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. 02, 2008
Filed:
Jan. 29, 2004
Applicant:
Josef Beck, Villingen, DE;
Inventor:
Josef Beck, Villingen, DE;
Assignee:
Brueninghaus Hydromatik, GmbH, Elchingen, DE;
Primary Examiner:
Int. Cl.
CPC ...
F01B 31/08 (2006.01); F01B 31/10 (2006.01); F16J 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a tubular piston for a piston engine, comprising a tubular section, a collar shaped region and a ball pivot formed thereon, and an inner tube arranged in an outer tube. A cavity is at least partially formed between the outer tube and the inner tube. Said cavity is sealed from the area surrounding the hollow piston in a pressure-tight manner, by a material, especially a solder material, which is arranged in the cavity in a positively locking manner by means of heating.