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:
Aug. 16, 2005
Filed:
Feb. 11, 2003
Applicants:
Bernhard Kirsch, Mandelbachtal, DE;
Manfred Muschalle, Milwaukee, WI (US);
Inventors:
Bernhard Kirsch, Mandelbachtal, DE;
Manfred Muschalle, Milwaukee, WI (US);
Assignee:
Thomas Magnete GmbH, , DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K031/02 ;
U.S. Cl.
CPC ...
Abstract
A solenoid having increased axial force and low static friction on the armature is disclosed and provides an improved solenoid-driven hydraulic valve actuator. The solenoid includes a coil member, a pole piece having an inside surface with recessed and non-recessed portions to form an inner recess in the pole piece, an armature inside the pole piece, and a bearing held in the recess between the pole piece and armature, the bearing having an inner surface extending inwardly just beyond the inside surface of the pole piece non-recessed portion.