamilton Brooks, Long Beach, CA (US);
Robert Pill, San Pedro, CA (US);
Benjamin Monroy, Carson, CA (US);
Albert Antoun Shehata, Hawthorne, CA (US);
Henry Maurice Wandrie, III, Irvine, CA (US);
Richard Allen Grishaber, Long Beach, CA (US);
Steven Robert Scott, The Woodlands, TX (US);
John Hamilton Brooks, Long Beach, CA (US);
Robert Pill, San Pedro, CA (US);
Benjamin Monroy, Carson, CA (US);
Albert Antoun Shehata, Hawthorne, CA (US);
Industrial Parts Depot, LLC, Torrance, CA (US);
Abstract
A two-piece piston is formed by friction welding an upper member to a lower member, wherein the upper and lower members are precision cast to net final dimensions such that no post-casting machining is required prior to the friction-welding process. The upper member includes a substantially flat crown and combustion surface extending radially inward from the crown. The lower member includes a pair of opposing skirts, each having a bore formed therethrough for receiving a connecting rod pin. The upper member and lower member each include at least two corresponding connecting surfaces that form a welded joint therebetween when the upper and lower members are friction welded together. The finished piston includes an integral cooling oil reservoir adjacent to the combustion surface.