The present specification generally relates to sling bar devices and, in particular sling bar devices for person lifting systems, such as mobile lifts and/or overhead lifts, and methods for operating the same.
Person lifting systems, such as mobile lifts and overhead lifts are often used to transport patients for any number of reasons. For example, overhead lifts may operate like a winch and include a lift motor and a lift drum that is driven by the lift motor. A lift strap may be coupled to the lift drum for lifting and lowering a patient when the drum is rotated and the lift strap is either wound up onto the lift drum or paid out from the lift drum. A sling bar device may be connected to an end of the lift strap. The sling bar device may include a load hook that connects to a patient lift sling.
There are several different types of sling bar devices. One example of a sling bar device includes a cross bar that includes load hooks at opposite ends. These sling bar devices, however, are limited in their usage, requiring interchanging of sling bar devices for different circumstances. What is needed is a sling bar device having different configurations for usage in different circumstances.
According to one embodiment, a sling bar device includes a central hub and a plurality of sling bar arms extending outwardly from the central hub. At least one of the plurality of sling bar arms is rotatable about the central hub to move a connection location from one angular position to another angular position relative to the central hub.
According to another embodiment, a person lifting device includes a lift actuator and a sling bar device operatively connected to the lift actuator. The lift actuator raises and lowers the sling bar device. The sling bar device includes a central hub and a sling bar connector that extends outwardly from the central hub and that is connected to the accessory coupling. A plurality of sling bar arms extends outwardly from the central hub. At least one of the plurality of sling bar arms is rotatable about the central hub to move a connection location from one angular position to another angular position relative to the central hub.
According to another embodiment, a method of adjusting a sling bar device for lifting a person is provided. The method includes rotating a sling bar arm of the sling bar device about a central hub to move a connection location from one angular position to another angular position relative to the central hub. The sling bar device includes a plurality of sling bar arms extending outwardly from the central hub. The sling bar device is connected to a sling.
Additional features of the sling bar devices and methods for operating the sling bar devices described herein will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the embodiments described herein, including the detailed description which follows, the claims, as well as the appended drawings.
It is to be understood that both the foregoing general description and the following detailed description describe various embodiments and are intended to provide an overview or framework for understanding the nature and character of the claimed subject matter. The accompanying drawings are included to provide a further understanding of the various embodiments, and are incorporated into and constitute a part of this specification. The drawings illustrate the various embodiments described herein, and together with the description serve to explain the principles and operations of the claimed subject matter.
Reference will now be made in detail to embodiments of sling bar devices for person lifting devices and methods of operating the same, examples of which are illustrated in the accompanying drawings. Whenever possible, the same reference numerals will be used throughout the drawings to refer to the same or like parts. One embodiment of a person lifting device is schematically depicted in
Exemplary Person Lifting Device
Referring to
In one embodiment, the base 12 may further comprise a mast support 34 disposed on the cross support 20. In one embodiment, the mast support 34 may be a rectangular receptacle configured to receive the lift mast 14 of the person lifting device 10. For example, a first end of the lift mast 14 may be adjustably received in the mast support 34 and secured with a pin, threaded fastener, or a similar fastener coupled to adjustment handle 36. The pin or threaded fastener extends through the mast support 34 and into a corresponding adjustment hole(s) on the lift mast 14. Accordingly, the position of the lift mast 14 may be adjusted vertically (e.g., in the +/−Z direction on the coordinate axes shown in
The person lifting device 10 may further comprise a lift arm 40 which is pivotally coupled to the lift mast 14 at a lift arm pivot 42 at a second end of the lift mast 14 such that the lift arm 40 may be pivoted (e.g., raised and lowered) with respect to the base 12.
The person lifting device 10 may be a mechanized lifting device. Accordingly, raising and lowering the lift arm 40 with respect to the base 12 may be achieved using an actuator such as a lift actuator 56. In the embodiments shown, the lift actuator 56 is a linear actuator which comprises a motor 58 mechanically coupled to an actuator arm 60. More specifically, the motor 58 may include a rotating armature and the actuator arm 60 may include one or more threaded rods coupled to the armature such that, when the armature is rotated, the threaded rods are extended or retracted relative to one another and the actuator arm 60 is extended or retracted. In the embodiment shown in
In the embodiment shown in
While the embodiments described herein refer to the lift actuator 56 as including a motor 58 and an actuator arm 60, it will be understood that the actuator may have various other configurations and may include a hydraulic or pneumatic actuator comprising a mechanical pump or compressor, or a similar type of actuator. Further, in other embodiments, where the lifting device is a cable-based lift system, the actuator may be a motor which pays out and/or takes-up cable thereby raising and/or lowering an attached load. Accordingly, it will be understood that various other types of actuators may be used to facilitate raising and lowering the lift arm and/or an attached load with respect to the base 12.
Still referring to
Sling Bar Device
Referring to
Sling bar arm 82 includes an arm portion 90 and a lift hook portion 92 including a lift hook 94 providing a connection location that can be used to connect to, for example, straps of a patient sling or other person support structure. Likewise, sling bar arm 84 includes an arm portion 96 and a lift hook portion 95 including a lift hook 98 providing another connection location that can also be used to connect to a person support structure. The sling bar arm 82 and the sling bar arm 84, in the illustrated example, are aligned axially (i.e., lengthwise) to provide a straight bar structure with the sling bar connector arms 82 and 84 extending from opposite sides of the central hub 76 and connection locations that are axially aligned. As can be seen, in this embodiment, the arm portions 90 and 96 are also vertically straight and do not curve. However, in other embodiments, the arm portions 90 and 96 may have a curve such that ends 100 and 102 of the arm portions 90 and 96 are located below ends 104 and 106 connected to the central hub 76.
Sling bar arm 86 includes an arm portion 108 and a lift hook portion 110 including a lift hook 112 providing a connection location that can be used to connect to a person support structure. Likewise, sling bar arm 88 includes an arm portion 114 and a lift hook portion 116 including a lift hook 118 providing a connection location that can also be used to connect to a person support structure. The sling bar arm 86 and the sling bar arm 88, in the illustrated example, are aligned axially (i.e., lengthwise) to provide a straight bar structure with the sling bar connector arms 86 and 88 extending from opposite sides of the central hub 76 and connection locations that are axially aligned. As can be seen, in this embodiment, the arm portions 108 and 114 are vertically straight and do not curve. However, in other embodiments, the arm portions 108 and 114 may have a curve such that ends 120 and 122 of the arm portions 108 and 114 are located below ends 124 and 126 connected to the central hub 76.
As shown by
Referring to
The central hub portions 130, 132, 134 and 136 may be stacked, one on top of another, as shown by
Referring also to
In the example of
It should be noted that the arrangement of the sling bar arms 82, 84, 86 and 88 and their respective connection locations can be used to set a person's sitting posture within a sling. For example, use of two connection locations may provide for a more upright sitting posture. Conversely, use of four connection locations may provide for a more reclined sitting posture.
Referring to
The sling bar arms 82, 84, 86, 88 may be formed of a solid metal, such as, for example, steel, titanium, aluminum, alloys or any other metal that is capable of supporting a patient under the desired circumstances. In some embodiments, the sling bar arms 82, 84, 86, 88 are formed of a combination of polymers and metals. The arm portions 90, 96, 108 and 114 may be a single solid beam having a continuous solid cross-section. In other embodiments, the arm portions 90, 96, 108, 114 may be hollow and include a system of trusses therewithin or the arm portions 90, 96, 108, 114 may be fully hollow forming tubes.
Referring to
Referring to
In the embodiment of the person lifting device shown in
The above-described sling bar lifting devices are built up by sling bar arms that can be moved around a central hub to a variety of positions to locate connection locations (e.g., the lift hooks) at desired locations. It should be noted that while four sling bar arms are illustrated, there may be more or less than four sling bar arms. Further, while sling bar arms with lift hooks are illustrated, other modules may be used, such as curved arms or other types of attachment points. In some embodiments, the sling bar arms may be locked into a particular position, for example, using a fastener. Referring briefly to
Embodiments can be described with reference to the following numbered clauses, with preferred features laid out in the dependent clauses:
1. A sling bar device includes a central hub and a plurality of sling bar arms extending outwardly from the central hub. At least one of the plurality of sling bar arms is rotatable about the central hub to move a connection location from one angular position to another angular position relative to the central hub.
2. The sling bar device of the preceding clause, wherein the at least one of the plurality of sling bar arms is a first sling bar arm, the first sling bar arm comprising an arm portion and a lift hook portion comprising a lift hook providing the connection location.
3. The sling bar device of the preceding clause, wherein the plurality of sling bar arms further comprises a second sling bar arm extending outwardly from the central hub, the second sling bar arm being rotatable about the central hub to move a connection location of the second sling bar arm from one angular position to another angular position relative to the central hub.
4. The sling bar device of the preceding clause, wherein the second sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the second sling bar arm.
5. The sling bar device of clause 3 or 4, wherein the first sling bar arm comprises a first central hub portion and the second sling bar arm comprises a second central hub portion, the first central hub portion and the second central hub portion forming at least part of the central hub.
6. The sling bar device of the preceding clause, wherein the first central hub portion is offset to a side of an elongated axis of the arm portion of the first sling bar arm and the second central hub portion is offset to a side of an elongated axis of the arm portion of the second sling bar arm such that the elongated axis of the arm portion of the first sling bar arm is axially aligned with the elongated axis of the arm portion of the second sling bar arm in a straight bar configuration.
7. The sling bar device of any of clauses 3-6, wherein the plurality of sling bar arms further comprises a third sling bar arm extending outwardly from the central hub, the third sling bar arm being rotatable about the central hub to move a connection location of the third sling bar arm from one angular position to another angular position relative to the central hub.
8. The sling bar device of the preceding clause, wherein the third sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the third sling bar arm.
9. The sling bar device of clause 7 or 8, wherein the plurality of sling bar arms further comprises a fourth sling bar arm extending outwardly from the central hub, the fourth sling bar arm being rotatable about the central hub to move a connection location of the fourth sling bar arm from one angular position to another angular position relative to the central hub.
10. The sling bar device of the preceding clause, wherein the fourth sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the fourth sling bar arm.
11. The sling bar device of clause 9 or 10, wherein the third sling bar arm comprises a third central hub portion and the fourth sling bar arm comprises a fourth central hub portion, the third central hub portion and the fourth central hub portion forming at least part of the central hub.
12. The sling bar device of the preceding clause, wherein the third central hub portion is offset to a side of an elongated axis of the arm portion of the third sling bar arm and the fourth central hub portion is offset to a side of an elongated axis of the arm portion of the fourth sling bar arm such that the elongated axis of the arm portion of the third sling bar arm is axially aligned with the elongated axis of the arm portion of the fourth sling bar arm in a straight bar configuration.
13. A person lifting device includes a lift actuator and a sling bar device operatively connected to the lift actuator. The lift actuator raises and lowers the sling bar device. The sling bar device includes a central hub and a sling bar connector that extends outwardly from the central hub and that is connected to the accessory coupling. A plurality of sling bar arms extends outwardly from the central hub. At least one of the plurality of sling bar arms is rotatable about the central hub to move a connection location from one angular position to another angular position relative to the central hub.
14. The person lifting device of the preceding clause, wherein the at least one of the plurality of sling bar arms is a first sling bar arm, the first sling bar arm comprising an arm portion and a lift hook portion comprising a lift hook providing the connection location.
15. The person lifting device of the preceding clause, wherein the plurality of sling bar arms further comprises a second sling bar arm extending outwardly from the central hub, the second sling bar arm being rotatable about the central hub to move a connection location of the second sling bar arm from one angular position to another angular position relative to the central hub.
16. The person lifting device of the preceding clause, wherein the second sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the second sling bar arm.
17. The person lifting device of clause 15 or 16, wherein the first sling bar arm comprises a first central hub portion and the second sling bar arm comprises a second central hub portion, the first central hub portion and the second central hub portion forming at least part of the central hub.
18. The person lifting device of the preceding clause, wherein the first central hub portion is offset to a side of an elongated axis of the arm portion of the first sling bar arm and the second central hub portion is offset to a side of an elongated axis of the arm portion of the second sling bar arm such that the elongated axis of the arm portion of the first sling bar arm is axially aligned with the elongated axis of the arm portion of the second sling bar arm in a straight bar configuration.
19. The person lifting device of any of clauses 15-18, wherein the plurality of sling bar arms further comprises a third sling bar arm extending outwardly from the central hub, the third sling bar arm being rotatable about the central hub to move a connection location of the third sling bar arm from one angular position to another angular position relative to the central hub.
20. The person lifting device of the preceding clause, wherein the third sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the third sling bar arm.
21. The person lifting device of clause 19 or 20, wherein the plurality of sling bar arms further comprises a fourth sling bar arm extending outwardly from the central hub, the fourth sling bar arm being rotatable about the central hub to move a connection location of the fourth sling bar arm from one angular position to another angular position relative to the central hub.
22. The person lifting device of the preceding clause, wherein the fourth sling bar arm comprises an arm portion and a lift hook portion comprising a lift hook providing the connection location of the fourth sling bar arm.
23. The person lifting device of clause 21 or 22, wherein the third sling bar arm comprises a third central hub portion and the fourth sling bar arm comprises a fourth central hub portion, the third central hub portion and the fourth central hub portion forming at least part of the central hub.
24. The person lifting device of the preceding clause, wherein the third central hub portion is offset to a side of an elongated axis of the arm portion of the third sling bar arm and the fourth central hub portion is offset to a side of an elongated axis of the arm portion of the fourth sling bar arm such that the elongated axis of the arm portion of the third sling bar arm is axially aligned with the elongated axis of the arm portion of the fourth sling bar arm in a straight bar configuration.
25. A method of adjusting a sling bar device for lifting a person is provided. The method includes rotating a sling bar arm of the sling bar device about a central hub to move a connection location from one angular position to another angular position relative to the central hub. The sling bar device includes a plurality of sling bar arms extending outwardly from the central hub. The sling bar device is connected to a sling.
26. The method of the preceding clause comprising lifting the sling bar device using a person lifting device.
27. The method of clause 25 or 26, wherein the person lifting device is an overhead lifting device or a mobile lifting device.
28. The method of any of clauses 25-27, wherein the at least one of the plurality of sling bar arms is a first sling bar arm, the first sling bar arm comprising an arm portion and a lift hook portion comprising a lift hook providing the connection location, the plurality of sling bar arms further comprising a second sling bar arm extending outwardly from the central hub, the method comprising rotating the second sling bar arm about the central hub to move a connection location of the second sling bar arm from one angular position to another angular position relative to the central hub.
Based on the foregoing, it should be understood that the sling bar devices described herein include a plurality of sling bar arms that are rotatable about a central hub to multiple positions. Moving the sling bar arms from one position to another position relocated connecting locations where a sling can be attached to the sling bar devices. The sling bar arms can be releasably locked in a desired position so that the sling bar arms no longer rotate about the central hub.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments described herein without departing from the spirit and scope of the claimed subject matter. Thus it is intended that the specification cover the modifications and variations of the various embodiments described herein provided such modification and variations come within the scope of the appended claims and their equivalents.
This application claims the benefit of priority to U.S. Provisional Application No. 62/523,319, titled “Sling Bar Devices for Person Lifting Systems and Methods of Operating Sling Bar Devices,” filed Jun. 22, 2017, the details of which are incorporated herein by reference in their entirety.
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Number | Date | Country | |
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20180369044 A1 | Dec 2018 | US |
Number | Date | Country | |
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62523319 | Jun 2017 | US |