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:
May. 02, 2006
Filed:
Jan. 29, 2002
Martin Paul Hardy, Gillingham, GB;
Andrew John Hargreaves, Faversham, GB;
Michael Peter Cooke, Gillingham, GB;
Martin Paul Hardy, Gillingham, GB;
Andrew John Hargreaves, Faversham, GB;
Michael Peter Cooke, Gillingham, GB;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
A method of assembling a piezoelectric actuator arrangement comprises providing a piezoelectric element having first and second ends and arranging the piezoelectric element within a sleeve member such that the inner surface of the sleeve member defines, together with the outer surface of the piezoelectric element, a chamber for receiving a first filler material. The first filler material is injected into the chamber and a heating effect is applied to the sleeve member such that the sleeve member deforms to seal against the first filler material. The invention also relates to a piezoelectric actuator arrangement arranged within a sleeve member, an inner surface of the sleeve member and an outer surface of the piezoelectric element together defining, at least in part, a chamber containing a filler material such that, when the actuator arrangement is in use, a force due to fuel pressure within an injector accumulator volume is applied to the piezoelectric element through the sleeve member and the filler material.