Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – With floor pit opening for support and safety cover therefor
Patent
1996-07-18
1998-04-21
Noland, Kenneth
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
With floor pit opening for support and safety cover therefor
254 89H, B66F 700
Patent
active
057408866
ABSTRACT:
A method of retrofit includes the steps of removing the pre-existing superstructure of the lift system. A hole is then cut in the encasement securing the upper portion of the pre-existing casing. Thereafter, all hydraulic fluid is drained. Thereafter, the pre-existing gland flange is removed. The old plunger is also removed. After the same has been accomplished, there is then provided a high pressure low volume hydraulic cylinder and associated hydraulic line, all of which is positioned within the casing of the pre-existing system. The bottom of the high pressure hydraulic cylinder is mechanically locked to the base of the pre-existing outer casing. A new pump and hydraulic lines are then installed. A new plunger is then added to the new hydraulic cylinder and, with it, an appropriate bearing and guide mechanism which uses the pre-existing casing as an outer guide means for the new plunger. Alternatively, an upper bearing structure is then provided between the top of the pre-existing casing and the new plunger. The hole cut in the concrete encasement is filled with newly placed concrete. The pre-existing superstructure is then secured to the top of the new plunger and cylinder structure.
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Advantage Lift Systems Inc.
Noland Kenneth
Seidman Stephanie L.
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