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:
Feb. 03, 2015
Filed:
Dec. 29, 2008
Dietmar Erich Bernhard Lilie, Joinville, BR;
Paulo Sergio Dainez, Joinville, BR;
Nerian Fernando Ferreira, Joinville, BR;
Marcelo Knies, Joinville, BR;
Dietmar Erich Bernhard Lilie, Joinville, BR;
Paulo Sergio Dainez, Joinville, BR;
Nerian Fernando Ferreira, Joinville, BR;
Marcelo Knies, Joinville, BR;
Whirlpool S.A., Sao Paulo, BR;
Abstract
A piston and cylinder combination driven by linear motor with cylinder position recognition system, including a support structure forming an air gap; a motor winding generating a variable magnetic flow along part of the air gap; a cylinder having a head at one end; a piston connected to a magnet, the magnet driven by the magnetic flow of the motor winding to move inside a displacement path including at least partially the air gap; the displacement of the magnet making the piston reciprocatingly move inside the cylinder; and an inductive sensor disposed at a point of the displacement path of the magnet, such that when the piston reaches a position of closest approach to the cylinder head, the inductive sensor detects a variation in the magnetic field resulting from the corresponding position of the magnet, and generates a voltage signal arising from this magnetic field variation.