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, 1988
Filed:
Mar. 30, 1987
Weston W Haskell, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
This invention concerns a coolant system for a vehicle which possesses a radiator and an excess coolant reservoir to reduce the content of oxygen in the radiator cooling system. An exhaust vent tube communicates with ambient air and the excess coolant reservoir to expel gases generated during engine startup and continuous use. A vacuum exhaust valve is situated in the exhaust vent tube to provide for the expulsion of gas and acts, during engine cool down, to pass exhaust gas to the excess coolant reservoir. This invention situates an adsorption zone, preferably comprised of activated carbon, intermediate the exhaust vent tube and the excess coolant reservoir to adsorb a large quantity of the oxygen being passed to the excess coolant reservoir during cool down periods. Once spent of its adsorption qualities, the adsorbent in the adsorption zone is regenerated by contact with automotive engine exhaust gas at a temperature of between 140.degree. C. and 150.degree. C.