Lift truck
AssigneeTygard Machine & Manufacturing Company
InventorEdward Tygard
Life of this patent
Estimating the term…
Abstract
A lift truck includes a guide member secured to a mast of the lift truck and a guided member secured to a carriage vertically movable along the mast. The guided member engages with the guide member to resist twisting moments acting on the carriage and enable the carriage to move smoothly along the mast. A clamping apparatus for use with the lift truck is engageable with the forks of the lift truck so that the weight of the clamping apparatus can be supported by the forks. A bracket mounted on the lift truck can be detachably connected to the clamping apparatus to prevent movement of the clamping apparatus in the fore-and-aft direction of the lift truck.
Claims13
A mast structure for a lift truck comprising:
- a mast comprising a pair of parallel uprights, the mast having a fore-and-aft direction which coincides with a fore-and-aft direction of a lift truck when the mast is mounted on a front end of the lift truck and a widthwise direction extending transversely to the fore-and-aft direction of the mast;
- a carriage for supporting a load mounted on the uprights for movement along a height of the mast;
- an elongated guide member secured to the mast between the uprights;
- and
- a roller mounted on the carriage and having a rotational axis extending in the fore-and-aft direction of the mast and rollable along the guide member and engageable with the guide member as the carriage moves along the mast to resist forces acting on the carriage in the widthwise direction of the mast and moments acting on the carriage about an axis extending in the fore-and-aft direction of the mast.
Dependencies are inferred from the claim text.