B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
214/13, 187/23
B66F 9/075 (2006.01) B66F 9/07 (2006.01)
Patent
CA 2025911
A mast connecting structure is disclosed in which the mast includes a lower end having upper plate means connected to the lower end of a mast, and lower plate means spaced from the upper plate means and connected to a base on which the mast is to be mounted. Tensioned connecting means connect the upper plate means and lower plate means together to thereby mount the mast on the base. The connecting means may comprise bolts having threaded ends and nuts threaded on the bolts. The bolts have an elongated length sufficient to span the thickness of the upper and lower plate means through which the volts pass plus the distance of the space between the upper and lower plate means. The long bolt length increases the volume of the bolt body which results in an increased stress distribution and thereby an increased ability to withstand stress due to impact loading of the connecting structure. The mast end and mast base are preferably held apart at a spaced distance by support means such as spacer tubes positioned between the upper and lower plate means and coaxially with the connecting bolts.
Lloyd Kurt M.
Miskin Stephen N.
Harnischfeger Engineers Inc.
Ridout & Maybee Llp
LandOfFree
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