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:
May. 31, 2005
Filed:
Jul. 03, 2003
Applicants:
Patrick George Hill, Willamina, OR (US);
Michael Lee Hill, Silverton, OR (US);
Inventors:
Patrick George Hill, Willamina, OR (US);
Michael Lee Hill, Silverton, OR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D009/06 ;
U.S. Cl.
CPC ...
Abstract
A ball valve operable as an engine brake to resist high rpm operation of the engine on which it is installed. The ball valve has a noncontact seal and can include an aperture through a seal face to permit bypass of sufficient exhaust for operation of the engine at idle while the brake is engaged. If present, the aperture can be tuned, or sized, to provide a desired back pressure matched to a specific engine.