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:
Apr. 23, 2019
Filed:
Nov. 27, 2017
Robert Bosch Gmbh, Stuttgart, DE;
Marko Lorenz, Grossbottwar, DE;
Andreas Posselt, Muehlacker, DE;
Andreas Gutscher, Markgroeningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A pump device includes an electrical delivery pump, a first port for an air filter, a second port for a fuel tank, a valve opening, a connecting line, a bypass line, and an electrical switching valve. The connecting line connects the ports via the valve opening, which has a valve seat formed at the opening, a valve body receptacle, and a valve body configured to interact with the seat and adjustable in a direction of the seat by a delivery flow of the delivery pump. The bypass line branches off from the connecting line upstream of the opening, and has a throttled bypass outlet opening into the connecting line downstream of the opening. The switching valve has an electrical actuator, for example a magnet coil, operable to move the body. Such a pump device requires less structural space and reduced production costs relative to conventional pump devices.