Load lifting unit for a lift truck Patent #: 4657471
ApplicationNo. 07/029249 filed on 03/23/1987
US Classes:187/227, Guide or drive-means therefor positioned to enhance operator visibility187/228, And guiding means for fluid drive line414/631Portable (e.g., vehicle-mounted, etc.) elevator
ExaminersPrimary: Rolla, Joseph J.
Assistant: Noland, Kenneth
Attorney, Agent or Firm
International ClassB66F 9/08 (20060101)
AbstractThe present invention provides an improved telescopic mast structure for a hydraulically operated lift truck. The mast structure of the present invention has reeved hydraulic hoses which do not obstruct the operators view and a chain connecting the inner and outer telescopic sections so that inner telescopic section moves at twice the speed of the outer telescopic section. This chain is located inside a U shaped channel element that forms the mast mainframe. The U shaped channel that forms the mast mainframe fits around the I shaped elements that support the two telescopic sections and the chain interconnecting the telescopic sections is in front of the I member of the outer telescopic section and alongside of the front part of the I member of the inner telescopic section. The chain interconnecting the telescopic sections is therefore in a protected location and most important it does not add any length to the vehicle.