The present specification generally relates to sling bars and, in particular to sling bars for subject lifting systems, such as mobile lifts and/or overhead lifts, and methods for operating the same.
Subject lifting systems, such as mobile lifts and overhead lifts, are used to transport a subject for any number of reasons. 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 subject when the drum is rotated and the lift strap is either wound up onto the lift drum, or paid out from the lift drum.
As another example, mobile lifts may include a lift device positioned on one or more wheels to transport a subject from one location to another. A sling bar may be attached to the overhead lifts and the mobile lifts to connect a subject to the overhead lift or the mobile lift, such as by a sling, a vest, or the like attached to the sling bar.
Some conventional sling bars may require a user, such as a caregiver, to manipulate a sling attachment portion of the sling bar to attach a sling, a vest, or the like to the sling bar. Conventional sling bar attachment portions may require the use of both hands to manipulate the attachment portion to securely attach the sling or vest to the sling bar attachment portion, and it may be difficult to attach the sling or vest to the sling bar attachment portion while simultaneously manipulating the sling bar attachment portion.
Accordingly, a need exists for alternative sling bar attachment portions that may be manipulated with one hand to securely attach a sling or vest to the sling bar attachment portion.
In one embodiment, a sling bar includes a bar extending between a first end and a second end, and a sling attachment member positioned at at least one of the first end and the second end, the sling attachment member including a bar attachment portion coupled to the bar, a lift hook extending outward from the bar attachment portion, the lift hook defining an upward-facing opening, and a latch member pivotally coupled to one of the bar attachment portion or the lift hook, where the latch member is repositionable between a closed position, in which the latch member extends across the upward-facing opening and engages the other of the lift hook or the bar attachment portion, and an open position, in which the latch member is spaced apart from the upward-facing opening and the other of the lift hook or the bar attachment portion.
In another embodiment, a subject support lift includes a lift actuator, a sling bar operatively coupled to the lift actuator, the sling bar including a bar extending between a first end and a second end, and a sling attachment member positioned at at least one of the first end and the second end, the sling attachment member including a bar attachment portion coupled to the bar, a lift hook extending outward from the bar attachment portion, the lift hook defining an upward-facing opening, and a latch member pivotally coupled to one of the bar attachment portion or the lift hook, where the latch member is repositionable between a closed position, in which the latch member extends across the upward-facing opening and engages the other of the lift hook or the bar attachment portion, and an open position, in which the latch member is spaced apart from the upward-facing opening and the other of the lift hook or the bar attachment portion.
In yet another embodiment, a method for attaching a sling to a subject support lift includes attaching a sling bar to the subject support lift, the sling bar including a bar and a sling attachment member coupled to the bar, pivoting a latch member of the sling attachment member about a pivot member from a closed position, in which the latch member extends across an upward-facing opening defined by a lift hook of the sling attachment member, to an open position, in which the latch member is spaced apart from the upward-facing opening, positioning a loop of the sling within the lift hook of the sling attachment member, and pivoting the latch member of the sling attachment member from the open position to the closed position.
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 bars 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. Embodiments described herein are directed to sling bars including a sling attachment member coupled to a bar, the sling bar attachment member including a bar attachment portion coupled to the bar, and a lift hook extending outward from the bar attachment portion. The lift hook generally defines an upward-facing opening, in which a loop of a sling may be positioned to connect the sling to the sling bar. The sling attachment member further includes a latch member that is selectively repositionable between a closed position, in which the latch member extends across an upward-facing opening defined by the lift hook, and an open position, in which the latch member is spaced apart from the upward-facing opening. The latch member may be manipulated with one hand, assisting a caregiver in connecting the sling to the sling bar. The lift hook may also assist in retaining the loop of the sling within the lift hook to maintain a connection between the sling and the sling bar. Various embodiments of sling bar devices for person lifting devices and methods for operating the same will be described herein with specific reference to the appended drawings.
As used herein, the term “longitudinal direction” refers to the forward-rearward direction of the sling bar (i.e., in the +/−X-direction as depicted). The term “lateral direction” refers to the cross-direction of the sling bar (i.e., in the +/−Y-direction as depicted), and is transverse to the longitudinal direction. The term “vertical direction” refers to the upward-downward direction of the sling bar (i.e., in the +/−Z-direction as depicted), and is transverse to the lateral and the longitudinal directions.
Referring initially to
Referring to
The lift hook 140 extends outward from the bar attachment portion 130 in the lateral direction as depicted. The lift hook 140 generally extends outward in the lateral direction and upward in the vertical direction, defining an upward-facing opening 142 that permits access to an interior bounded by the lift hook 140. Loops of a sling may be positioned on the lift hook 140, such as by placing a portion of the loop through the upward-facing opening 142, as described in greater detail herein.
In the embodiment depicted in
The latch member 160 generally includes a lever portion 164 and a tongue portion 162 that extends outward from the tongue portion 162 in the lateral direction. In the embodiment depicted in
Referring collectively to
The latch member 160 may be repositionable from the closed position to the open position by depressing the lever portion 164, causing the latch member 160 to rotate about the pivot member 190 moving the tongue portion 162 upward in the vertical direction away from the upward facing-opening 142. In embodiments, the latch member 160 is repositionable from the closed position to the open position by a user depressing the lever portion 164 downward in the vertical direction with a single digit, for example a user's thumb, such that the user may manipulate the latch member 160 from the closed position to the open position with a single hand. Because a user may manipulate the latch member 160 with a single hand, the user's other hand is free to perform other tasks, such as manipulating a loop of a sling into the lift hook 140. In this way, the latch member 160 may reduce the burden on a user to secure a loop of a sling to the sling bar 100 as compared to conventional configurations, which may require both of a user's hands to secure the loop of the sling to the sling bar.
In some embodiments, the sling attachment member 120 includes a biasing member 180 that is engaged with the latch member 160 and biases the latch member 160 into the closed position. The biasing member 180 may include any suitable construction to bias the latch member 160 into the closed position, and may include a spring, such as a compression spring, a torsion spring, or an extension spring. In other embodiments, the biasing member 180 may be omitted, and the latch member 160 may be moved to the closed position from the open position under the force of gravity.
Referring particularly to
Referring collectively to
In embodiments, the tongue portion 162 of the latch member 160 is shaped to complement the inward-facing surface 150 of the lift hook 140. In particular, the latch member 160 includes a top end 166 and a bottom end 168 positioned below the top end 166 in the vertical direction, where the top end 166 extends farther outward from the bar attachment portion 130 than the bottom end 168. In this way, the tongue portion 162 of the latch member 160 may form a surface that is complementary to the inward facing surface 150 of the lift hook 140.
Referring to
Referring to
It should now be understood that embodiments described herein are directed to sling bars including a sling attachment member coupled to a bar, the sling bar attachment member including a bar attachment portion coupled to the bar, and a lift hook extending outward from the bar attachment portion. The lift hook generally defines an upward-facing opening, in which a loop of a sling may be positioned to connect the sling to the sling bar. The sling attachment member further includes a latch member that is selectively repositionable between a closed position, in which the latch member extends across an upward-facing opening defined by the lift hook, and an open position, in which the latch member is spaced apart from the upward-facing opening. The latch member may be manipulated with one hand, assisting a caregiver in connecting the sling to the sling bar. The lift hook may also assist in retaining the loop of the sling within the lift hook to maintain a connection between the sling and the sling bar.
Embodiments can be described with reference to the following numbered clauses, with preferred features laid out in the dependent clauses:
1. A sling bar comprising a bar extending between a first end and a second end; and a sling attachment member positioned at at least one of the first end and the second end, the sling attachment member comprising: a bar attachment portion coupled to the bar; a lift hook extending outward from the bar attachment portion, the lift hook defining an upward-facing opening; and a latch member pivotally coupled to one of the bar attachment portion or the lift hook, wherein the latch member is repositionable between a closed position, in which the latch member extends across the upward-facing opening and engages the other of the lift hook or the bar attachment portion, and an open position, in which the latch member is spaced apart from the upward-facing opening and the other of the lift hook or the bar attachment portion.
2. The sling bar of the preceding clause, further comprising a biasing member coupled to the latch member, wherein the biasing member biases the latch member into the closed position.
3. The sling bar of clause 1 or 2, wherein the bar attachment portion is selectively coupled to and positioned within a cavity of the bar.
4. The sling bar of any of clauses 1-3, wherein the latch member is pivotally coupled to the bar attachment portion at a pivot member.
5. The sling bar of clause 4, wherein the latch member comprises a lever portion positioned inboard of the pivot member and a tongue portion that extends across the upward-facing opening in the closed position.
6. The sling bar of clause 5, wherein the lift hook comprises an engagement member extending inward toward the upward-facing opening, the engagement member comprising an upward-facing contact face, wherein the tongue portion of the latch member engages the upward-facing contact face in the closed position.
7. The sling bar of clause 6, wherein the engagement member further comprises an outward-facing contact face that extends in a plane that is transverse to the upward-facing contact face, wherein the tongue portion of the latch member engages the outward-facing contact face in the closed position.
8. The sling bar of any of clauses 5-7, wherein the lift hook comprises an inward-facing surface that is oriented to face inward toward the bar attachment portion, the inward-facing surface comprising a top end and a bottom end positioned below the top end, wherein the top end is farther away from the bar attachment portion than the bottom end.
9. The sling bar of any of clauses 5-8, wherein the latch member comprises a top end and a bottom end positioned below the top end, wherein the top end extends farther outward from the bar attachment portion than the bottom end.
10. A subject support lift comprising: a lift actuator; a sling bar operatively coupled to the lift actuator, the sling bar comprising: a bar extending between a first end and a second end; and a sling attachment member positioned at at least one of the first end and the second end, the sling attachment member comprising: a bar attachment portion coupled to the bar; a lift hook extending outward from the bar attachment portion, the lift hook defining an upward-facing opening; and a latch member pivotally coupled to one of the bar attachment portion or the lift hook, wherein the latch member is repositionable between a closed position, in which the latch member extends across the upward-facing opening and engages the other of the lift hook or the bar attachment portion, and an open position, in which the latch member is spaced apart from the upward-facing opening and the other of the lift hook or the bar attachment portion.
11. The subject support lift of the preceding clause, further comprising a biasing member coupled to the latch member, wherein the biasing member biases the latch member into the closed position.
12. The subject support lift of clause 10 or 11, wherein the latch member is pivotally coupled to the bar attachment portion at a pivot member.
13. The subject support lift of clause 12, wherein the latch member comprises a lever portion positioned inboard of the pivot member and a tongue portion that extends across the upward-facing opening in the closed position.
14. The subject support lift of clause 13, wherein the lift hook comprises an engagement member extending inward toward the upward-facing opening, the engagement member comprising an upward-facing contact face, wherein the tongue portion of the latch member engages the upward-facing contact face in the closed position.
15. The subject support lift of clause 14, wherein the engagement member further comprises an outward-facing contact face that extends in a plane that is transverse to the upward-facing contact face, wherein the tongue portion of the latch member engages the outward-facing contact face in the closed position.
16. The subject support lift of any of clauses 13-15, wherein the lift hook comprises an inward-facing surface that is oriented to face inward toward the bar attachment portion, the inward-facing surface comprising a top end and a bottom end positioned below the top end, wherein the top end is farther away from the bar attachment portion than the bottom end.
17. The subject support lift of any of clauses 13-16, wherein the latch member comprises a top end and a bottom end positioned below the top end, wherein the top end extends farther outward from the bar attachment portion than the bottom end.
18. A method for attaching a sling to a subject support lift, the method comprising: attaching a sling bar to the subject support lift, the sling bar comprising a bar and a sling attachment member coupled to the bar; pivoting a latch member of the sling attachment member about a pivot member from a closed position, in which the latch member extends across an upward-facing opening defined by a lift hook of the sling attachment member, to an open position, in which the latch member is spaced apart from the upward-facing opening; positioning a loop of the sling within the lift hook of the sling attachment member; and pivoting the latch member of the sling attachment member from the open position to the closed position.
19. The method of the preceding clause, wherein pivoting the latch member from the closed position to the open position comprises depressing a lever portion of the latch member that is positioned inboard of the pivot member.
20. The method of clause 18 or 19, wherein pivoting the latch member from the open position to the closed position comprises engaging a tongue portion of the latch member with an engagement member of the lift hook that extends inward toward the upward-facing opening.
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 U.S. Provisional Patent Application Ser. No. 62/694,740, entitled “Sling Bars for Lifting Systems and Methods for Operating Sling Bars” and filed Jul. 6, 2018, the contents of which are incorporated by reference herein in their entirety.
Number | Date | Country | |
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62694740 | Jul 2018 | US |