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:
Apr. 19, 1994
Filed:
May. 17, 1993
Michael A Karls, Hilbert, WI (US);
Brunswick Corporation, Skokie, IL (US);
Abstract
A supplemental remote mounted marine engine cooling system (20) includes a supplemental water pickup (36) mounted to the boat (18), and a flow control valve (38) supplying supplemental cooling water therethrough from the water pickup (36) to the main cooling system (20) when main cooling system water pressure on the downstream side (48) of a check valve (44) in the flow control valve (38) is less than supplemental cooling system water pressure on the upstream side (46) of the check valve (44), and blocking supplemental water flow therethrough when main cooling system water pressure is greater than supplemental cooling system water pressure. The control valve (38) also includes a relief valve (50) between the check valve (44) and the water pickup (36) and discharging excess supplemental cooling water when the check valve (44) is blocking water flow therethrough and supplemental cooling system water pressure is above a given bypass relief threshold. The control valve (38) provides continuous flow therethrough to a first outlet having the check valve (44) and/or a second bypass outlet having the relief valve (50), at high boat speed, to minimize deadhead pressure and minimize reduction in top end boat speed otherwise resulting from the addition of a supplemental water pickup. The water pickup (36) is provided by a tube (106) slicing out a core of water along the underside of the boat hull (108) with minimal drag and turbulence.