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. 27, 2017
Filed:
Oct. 28, 2013
Perma-tec Gmbh & Co. KG, Euerdorf, DE;
Jochen Lehnert, Niederlauer, DE;
Manfred Grom, Schlimpfhof, DE;
Thomas Haupt, Burkardroth, DE;
Egon Eisenbacher, Karlstadt, DE;
perma-tec GmbH & Co. KG, Euerdorf, DE;
Abstract
The invention relates to a method of dosing lubricating grease with a lubricant dispenser (), comprising a lubricant cartridge () filled with lubricating grease () and holding a plunger () for expelling the lubricating grease (), a spindle () driven by a direct-current drive motor () for moving the plunger (), a power supply (), a controller () for operating the motor () with a microcontroller (), and a device () for interrupting the motor current flowing through the motor (). The motor () is started up by the controller () in adjustable time intervals and a dose of dispensed agent is expressed from the cartridge () through a plunger motion with a predetermined plunger stroke. The motor current and the motor voltage are measured during motor operation, and the motor runtime, and the plunger stroke is calculated with the current and voltage measured values and at least one motor characteristic. The motor current is interrupted when the motor operating time reaches the calculated motor runtime.