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US 7,802,328 B2Granted
Hoist device with sling attachment detection
AssigneeHuntleigh Technology Limited
InventorHans Lingegard
Life of this patent
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Abstract
A hoist device for lifting persons, said hoist device comprising holding means (27); and a hoist sling comprising attachment means (37), said attachment means (37) being connectable to the holding means (27). Any of the attachment means (37) and the holding means (27) comprises a reference object (8), and any of the attachment means (37) and the holding means (27) comprises sensing means (7) configured to detect the reference object (8), for determining if the attachment means (37) are properly connected to the holding means (27).
Claims20
A hoist device for lifting persons, the hoist device including:
- a. a hoist sling having a sling attachment thereon from which the hoist sling can be supported, the sling attachment having an aperture defined therein,
- b. a sling holder configured to hold the sling attachment of the hoist sling, the sling holder thereby supporting the hoist sling from the sling attachment with the aperture fitting over at least a portion of the sling holder,
- c. a reference object included on one of the sling attachment and the sling holder,
- d. a sensor included on one of the sling attachment and the sling holder, wherein the sensor:
- (1) detects the presence of the reference object, and
- (2) provides an output signal indicative of proper sling installation when the sling attachment and the sling holder are connected with the sling holder stably holding the sling attachment.
3 more elements
Dependencies are inferred from the claim text.