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. 01, 1990
Filed:
May. 11, 1989
Kurt Stammler, Anderson, SC (US);
Lothar Ruttkowski, Ludwigsburg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A pressure equalizing element for an electronic device enclosure, e.g. for a control device under the hood of a vehicle, features a water-tight but air-transmitting region (21) which equalizes pressure between the interior airspace of the enclosure and ambient airspace. The element preferably includes a porous PTFE foil element which is bowed so that water will not pool on it and clog the air pores. Thus, it will be operative, and can be installed, in any desired orientation. The foil is protected against puncture by surrounding support elements of metal and/or plastic and is adapted to be automatically mass-produced and tested prior to installation.