Person lifting apparatuses including lifting straps and methods of operation based on current draw
AssigneeLiko Research & Development AB
InventorsJoseph Tari, Derek Strassle
Life of this patent
Estimating the term…
Abstract
A person lifting apparatus includes a first lifting strap feeding device including a first drum and a first lifting strap wound on the first drum. A second lifting strap feeding device includes a second drum and a second lifting strap wound on the second drum. A controller is communicatively coupled to the first lifting strap feeding device and to the second lifting strap feeding device. The controller includes logic that controls operation of the first lifting strap feeding device and the second lifting strap feeding device based on a comparison of current draws of the first lifting strap feeding device and the second lifting strap feeding device.
Claims20
A person lifting apparatus comprising:
- a first lifting strap feeding device comprising a first drum and a first lifting strap wound on the first drum;
- a second lifting strap feeding device comprising a second drum and a second lifting strap wound on the second drum;
- and
- a controller communicatively coupled to the first lifting strap feeding device and to the second lifting strap feeding device, the controller includes logic that controls operation of the first lifting strap feeding device and the second lifting strap feeding device based on a comparison of current draws of the first lifting strap feeding device and the second lifting strap feeding device.
A method of operating a person lifting apparatus, the method comprising:
- controlling operation of a first lifting strap feeding device and a second lifting strap feeding device thereby tilting a patient supported by lifting straps connected to the first lifting strap feeding device and the second lifting strap feeding device;
- determining a current draw of the first lifting strap feeding device during operation using a controller;
- determining a current draw of the second lifting strap feeding device during operation using the controller;
- comparing the current draws of the first lifting strap feeding device and the second lifting strap feeding device;
- and
- the controller controlling operation of the first lifting strap feeding device and the second lifting strap feeding device based on the comparison of the current draws.
A person lifting apparatus comprising:
- a first lifting strap feeding device comprising a first drum and a first lifting strap wound on the first drum;
- a second lifting strap feeding device comprising a second drum and a second lifting strap wound on the second drum;
- and
- a controller communicatively coupled to the first lifting strap feeding device and to the second lifting strap feeding device, the controller includes logic that prevents operation of the first lifting strap feeding device and the second lifting strap feeding device is an imbalance condition is detected using a comparison of current draws of the first lifting strap feeding device and the second lifting strap feeding device.
Dependencies are inferred from the claim text.