Beds – With means for relocating an invalid – With a hoisting – lifting – elevating – or raising device
Patent
1997-03-18
1998-12-08
Grosz, Alexander
Beds
With means for relocating an invalid
With a hoisting, lifting, elevating, or raising device
5 861, A61G 710
Patent
active
058453482
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to an invalid hoist.
SUMMARY OF THE INVENTION
According to the invention there is provided an invalid hoist comprising a telescopic mast having a lower part and an upper part, power operated means for raising and lowering the upper part relative to the lower part, a lifting arm pivotably connected to the upper part of the mast, the lifting arm having a sling hanger or at least one sling attachment point at or adjacent to one end thereof, and a manually extendable/retractable stay between the lifting arm and the lower part of the mast, the lifting arm being pivotably connected to the upper part of the mast at a position intermediate its ends and the extendable/retractable stay being connected to the lifting arm on the side of the pivotable connection between the lifting arm and the upper part of the mast remote from said one end of the lifting arm.
Preferably, the mast is mounted on a mobile chassis.
The stay can be extended, if the power operated means fails with the upper part of the mast in a raised position, to lower a user to a position in which he/she can be released from a sling supported by the lifting arm. This is a very useful safety feature not hitherto incorporated in a power operated invalid hoist.
The stay can also be extended, when the upper mast part is in its lowermost position, to move the lifting arm to a storage position alongside the telescopic mast.
Preferably the stay includes two threaded members which are rotatable relative to one another to extend and retract the stay.
Where a sling hanger is supported by the free end of the lifting arm, the sling hanger may be pivotable about a horizontal axis and may have two spaced sling attachment points on one side of the axis and at least one sling attachment point on the other side of the axis to support a body support sling.
Preferably, a handle is provided on the lifting arm for allowing an operator to move the hoist along a floor. In this case, the handle may extend at least part way along each of two opposite side of the lifting arm and may have a transverse portion adjacent to the rear end of the lifting arm.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will now be more particularly described, by way of example, with reference to the accompanying drawings in which:
FIG. 1 is a side view of one embodiment of an invalid hoist according to the invention, the hoist being shown in an in use condition,
FIG. 2 is a plan view of the hoist shown in FIG. 1,
FIG. 3 is a perspective view of the hoist shown in FIGS. 1 and 2 but shown in a collapsed storage condition,
FIG. 4 is a sectional view through the mast and showing the chassis of the hoist with the cover removed, and
FIG. 5 is a fragmentary side view, partly in section, showing a part of the hoist shown in FIG. 1, with the covers which give the lifting arm and lower mast part a better aesthetic appearance removed.
DETAILED DESCRIPTION OF THE INVENTION
Referring firstly to FIGS. 1 to 4 of the drawings, the invalid hoist shown therein comprises a mobile chassis 10, a lifting column 11 upstanding from the chassis 10 and a lifting arm 12 supported by the lifting column 11.
As shown in FIG. 4, the chassis 10 comprises a main chassis portion 9 extending transversely of the hoist and two side members 14. The side members 14 are pivotable relative to the main chassis portion 9 in respective vertical planes between a first in use position (as shown in FIGS. 1,2 and 4) in which they project forwardly from the main portion 9 and a second storage position (as shown in FIG. 3) in which they extend parallel or substantially parallel to the lifting column 11 and in which they lie in a common vertical plane offset slightly from the lifting column 11. The side members 14 are also pivotable relative to the main chassis portion 9 (when in an in use position) in a common horizontal plane to increase the width of the front opening of the chassis to fit around, for example, a wheelchair. To achieve this, connecting arms 56 are provided between the main cha
REFERENCES:
patent: 5185895 (1993-02-01), Gagne et al.
patent: 5365621 (1994-11-01), Blain
Dunn Robert
Somerton Bruce Edward
Arjo Limited
Grosz Alexander
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