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:
Feb. 02, 1993
Filed:
Mar. 24, 1992
David A Vittorio, Columbus, IN (US);
Steven W Reedy, Nashville, IN (US);
Cummins Engine Co., Inc., Columbus, IN (US);
Abstract
An improved master cylinder for use with an engine compression braking system includes a two-piece telescoping piston which traps a column of fluid therewithin to establish a solid column or piston for a limited length of travel of the piston. Upon achieving a particular predetermined displacement, the fluid column trapped within the two-piece piston is released, thus rapid piston movement is achieved without overtravel which may open exhaust valves of the engine to a distance wherein interference with the piston occurs. The two-piece telescoping piston is actuated in accordance with an injector pushtube or other combinations such as exhaust or intake valve cam/pushtubes.