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:
Jun. 29, 1999
Filed:
Jul. 08, 1997
Antonius Rehr, Weissach, DE;
Dr. Ing. h.c.F. Porsche AG, Weissach, DE;
Abstract
Within the cooling circuit of an internal combustion engine, coolant ducts are connected in the cylinder head and the coolant jacket of the cylinder block with the coolant pump by coolant passages inside the cylinder block. Starting at the flange surface between the cylinder block and the cylinder head, ducts extend in the cylinder block that are connected with the main ducts of the cooling circuit and serve to supply or drain the cylinder head. These ducts are connected by cast slots that take their departure from the flange surface with the coolant jacket of the cylinder block. These cast slots permit a connection of the coolant jacket with the cooling circuit that is easy to produce without additional bores being necessary. In addition, using casting to produce the connection increases the reliability of the process.