US 7,562,729 B2
Shopping cart
Jürgen Hämmerle, Günzburg (Germany)
Assigned to Wanzl Metallwarenfabrik GmbH, Leipheim (Germany)
Filed on Jan. 18, 2008, as Appl. No. 12/16,463.
Application 12/016463 is a continuation of application No. PCT/EP2006/006891, filed on Jul. 14, 2006.
Claims priority of application No. 20 2005 011 625 U (DE), filed on Jul. 20, 2005.
Prior Publication US 2008/0122227 A1, May 29, 2008
Int. Cl. B60K 1/00 (2006.01)
U.S. Cl. 180—65.1  [280/33.992; 280/DIG. 4] 24 Claims
OG exemplary drawing
 
1. A push cart comprising a frame, a pushing device, a plurality of casters, one or more electric consumers, at least one rechargeable battery, and at least one power generator that can be driven via a traveling motion of the cart and is connected to the at least one rechargeable battery such that a charge current flows to the at least one rechargeable battery during a normal generator operation,
wherein the power generator is configured as a direct electric drive motor, and
wherein the motor includes an electronic control unit having a shorting bar such that the motor can be switched between the normal generator operation and a braking operation in which braking current flows across the shorting bar and the traveling motion of the cart is hampered.