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:
Nov. 02, 1976
Filed:
Jan. 07, 1975
Sytze Brouwers, Stegaurach, DT;
Gerhard Brune, Bamberg, Gaustadt, DT;
Waldemar Hans, Bamberg, DT;
Helmut Staib, Bamberg, DT;
Robert Bosch G.m.b.H., Stuttgart, DT;
Abstract
An electro-magnetically actuated solenoid valve is provided with two opposing valve seats between which the armature moves axially. The armature loosely holds valve closure members which cooperate with the opposing valve seats. The valve closure members are urged apart by a spring, and the combined force of this spring and of two further springs exhibits an abrupt change which stabilizes the armature in a position approximately mid-way between the two extreme positions. The end portion of the armature and of the cooperating pole piece is so configured that the path of the armature is limited to a region within which the magnetic force does not change rapidly.