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. 12, 1987
Filed:
Dec. 18, 1985
Zdenek S Meistrick, Bloomfield, CT (US);
Robert B Price, Manchester, CT (US);
The Jacobs Manufacturing Company, Bloomfield, CT (US);
Abstract
An hydromechanical overhead is provided for a four-cycle internal combustion engine. The hydromechanical overhead includes a set of master cylinders and pistons adapted to be actuated by each of the engine exhaust and intake pushtubes, a set of slave cylinders and pistons adapted to actuate each exhaust and intake valve, a two-position three-way control valve associated with each slave cylinder, passageways interconnecting the several master and slave cylinders and control valves and electronic control means adapted to move the control valves between a first position wherein the engine operates in a four-cycle powering mode and a second position wherein the engine operates in a two-cycle retarding mode. A solenoid controlled lash adjustment mechanisn is provided for the exhaust and intake valves whereby the normal lash required for the powering mode of engine operation may automatically be increased to the substantially larger lash required for the two-cycle retarding mode of engine operation.