The invention relates generally to assistance devices to aid users with restricted mobility to put on clothing, such as jackets.
People with restricted mobility may have difficulties putting on jackets. Typically, when one shoulder of a jacket is put on, the other shoulder of the jacket will drape down below that shoulder. Users will then reach behind their back to grab the jacket with the arm not in a jacket sleeve. This can be difficult for users with restricted mobility, such as that resulting from age, injury, or other conditions that limit the flexibility of the arms and/or the ability to grasp.
Embodiments describe an assistance device for putting on a jacket as well as a method for using the assistance device to put on the jacket.
The assistance device can include an elongated bar and magnetic connection elements (such as magnets or metallic elements) positioned at each end of the elongated bar. The assistance device can be magnetically attached to corresponding magnetic connection elements at the shoulders of a jacket.
After the assistance device is magnetically attached to the corresponding magnetic connection elements at the shoulders of a jacket, the user will put on one of the shoulders of the jacket. The inventors have found that as the jacket is placed over one shoulder, the other end of the assistance device (and attached portions of the jacket) will tend to be biased toward the other side of the user. This makes it easier for users to grab the other side of the jacket since it extends toward the arm not in the jacket sleeve reducing the distance that the user needs to move this arm behind their back to grab the jacket. This is especially valuable for users with restricted mobility who find it hard to put on jackets without the assistance device.
In one embodiment, the distance between the magnetic connection elements on the elongated bar may be designed to be shorter than the fully extended distance between the corresponding magnetic connection elements in the jacket so that when the magnetic connection elements of the elongated bar magnetically engage with the corresponding magnetic connection elements of the jacket, the fabric of the jacket between the corresponding magnetic connection elements is slack. When the jacket is put on both shoulders, the fabric of the jacket will become taut and a shear force will be created which will cause one of the magnetic connection elements of the bar to magnetically disengage from a corresponding magnetic connection element of the jacket.
In one embodiment, the assistance device can be collapsible to make it more portable. For example, a collapsible assistance device can be telescoped, fold-able, or use sections that slide apart.
The elongated bar 106 can be made of any material, such as wood, metal, or plastic. In an embodiment, the elongated bar 106 is stiff so as to resist bending or folding. The elongated bar 106 can be unitary or composed of multiple elements. In one embodiment described below, the elongated bar 106 is collapsible to aid in portability.
In one embodiment, the magnetic connection element 102 and corresponding magnetic connection element 202 are both be magnets. In another embodiment, one of the magnetic connection element 102 or the corresponding magnetic connection element 202 is a metal element and the other is a magnet. In this way, a magnetic engagement can be made between magnetic connection element 102 and corresponding magnetic connection element 202 when they are close together. In one embodiment, the magnet is a permanent magnet such as a neodymium magnet, a samarium-cobalt magnet, a ceramic magnet or an alnico magnet.
In one embodiment, the magnetic connection element 102 is covered by a covering material 206 such as tape, fabric, hardened glue, or plastic. This covering material 206 can aid in breaking the magnetic engagement using a shear force as described below. An optional protective material 208 such as foam can be used to minimize wear on the jacket and covering material 206. due to the disengagement of magnetic connection element 102 and corresponding magnetic connection element 202. It is believed that the edges of the magnetic connection element 102 and/or corresponding magnetic connection element 202 may tend to cause fabric damage in some cases during magnetic disengagement which may be prevented with the optional protective material 208.
The patch 220 can be attached to the inside of the jacket. The attachment can be sewed on, attached with adhesive, or some other attachment method can be used. As an alternative to using a patch, the corresponding magnetic connection element 202 can be integrally formed into the jacket. In one embodiment, the assistance device 100 can be provided as part of a kit along with a jacket with the corresponding magnetic connection elements, or as part of a kit along with patches with the corresponding magnetic connection elements which are designed to be attached to the jacket.
In step 402, a user puts on one of the shoulders of the jacket. The inventors have determined that this results in the assistance device 100 and the attached jacket 300 tilting or biasing toward the user's other side. This may be due to the connection of the assistance device 100 to shoulder regions 302 and 304 of a jacket 300 preventing the assistance device 100 from dropping directly below the shoulder under gravity. Gravity would then naturally cause the assistance device to pivot towards the user's back. Alternately or in combination, the user may naturally adjust the shoulder region of jacket while putting on that shoulder so as to move the weight of the assistance device 100 toward the user's center of mass to better support the weight of the assistance device 100 (similar to how a backpack supported by a single shoulder will naturally tilt). It is also possible that user's shoulder blade interacts with the bar 106 of the assistance device to cause or contribute to the tilt. In any event, the method and device does not depend on any specific explanation for this phenomenon.
In step 404, the user can grab the jacket at using their free arm. This will be easier than grabbing a jacket that has draped directly below the shoulder, especially for users with reduced mobility.
In step 406, the user puts on the second shoulder of the jacket. This will cause the fabric between the shoulder regions 302 and 304 to become taut and one of the ends of the assistance device to magnetically disengage from the jacket due to the shear forces on the ends of the assistance device 100.
Typically, magnets are much easier to to pull apart in shear. The required shear force to separate the magnetic connection regions can be as low as 10% or lower of the required normal force to separate the magnetic connection regions due to properties of the covering material 206 and the jacket fabric 210. Resistance in shear is proportional to the coefficient of friction between the contacting materials. If the perpendicular (or normal) force required to pull apart magnets is N, then the required shear force required to pull apart magnets is μN, with μ being the coefficient of friction. The covering material 206 can be selected to be relatively smooth so that the resulting coefficient of friction between the covering material 206 and jacket fabric 210 is low.
Typically, one of the connection points will start to separate first, weakening the magnetic connection at that connection point while the magnetic connection at the other connection point remains intact. This will result in the assistance device 100 becoming fully disengaged from one connection point while remaining attached to the other.
The assistance device 100 will then tend to rotate under the force of gravity to the user's side and can be removed by pulling down on the assistance device. Pulling down on the assistance device 100 will produce a shear force such that assistance device 100 can be easily removed.
The assistance device 100 can be collapsible for portability with the assistance device 100 being expanded before use and collapsed after use. For example, the bar can be telescoped, foldable, or use sections that slide apart.
The foregoing description of the present invention has been provided for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations will be apparent to the practitioner skilled in the art. The embodiments were chosen and described in order to best explain the principles of the invention and its practical application, thereby enabling others skilled in the art to understand the invention for various embodiments and with various modifications that are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the following claims and their equivalence.
Number | Name | Date | Kind |
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3384408 | Denis | May 1968 | A |
20100200622 | Fusaro | Aug 2010 | A1 |
20140088338 | Chang | Mar 2014 | A1 |
20160278460 | Hunter | Sep 2016 | A1 |
Number | Date | Country |
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1358829 | Apr 2003 | EP |
3182255 | Mar 2013 | JP |
Entry |
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Amazon Listing for Telescopic Magnetic Pickup Tool first available on Jan. 1, 2018 as indicated on p. 3 of 8, retrieved by Examiner at https://www.amazon.com/VASTOOLS-Telescopic-Magnetic-Pickup-Extendable/dp/B073PBR5PL/ref=sr_1_1_sspa?dchild=1&keywords=magnet+grabber&qid on Mar. 24, 2021. (Year: 2018). |
Frigits listing dated Dec. 14, 2006 retrieved by Examiner at http://www.superdairyboy.com/Toys/frigits.html on Mar. 24, 2021 (Year: 2006). |
The Universe Today Article published by Tega Jessa on Sep. 16, 2010 and retrieved by the Examiner at https://www.universetoday.com/73723/what-are-magnets-made-of/on Sep. 3, 2021 (Year: 2010). |
Number | Date | Country | |
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20210068571 A1 | Mar 2021 | US |