US 7,614,854 B2
	Multichamber tank for motor vehicles
Sandor Palvölgyi, Gleisdorf (Austria)
Assigned to Tesma Motoren-und Getriebetechnick GmbH, Sinabelkirchen (Austria)
Filed on Aug. 30, 2005, as Appl. No. 11/216,989.
Claims priority of application No. GM638/2004 (AT), filed on Aug. 31, 2004.
Prior Publication US 2007/0189906 A1, Aug. 16, 2007
Int. Cl. F04B 49/00 (2006.01); B65B 1/34 (2006.01)

U.S. Cl. 417—36  [417/40; 141/126]

7 Claims

1. A multichamber tank for motor vehicles, comprises first and second chambers (4, 5) connected together by a constricted region (6) located in an upper region of the chambers, the first chamber (4) has a filler neck (2) and a line (13) bridging the constriction forming the connection to the second chamber (5), a pump (11) designed for level equalization in the chambers is provided in the line (13), an electric motor (12) drives the pump, and a level sensor means (17, 18) is provided in each of the two chambers (4, 5) for generating output signals to a control unit (14) which controls the electric motor (12) of the pump (11) wherein a further sensor means (30; 30′; 30″) is provided on or at the outer end of the filler neck (2) for indicating a filling-up state to the control unit (14) which enables start-up of the pump (11).