(19)
(11)EP 1 100 165 A3

(12)EUROPEAN PATENT APPLICATION

(88)Date of publication A3:
09.04.2003 Bulletin 2003/15

(43)Date of publication A2:
16.05.2001 Bulletin 2001/20

(21)Application number: 00124635.4

(22)Date of filing:  10.11.2000
(51)International Patent Classification (IPC)7H01R 43/10
(84)Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30)Priority: 12.11.1999 US 438403

(71)Applicant: LITTON SYSTEMS, INC.
Woodland Hills, California 91367 (US)

(72)Inventors:
  • Lawson, Glenn E.
    Blacksburg, VA 24060 (US)
  • Bowman, Anthony L.
    Penbroke, VA 24136 (US)
  • Cole, Stephen R.
    Blacksburg, VA 24060 (US)
  • Day, Michael J.
    Blacksburg, VA 24060 (US)

(74)Representative: Müller - Hoffmann & Partner 
Patentanwälte, Innere Wiener Strasse 17
81667 München
81667 München (DE)

  


(54)Improvement in wrapped ring technology for manufacture of large diameter slip ring bases


(57) In a wrapped ring manufacturing process for slip ring assemblies, the assembly is heated to expand a gap between ends of the slip ring. A conductive material is then used to fill the expanded gap, to assure compression of the conductive material and to eliminate cracks therein. The filled gap is electroplated with a precious metal to form a layer of material of uniform hardness, wear resistance, electrical conductivity and environmental resistance around the entire perimeter of the slip ring.







Search report