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:
Mar. 08, 2022
Filed:
Nov. 02, 2015
Pierburg Pump Technology Gmbh, Neuss, DE;
Stefan Hammer, Duesseldorf, DE;
Wolfgang Pilenz, Neukirchen-Vluyn, DE;
Enver Des, Neuss, DE;
Stefan Sommer, Duesseldorf, DE;
Moritz Johannes Job, Duesseldorf, DE;
PIERBURG PUMP TECHNOLOGY GMBH, Neuss, DE;
Abstract
An automobile vacuum pump includes a pump chamber with a pump rotor, an outlet chamber, a partition wall separating the pump chamber from the outlet chamber, and an outlet valve in the partition wall. A compressed gas is discharged from the pump chamber into the outlet chamber via the outlet valve. The outlet valve is formed by a valve opening in the partition wall, a valve seat arranged around the valve opening, and a leaf spring provided as a valve body. The leaf spring includes a spring body which includes a fastening site where the spring body is fixed to the partition wall, and a spring-body-side stopper. The spring-body-side stopper is arranged so that a first distance between the spring-body-side stopper and the fastening site is larger than a second distance between the fastening site and an opening edge of the valve opening which is closest to the fastening site.