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:
Jul. 22, 2014
Filed:
Nov. 24, 2008
Dietmar Erich Bernhard Lilie, Joinville SC, BR;
Nerian Fernando Ferreira, Joinville SC, BR;
Marcelo Knies, Joinville SC, BR;
Paulo Sergio Dainez, Joinville SC, BR;
Dietmar Erich Bernhard Lilie, Joinville SC, BR;
Nerian Fernando Ferreira, Joinville SC, BR;
Marcelo Knies, Joinville SC, BR;
Paulo Sergio Dainez, Joinville SC, BR;
Whirlpool S.A., Sao Paulo, BR;
Abstract
A method of detecting impact or collision between a cylinder () and piston () driven by a linear motor of a gas compressor includes the steps of: i) obtainment of a reference signal (Sr) associated to an electrical output of the linear motor before the piston attains the upper dead center; ii) obtainment of a detection signal (Sd) associated to the electrical output of the linear motor after the piston attains the upper dead center; iii) comparison between the reference signal (Sr) and the detection signal (Sd); and iv) record of occurrence of impact when the result of comparison of step iii indicates that the detection signal (Sd) presents a variation deriving from impact between the cylinder and the piston, considering a pre-established tolerance. Also disclosed is an electronic detector device , a gas compressor () and a control system.