This invention relates to the field of automated show covering devices. More particularly, this invention relates to an apparatus for automatically removing shoe covers.
The outer surfaces of shoes collect many undesirable substances such as dirt and mud while worn by a person on any given day. Many industries such as construction, farming, and manufacturing involve work environments in which the collection of undesirable materials on shoes is particularly substantial. The collection of such substances on shoes and the subsequent transfer of such substances to the interior of homes, buildings, or other structures by foot traffic is undesirable and may raise concerns regarding the cleanliness of the interior of such structures. Shoes may be removed before entering a home, building, or other similar structure to avoid such problems. However, in environments where such a practice of removing shoes from feet before entering such structures is not common or otherwise impractical, shoe coverings are often used.
Disposable shoe covers are commonly employed to avoid the need for persons to remove their shoes before entering homes, buildings, or other structures. However, placing shoe covers on shoes (particularly, unclean shoes) is inconvenient and may require a person to use hands to place a shoe cover over a shoe, thereby exposing the user's hands to the substances on the shoe. In addition to adding shoe covers to the feet or shoes of a user, the shoe covers that are put on must be removed. Therefore, there is a need for a mechanically reliable and simplified automatic shoe cover removal apparatus that is capable of automatic removal of a shoe cover from a user's shoe.
Additionally, there is need to perform the automatic removal of shoe covers in a manner that leaves little or no dirt, dust, germs, bacteria, fungus, viruses, toxins, drugs, small particulate matter, and/or other contaminants near or around the shoe cover removal apparatus. For example, certain activities in certain industries require what are often referred to as “clean rooms.” Often, shoe covers are used in a clean room and then must be removed in the clean room, because much of the work done in clean rooms includes the handling of materials (both non-living and living) that is desirably kept isolated and contained in such clean rooms. In some applications of an automatic shoe cover remover, it is desirable to prevent debris, such as dust, ash, and other small particulate matter from being blown out of the automatic shoe remover into an enclosed area thereby dirtying or otherwise contaminating the area. Also, in some applications it is desirable to prevent the debris on the removed shoe covers collected and stored by the shoe cover remover from further contaminating the clean area.
What is needed, therefore, is an apparatus capable of efficiently removing a shoe cover from the appendage of a wearer. Additionally, it is desirable that such a device does not contaminate the area around the removal apparatus with materials located on the removed shoe cover.
The above and other needs are met by apparatus which includes a trough for receiving a user's shoe. The trough includes a removal portal. The apparatus includes a vacuum with a motor, a suction portal, and an exhaust portal, where the vacuum is capable of causing a shoe cover to be removed from the shoe of a user when a user places a shoe covered by a shoe cover into the trough. An actuator is triggered by the placement of an object in the trough, the triggering of the actuator causing the vacuum to activate. The vacuum activation causes the shoe cover to be sucked through the removal portal and into a primary chamber. The primary chamber receives the removed shoe covers and includes a primary chamber input portal, and a primary chamber output portal. The primary chamber is disposed in a remote location with respect to the trough.
In another embodiment of the invention, the apparatus includes a first trough for receiving a user's shoe, the first trough including a first removal portal, and a second trough for receiving a user's shoe, the second trough including a second removal portal. The apparatus includes a vacuum with a motor, a suction portal, and an exhaust portal, where the vacuum is capable of causing a shoe cover to be removed from the shoe of a user when a user places a shoe covered by a shoe cover into one of the troughs. An actuator is triggered by the placement of an object in one of the troughs, the triggering of the actuator causing the vacuum to activate. The vacuum activation causes the shoe cover to be sucked through the removal portal and into a primary chamber. The primary chamber receives the removed shoe covers and includes a primary chamber input portal, and a primary chamber output portal.
In yet another embodiment, the apparatus includes a plurality of troughs for receiving a user's shoe, the plurality of troughs each including a removal portal and an actuator triggered by the placement of an object in the trough. The apparatus includes a vacuum with a motor, a suction portal, and an exhaust portal. A primary chamber is disposed remotely from the plurality of troughs. The primary chamber includes a lid, a primary chamber input portal, and a primary chamber output portal. The primary chamber input portal is connected to the removal portal and the primary chamber output portal is connected to the suction portal. A porous collection container is removably located in the primary chamber, the collection container for collecting removed shoe covers. The triggering of one of the actuators causes the vacuum to activate, wherein the activation of the vacuum is capable of causing a shoe cover to be removed from the shoe of a user when a user places a shoe covered by a shoe cover into one of the troughs, whereby such shoe cover is sucked through the removal portal and into the primary chamber.
Further features, aspects, and advantages of the present invention will become better understood by reference to the following detailed description, appended claims, and accompanying figures, wherein elements are not to scale so as to more clearly show the details, wherein like reference numbers indicate like elements throughout the several views, and wherein:
The trough 12 includes a removal portal 24 including a gasket 26. The vacuum device 14 includes a motor 28, a suction portal 30 and an exhaust portal 32. The motor 28 is preferably approved by Underwriters Laboratories, Inc. The motor 28 may be a bypass motor having a dual fan arrangement. The dual fan arrangement includes a first fan that sucks air through the suction portal 30 causing a main air flow and a second fan that draws air from outside the bypass motor for cooling the motor 28 and causing a cooling air flow. The bypass motor is configured so that the main air flow and cooling air flow is separate. In certain embodiments, a filter, preferably a high efficiency particulate air (HEPA) filter, is included at the cooling air flow outlet for removing debris and other contaminants from the air used to cool the bypass motor. The primary chamber 16 includes an input portal 34 and an output portal 36. The removal portal 24 is connected to the input portal 34 of the primary chamber 16. The output portal 36 of the primary chamber 16 is connected to the suction portal 30 of the vacuum device 14. In the embodiment shown in
The actuator 18 in the embodiment shown in
In the embodiment shown in
Some applications of the shoe cover removal apparatus 10 require a very high degree of cleanliness. For these and other situations, apparatus 10 may have a primary chamber 16 which is sub-divided into a first sub-chamber 114 and a second sub-chamber 116. The first sub-chamber 114 is for receiving removed shoe covers and, in some embodiments, a housing collection container 52. The second sub-chamber 116 is for housing a filter 118, preferably a high efficiency particulate air (HEPA) filter, to remove dirt, dust, germs, bacteria, fungus, viruses, toxins, drugs, small particulate matter, and other contaminants from the materials being sucked through the container 52 and/or screen 53. In the embodiments shown in
In a related embodiment shown in
In another embodiment shown in
All of the spaces that are directly and indirectly connected to vacuum device 14 are preferably substantially hermetically sealed so that the operation of the vacuum device 14 is effective to suck shoe covers off of the shoe of a user and to prevent debris and contaminants from escaping the apparatus. Gaskets are preferably used with all interconnections of various portions of apparatus (10, 110, 210, and 310). Such gaskets are preferably made from synthetic rubber, synthetic rubber and flouropolymer elastomer (e.g., Viton® from DuPont Performance Elastomers, LLC, of Wilmington, Del.), polysiloxane, or flouropolymers (e.g., Teflon® from E. I. du Pont de Nemours and Company, of Wilmington, Del.). The primary chamber 16 is preferably made from metal or a metal alloy (e.g., aluminum, steel, iron). The trough 12 and the shell 56 are preferably made from polymers such as polyvinylchloride (PVC). However, in various embodiments of the invention, other suitable materials may be used for the system components.
In another embodiment shown in
Similar to the device shown in
As shown in
In a related embodiment, a plurality of troughs 312 may be connected to one or more primary chambers 316. For example, as shown in the schematic diagram in
In this embodiment, the vacuum device 314 is preferably disposed at the primary chamber 316 as opposed to being part of trough 312. However, in some embodiments, the troughs 312 may also include their own vacuum devices for additional power. The vacuum device 314 at the primary chamber 316 is in rest mode until an actuator 318 at one of the troughs 312 detects when a user places a shoe in the trough 312. The removal portals 324 of the troughs may be substantially sealed when in rest mode and then unsealed when the trough 312 is activated. When a user places the shoe into one of the troughs 312, the actuator sends a signal to the vacuum device 314 causing power to flow to the particular trough 312 that detected the user. After the vacuum device 314 is activated, a vacuum is created within the trough 312 at the removal portal 324, such that the shoe cover is removed from the shoe of the user and sucked through the removal portal 324 and into the flexible hose 338. The flexible hose 338 shown in
The foregoing description of preferred embodiments for this invention has been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obvious modifications or variations are possible in light of the above teachings. For example, a suitable filter may be provided at various positions not particularly disclosed herein which are within the flow path of the automatic shoe cover remover. The embodiments are chosen and described in an effort to provide the best illustrations of the principles of the invention and its practical application, and to thereby enable one of ordinary skill in the art to utilize the invention in various embodiments and with various modifications as are suited to the particular use contemplated. All such modifications and variations are within the scope of the invention as determined by the appended claims when interpreted in accordance with the breadth to which they are fairly, legally, and equitably entitled.
This application claims priority as a continuation of co-pending U.S. patent application Ser. No. 12/852,070 and as a continuation-in-part of co-pending U.S. patent application Ser. No. 13/192,145 and as a continuation-in-part of co-pending U.S. patent application Ser. No. 12/412,095, filed Mar. 26, 2009, which claims priority under 35 U.S.C. § 119(e) to provisional application Ser. No. 61/039,681, filed Mar. 26, 2008, all of which are incorporated herein by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
1359193 | Parker | Nov 1920 | A |
2304193 | Nielsen | Dec 1942 | A |
2718655 | Cymara | Sep 1955 | A |
2724856 | Conkey | Nov 1955 | A |
2895159 | Ostrow | Jul 1959 | A |
2963723 | Nappi | Dec 1960 | A |
3044099 | Scott | Jul 1962 | A |
3048867 | Counts | Aug 1962 | A |
3066338 | Nappi | Dec 1962 | A |
3115653 | Fresh | Dec 1963 | A |
3445875 | Bohannon | May 1969 | A |
3626545 | Sparrow | Dec 1971 | A |
3737942 | Casey | Jun 1973 | A |
3775793 | Casavant | Dec 1973 | A |
4024599 | Gamboa | May 1977 | A |
4724564 | Fresh | Feb 1988 | A |
4922578 | Miettinen | May 1990 | A |
5083704 | Rounthwaite | Jan 1992 | A |
5384933 | Wang | Jan 1995 | A |
5588175 | Zahner | Dec 1996 | A |
5655253 | Nevin | Aug 1997 | A |
5940926 | Inzinna | Aug 1999 | A |
5991967 | Williams | Nov 1999 | A |
6067688 | West | May 2000 | A |
6105201 | Min | Aug 2000 | A |
6434784 | Wisser | Aug 2002 | B1 |
6499171 | Nappi | Dec 2002 | B2 |
6532686 | Gultekin | Mar 2003 | B2 |
6543075 | Gultekin | Apr 2003 | B2 |
6668842 | Wilke | Dec 2003 | B1 |
6691939 | Grimes | Feb 2004 | B2 |
7676876 | Ewert | Mar 2010 | B1 |
7793384 | Kerr | Sep 2010 | B1 |
8092564 | Totsugi | Jan 2012 | B2 |
8533901 | Williams | Sep 2013 | B2 |
20020020031 | Gultekin | Feb 2002 | A1 |
20040177467 | Jones | Sep 2004 | A1 |
20040244337 | Asici | Dec 2004 | A1 |
20050050669 | Castello | Mar 2005 | A1 |
20070011841 | Kao | Jan 2007 | A1 |
20070163912 | Chen | Jul 2007 | A1 |
20070234690 | Ryan | Oct 2007 | A1 |
20070271723 | Junell | Nov 2007 | A1 |
20080173658 | Ronning | Jul 2008 | A1 |
20090071989 | He | Mar 2009 | A1 |
20090152312 | Li | Jun 2009 | A1 |
Number | Date | Country |
---|---|---|
2446669 | Aug 2008 | GB |
09117301 | May 1997 | JP |
2006094990 | Apr 2006 | JP |
100675956 | Feb 2007 | KR |
100913617 | Aug 2009 | KR |
WO9116829 | Nov 1991 | WO |
WO2007122682 | Mar 2005 | WO |
WO2009100634 | Aug 2009 | WO |
Number | Date | Country | |
---|---|---|---|
20140231470 A1 | Aug 2014 | US | |
20190104875 A9 | Apr 2019 | US |
Number | Date | Country | |
---|---|---|---|
61039681 | Mar 2008 | US |
Number | Date | Country | |
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Parent | 12852070 | Aug 2010 | US |
Child | 13192145 | US |
Number | Date | Country | |
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Parent | 13192145 | Jul 2011 | US |
Child | 14046222 | US | |
Parent | 12412095 | Mar 2009 | US |
Child | 12852070 | US |