(19)
(11) EP 1 803 221 A1

(12)

(43) Date of publication:
04.07.2007 Bulletin 2007/27

(21) Application number: 05800122.3

(22) Date of filing: 26.09.2005
(51) International Patent Classification (IPC): 
H03K 17/975(2006.01)
(86) International application number:
PCT/US2005/034554
(87) International publication number:
WO 2006/036950 (06.04.2006 Gazette 2006/14)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 24.09.2004 US 613073 P

(71) Applicant: TouchSensor Technologies, L.L.C.
Wheaton, Illinois 60187 (US)

(72) Inventors:
  • CALDWELL, David, W.
    Holland, MI 49424 (US)
  • OPPOR, Rick, L.
    Schaumburg, IL 60193 (US)
  • GIOIOSA, Tony, V.
    Justice, IL60458 (US)
  • CAMPBELL, Bob, B.
    Napervile, IL (US)
  • SCHREIBER, Thomas, M.
    Wheaton, IL 60187 (US)
  • WADIA, Bahar, N.
    Bartlett, IL 60103 (US)
  • MATTHEWS, Mark, R.
    Lombard, IL (US)
  • MUELLER, Donald, Charles
    Aurora, IL 60504 (US)
  • EAVENSON, Dan
    Tinley Park, IL 60477 (US)
  • RUSSO, Anthony
    Elmhurst, IL 60126 (US)
  • LIVINGSTON, Andy
    North Aurora, IL 60542 (US)
  • ROBERTS, Scott
    Bartlett, IL 60103 (US)

(74) Representative: Hackett, Sean James 
Marks & Clerk, Patent Attorneys, Alpha Tower, Suffolk Street Queensway
Birmingham B1 1TT
Birmingham B1 1TT (GB)

   


(54) CONTACTLESS MULTIPOSITION SWITCHES USING CAPACITIVE TOUCH SENSORS