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:
Jun. 20, 2000
Filed:
May. 20, 1998
Applicant:
Inventors:
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
1234 / ; 1231936 ;
Abstract
A piston is provided for use in a free-piston engine and includes a crown portion having a predetermined thickness, a plunger connection portion having a passage extending therethrough along the axis of the piston and being connected to the crown portion, a sealing portion extending from the crown portion, and a strut portion having a plurality of struts disposed between the sealing portion and the plunger connection portion. The piston of the subject invention provides a compact, high strength, low weight design that is effective in use to provide efficient operation and effectively conduct heat from the piston during use.