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:
Jan. 30, 1990
Filed:
Nov. 21, 1985
Arne Rosch, Haldenwang, DE;
Horst Stade, Blaichach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method for producing a rotationally-symmetrical, hollow-cylindrical housing having two magnetizable housing parts arranged to straddle a non-magnetic housing zone thereby isolating the housing parts magnetically. The housing is prefabricated, for the sake of simplified, more-economical manufacture, in one piece from a magnetizable blank except for an excess dimension in the outer diameter (d), and an annular groove which is cut into the inner wall of the housing to the width of the desired housing zone. With the housing rotating, a non-magnetizable filling material is introduced into the annular groove, the vicinity of the annular groove being heated during this process, and the rotation of the housing is continued until the filling material has set. Then the housing is turned down on the outside until the final dimension of the outer diameter (d) is attained and at which time there is then no further connection between the magnetizable parts.