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:
Dec. 27, 2011
Filed:
Jul. 08, 2008
Avinash R. Manubolu, Edwards, IL (US);
Shriprasad G. Lakhapati, Peoria, IL (US);
Stephen R. Lewis, Chillicothe, IL (US);
Daniel R. Ibrahim, Metamora, IL (US);
Avinash R. Manubolu, Edwards, IL (US);
Shriprasad G. Lakhapati, Peoria, IL (US);
Stephen R. Lewis, Chillicothe, IL (US);
Daniel R. Ibrahim, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A solenoid actuator includes a hard guide piece and a soft flux piece. The hard guide piece has a stop surface ground to create a final air gap distance between the soft flux piece and a stator assembly when the stop surface on the guide piece is in contact with the stator assembly. The final air gap is set by grinding the stop surface on the guide piece so that the distance between the stop surface on the guide piece and a top surface on the soft flux piece along an axis of the guide bore is equal to the final air gap. The step of grinding the armature assembly may be done after attaching the guide piece and the flux piece together. In an exemplary embodiment, the step of grinding the stop surface and associated guide surface(s) are performed in a single chucking.