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. 05, 1979
Filed:
Nov. 21, 1977
Walter Schlagmuller, Schwieberdingen, DE;
Rudolf Babitzka, Kirchberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
To suppress spurious oscillations of a membrane-suspended plunger forming a valve body cooperating with the valve seat, the plunger is formed with a blind bore into which a small piston extends, with slight clearance, the bore and piston forming a damping cylinder-piston arrangement which includes additionally a damping fluid so that, upon movement of the plunger as the consequence of energization of a solenoid, the damping cylinder-piston system will suppress such oscillations while still permitting positive movement of the plunger and hence seating the operation of the valve with minimum force due to the membrane suspension thereof.