| US 7,475,887 B2 | ||
| Pallet jack | ||
| Fred O. Hartmann, Thief River Falls, Minn. (US); and Allen C. Aaseby, Thief River Falls, Minn. (US) | ||
| Assigned to Grand Steer Inc., Thief River Falls, Minn. (US) | ||
| Filed on Oct. 30, 2007, as Appl. No. 11/929,299. | ||
| Application 11/737582 is a division of application No. 11/012431, filed on Dec. 15, 2004, granted, now 7,226,060, filed on Jun. 05, 2007. | ||
| Application 11/929299 is a continuation of application No. 11/737582, filed on Apr. 19, 2007, granted, now 7,427,075. | ||
| Prior Publication US 2008/0042381 A1, Feb. 21, 2008 | ||
| Int. Cl. B62D 21/14 (2006.01); B62D 33/08 (2006.01); B62D 61/12 (2006.01); B60P 1/02 (2006.01); B60P 1/00 (2006.01); B66F 9/00 (2006.01) | ||
| U.S. Cl. 280—43.12 [280/641; 280/38; 280/43.17; 280/651; 414/495; 414/723; 414/705; 414/530; 414/533; 414/785; 414/685] | 16 Claims |
| 1. A pallet jack comprising:
a platform for supporting a load positioned thereon positionable between a raised positioned and a lowered position, the platform
having proximal and distal ends;
a steerable main wheel connected to the proximal end of the platform;
a distal wheel proximately connected to the distal end of the platform, a first turn radius of the pallet jack defined by
the distance between the main wheel and the distal wheel;
a housing member attached to the underside of the platform; and
a roller at least partially disposed within the housing member a fixed distance from the platform between the main wheel and
the distal wheel, whereupon positioning the platform from the raised position toward the lowered position, the roller engages
the ground to facilitate steering of the pallet jack and the distal wheel disengages the ground, whereupon a second turn radius
of the pallet jack is defined by the distance between main wheel and the roller, wherein the second turn radius is less than
the first turn radius.
|