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:
Aug. 30, 1994
Filed:
Sep. 01, 1993
Sebastian Zabeck, Viernheim, DE;
Andreas Sausner, Neu Isenburg, DE;
Firma Carl Freudenberg, Weinheim, DE;
Abstract
An electromagnetically operated valve for the clocked feeding of volatile fuel constituents out of the free space of a fuel tank into the intake manifold of an internal combustion engine is disclosed. The valve is provided with at least one intake port and at least one outlet port, a main valve seat and an auxiliary valve seat connected parallel to the main valve seat being provided between the intake and the outlet ports. A corresponding main closing element and an auxiliary closing element are provided, the main closing element having a movable mass m.sub.I and the auxiliary closing element having a movable mass m.sub.II. The closing elements sealingly contact the corresponding valve seats in a sealed (off) position through the force of at least one valve spring at any one time. The main closing element, when actuated, is shiftable to an open position by a resultant force F.sub.resI and the auxiliary closing element is likewise shiftable to an open position by a resultant force F.sub.resI. The ratio F.sub.resI /m.sub.I is smaller than ratio F.sub.resII /m.sub.II.