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US 6,098,759 AGranted
Hydraulic elevator
AssigneeInventio AG
InventorsEileen W. Rossman, Karl B. Orndorff, Scott C. Conrey
Life of this patent
Estimating the term…
Abstract
A hydraulic elevator having a hydraulic jack which acts directly on the elevator car. To reduce the amount of building work associated with this elevator concept, the hydraulic jack projects through the car floor into the car. The jack and the car are fastened together at the car floor by a supporting plate attached to the jack cylinder. If the jack is fitted with a mechanical synchronization device, the ends of the ropes or chains which until now have been fastened to the building also pass upwards through the car to a crossbeam to which they are fastened.
Claims9
A hydraulic elevator, comprising:
- a car having a floor;
- at least one door;
- a guide rail, the car being arranged to ride along the guide rail so that the car is guided along its hoisting travel;
- a hydraulic jack having a cylinder and at least one piston which is telescopically extendable from the cylinder, the jack being fixed in position at one end;
- and
- means for fastening the cylinder to the floor of the car so that the car moves with the cylinder in its direction of travel, the car floor having an opening therein through which the telescopic jack projects into the car.
3 more elements
Dependencies are inferred from the claim text.