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. 22, 2009
Filed:
Mar. 13, 2006
Larry M. Moeller, Schaumburg, IL (US);
Yury Shkolnikov, Glenview, IL (US);
Walter J. Taylor, McHenry, IL (US);
Larry M. Moeller, Schaumburg, IL (US);
Yury Shkolnikov, Glenview, IL (US);
Walter J. Taylor, McHenry, IL (US);
Illinois Tool Works Inc., Glenview, IL (US);
Abstract
A combustion nailer configured for reducing intake of contaminated air during operation, includes a combustion engine having a cylinder with a piston reciprocating between a prefiring position and a fully extended position, and at least one air port in the cylinder below the fully extended position. The at least one air port is provided with a venting check valve configured so that the discharge volume from the cylinder out the at least one air port is greater than the inflow.