B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
254/125
B66F 11/00 (2006.01) B66F 1/02 (2006.01)
Patent
CA 1037941
Abstract of the Disclosure: To produce repeated movements by means of alternately operating hydraulic jacks consisting of cylinder and piston units and having both supply sides and pressure sides, the pressure sides of the jacks are interconnected in such a manner as to form a closed pressure medium system while the supply sides are connected to a source of pressure medium in such a manner as to be alternately supplied with pressure medium for the movement contemplated, the pressure medium in the closed system being caused to flow between the pressure sides when the movement is performed. To shift a load by means of a group of simultaneously operating hydraulic jacks, individual jacks are temporarily relieved of load during the shifting movements thereof in that the support for said jacks is moved during shifting in a direction toward the load. To return a loaded or unloaded lifting element by means of alternately operating hydraulic jacks consisting of cylinder and piston units, the jacks having both supply sides and pressure sides as well as wedge-type jaws serving to bring about the engagement at the lifting operation, a counterweight attached to said lifting element is lifted in that the pressure sides are alternately supplied with pressure medium for the lifting operation and in that the jacks are provided with wedge-type jaws acting oppositely to the wedge-type jaws serving to realize the lifting operation. The return can also be brought about in that the jacks are provided with wedge-type jaws acting oppositely to the wedge- type jaws serving to realize the lifting operation, and in that the one sides of the jacks are interconnected in such a manner as to form a closed pressure medium system, while the other sides of the jacks are connected to a source of pressure medium in such a manner as to be alternately supplied with pressure medium for the movement of the lifting element, the pressure medium in the closed system being caused to flow via a counterpressure valve or like means between the two sides of the closed system when the movement is performed.
213910
LandOfFree
Method and apparatus for shifting loads does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for shifting loads, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for shifting loads will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-925815