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:
Oct. 19, 2021
Filed:
May. 04, 2017
Medela Holding Ag, Baar, CH;
MEDELA HOLDING AG, Baar, CH;
Abstract
A diaphragm vacuum pump has a pump chamber, a vacuum diaphragm for generating an underpressure in the pump chamber, an electric motor () with a motor shaft, a gear and a connecting element. The gear converts a rotational movement of the motor shaft into a cyclical, approximately linear forward and rearward movement of the connecting element, as a result of which the connecting element effects a cyclical movement of the vacuum diaphragm. The rearward movement of the connecting element per cycle is effected by a first rotation angle of the motor shaft which, on account of the gear, is not of the same magnitude as a second rotation angle of the motor shaft, wherein the second rotation angle effects the forward movement of the connecting element per cycle. The diaphragm vacuum pump according to the invention can be designed such that it is small and quiet and yet provides optimal power.