B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
254/148
B66F 11/00 (2006.01) B66F 13/00 (2006.01)
Patent
CA 1143364
APPLICANT: AB RESMASTSERVICE TITLE: A DEVICE FOR LIFTING LOADS, ESPECIALLY HEAVY LOADS, IN A STEPWISE MANNER BY MEANS OF ONE OR SEVERAL JACKS ABSTRACT OF THE DISCLOSURE A device for stepwise lifting heavy loads, wherein one or more units each consists of a vertical support member resting on a rigid bed and accommodating a lifting member vertically displaceable in said support member; supporting elements shorter than the length of displacement of said lifting member, one such supporting element being insertable into said support member above said lifting member in its lowered position in order, upon displacement of said lifting member upwards, to be introduced into a vertical guiding tube being aligned with said support member, said load resting on top of the uppermost supporting element in said guiding tube; and a support plate insertable between the guiding tube and the support member in engagement with its top end surface, said support plate allowing vertical dis- placement of the supporting element resting on said lifting member when said supporting element is partly situated within said support member, but preventing downward displace- ment of said supporting element when it is completely inserted into said guiding tube.
355325
Ab Resmastservice
Goudreau Gage & Associates
LandOfFree
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