(19)
(11) EP 0 887 041 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.05.1999 Bulletin 1999/21

(43) Date of publication A2:
30.12.1998 Bulletin 1998/53

(21) Application number: 98202060.4

(22) Date of filing: 19.06.1998
(51) International Patent Classification (IPC)6: A47L 15/13
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 26.06.1997 US 883401

(71) Applicant: EVANS, David H.
Channel Island Harbor, CA 93055 (US)

(72) Inventor:
  • EVANS, David H.
    Channel Island Harbor, CA 93055 (US)

(74) Representative: Weatherald, Keith Baynes 
Castles, 17 Landsdowne Road
Croydon, Surrey CR0 2BX
Croydon, Surrey CR0 2BX (GB)

   


(54) Ultrasonic cleaning system


(57) A portable ultrasonic cleaning system (1), comprising an ultrasonic transducer (49) contained within a submersible housing (3) to be removably placed in a liquid (31) in a bath (33) for receiving items (36) to be cleaned, a controller (5) for operating the transducer, a tubular conduit (7) attached to the housing and extending from the housing out of the liquid bath to a flexible electrical cable (9) attached to the controller. The cleaning system may employ a submersible low liquid level sensor (18), either as a separate submersible item in the liquid bath, or as an integral part of the transducer hardware. The low liquid level sensor may be mechanically mounted to the tubular conduit leading to the transducer housing, or it may be mounted on the housing itself. The cleaning system is especially adapted for cleaning kitchen ware.






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