Embodiments described herein relate to open display refrigerators, and in particular to brackets for attaching an air curtain guide to a ticket strip of open display refrigerators.
Open display refrigerators are commonly used in retail environments, such as supermarkets, to store and display products, such as meat and dairy products, which must be kept at lower than ambient temperatures. The open front of such a refrigerator makes it easy for customers to view the products being displayed and to retrieve products they wish to purchase from the refrigerator.
This type of refrigerator typically has an air curtain, which is established by blowing cold air across the front of the refrigerator. The air curtain issues from an air outlet at the top of the refrigerator towards an air inlet at the bottom of the refrigerator. The air inlet recovers air from the air curtain and recirculates it to the air outlet via a cooling heat exchanger and fan.
Generally, it is intended that the air curtain follows a broadly linear path from the air outlet to the air inlet thereby preventing cold air in the refrigerator from mixing with warm air exterior to the refrigerator. However, such an air curtain is rather inefficient, in particular because the air curtain tends to spill out from the bottom of the refrigerator and warm air from the exterior becomes entrained into the air curtain. To ameliorate this problem of inefficiency, air guides fixed on the front edge of shelves in the refrigerator can be used to help constrain the air curtain within a desired region.
While it may be possible to custom fabricate air guides to existing refrigerators, such work is likely to be time consuming and/or expensive. A need therefore exists for brackets that are capable to being attached to existing structures common in open display refrigerators, which can allow fast and cost-effective retrofitting of air guides.
Some embodiments described herein relate to a bracket for attaching an air curtain guide to a ticket strip. The bracket can include a first end configured to attach to and/or engage with the ticket strip. A second end of the bracket can be configured to receive or be coupled to an air curtain guide. For example, an air curtain guide can be coupled to the second end of the bracket by one or more screws, bolts, rivets, clips, and/or an adhesive.
Open front display refrigerators frequently have a ticket strip, which is typically attached to the outer edge of a refrigerator shelf (e.g., the edge of the shelf closest to the refrigerator air curtain). A ticket strip typically comprises two opposing grooves, in between which tickets displaying the price of items located on the refrigerator shelf are displayed. The opposing grooves typically run in parallel. A ticket is typically flexible (e.g., paper, thin plastic, laminated paper, an electrophoretic display, etc.), such that the distance between two opposing, parallel edges of the ticket can be brought together to allow the ticket to be inserted in-between the two grooves of the ticket strip. Once the ticket is in place, the natural resilience of the ticket causes it to expand and hence engage with the edges of the grooves.
In some embodiments, the bracket includes a first clip having a first engagement end or tooth and a first body. The first engagement end can be configured to be disposed in a first groove of a ticket strip. The first body can be the portion of the first clip that is directly coupled to the first engagement end. The first body and the first engagement end can be separate structures or monolithically formed. The first clip can be coupled to the second clip via the first body and the second body. The first body and the second body can be separate structures or monolithically formed. The second clip can be opposite the first clip and have a second engagement end or tooth configured to be disposed in a second groove of the ticket strip. In some embodiments, at least one of the first body or the second body can flexible and resilient, which enables the first body and/or the second body to elastically deform such that distance between the first engagement end and the second engagement end can be educed when an inward force is applied to one of the first flexible body and the second flexible body. The distance between the first engagement end and the second engagement end can recover, or return to an unbiased configuration, when the inward force is removed due to the at least one of the first body and the second body being resilient. Additionally, if an outward force is applied to at least one of the first body or the second body, the distance between the first engagement end and the second engagement end can increase.
The first engagement end and the second engagement end may be positioned and shaped to engage with the respective first groove and second groove of the ticket strip in use. When an inward force (e.g., squeeze) is applied, the distance between the first and second engagement ends is reduced and the first and second engagement ends can be inserted in the gap between the grooves of the ticket strip. When the force is removed, the distance between the first and second engagement ends increases and the first and second engagement ends may be received in the respective grooves of the ticket strip, in some embodiments, holding the bracket in place.
In some embodiments, the bracket the first clip and the second clip can be attached to a hinge. The hinge may be in addition to or instead of at least one of the first and second bodies being flexible and resilient. Similarly stated, the hinge can be mechanical hinge that allows a portion of the first body to rotate relative the a portion of the second body, or the hinge can be monolithically formed with the first and second clip and permit elastic and/or plastic deformation such that the first clip and second clip can move relative to each other. The hinge may allow the bracket to operate in a similar manner as to that previously described; however, in order to increase the distance between the first and second engagement ends, the force applied in the first and second directions may be reversed (e.g., outward, instead of inward). The hinge may further comprise a spring, for urging the first and second attachment ends apart, thereby allowing the distance between the first and second engagement ends to recover in a similar manner to a bracket comprising at least one flexible and resilient body.
In some embodiments, the bracket can include a transverse member configured to urge the first clip and the second clip (and therefore the first engagement end and second engagement end) apart. For example, the transverse member can be a threaded member, such as a screw or bolt. Alternatively, the transverse member can be a cam. In yet other embodiments, the transverse member can a spring, a wedge, a block a shim, a post, a bearing, a gear, a cog, or any other suitable device or structure configured to be at least partially disposed between the first clip and the second clip and operable to prevent the first clip and the second clip from moving inward towards each other and/or applying a force to urge the first clip and the second clip (and therefore the first engagement end and the second engagement end) apart.
The first clip can define a threaded configured to receive a threaded member. The threaded member can be tightened such that a tip of the threaded member comes into contact with and exerts a force on a surface of the second clip, thereby locking the first engagement end and the second engagement end in place. Once the threaded member is engaged with a surface of the second body, continuing to turn the threaded member may increase the distance between the first and second engagement ends. Once the threaded member is engaged with a surface of the second body, this essentially prevents the distance between the engagement ends from being decreased. Turning the threaded member in a second direction may allow the distance between the first and second engagement ends to be decreased, when a force is applied to one or both of the first and second flexible bodies.
In use, once the first and second engagement ends of the bracket are engaged with the first and second grooves of the ticket strip, the threaded member may be used to prevent the distance between the first and second engagement ends from being reduced, thereby locking the first engagement end and the second engagement end in place and holding the bracket in place on the ticket strip.
In an alternative embodiment, instead of a threaded hole and a threaded member, the transverse member can be a cam. The bracket can include a slot through the second clip configured to receive the cam. When the cam is received by the second clip, the cam be configured to rotate on an axis defined by the slot, and a surface of the cam can be in sliding contact with the first clip. The cam can be rotated to exert an outward force on the first clip and the second clip (and therefore the first engagement end and second engagement end). The cam can include a handle that is lockably engageable with a handle receiving portion of the slot in the second clip, thereby locking the first engagement end and the second engagement end in place (e.g., in an expanded configuration).
In some embodiments, the bracket is constructed from a plastic and/or a metal. Alternatively the bracket is constructed from a composite material, such as carbon fiber. The bracket may be constructed of any other suitable material. The bracket may comprise any combination of these materials or any other material known in the art.
In some embodiments, the bracket is a first bracket, and an end portion of the bracket opposite the first and second engagement ends of the bracket is configured to receive a second bracket. The second bracket coupled to or configured to be coupled to an air curtain guide.
The end portion of the first bracket opposite the first and second engagement ends can include a recess configured to receive the second bracket. The first bracket can define a hole configured to receive a tab of the second bracket. When the tab is urged outwardly (for example, by the natural resilience of the tab) and is received in the hole, the tab may effectively lock the second bracket into place in the recess. The air curtain guide may be coupled to the second bracket by one or more screws, bolts, rivets, clips, and/or an adhesive.
The air curtain guide, in some embodiments, can be an airfoil. An airfoil is a type of air guide that guides air in a specific manner. An airfoil works by being situated in the air curtain of the refrigerator, with a portion of the air curtain flowing either side of the airfoil. The airfoil imparts a shape into the airflow and guides the airflow in a desired direction. The specific shape of the airfoil causes a change in the direction of flow of the air curtain as it flows over the airfoil. A typical design of airfoil that can be used is a cambered airfoil. This will usually be oriented with the leading edge uppermost and the cambered surface facing away from the interior space. An airfoil is a shape that gives rise to lower pressures on one side (on the suction surface) compared with the other side (on the pressure surface) when placed in the air curtain.
Some embodiments described herein relate to a method of coupling a bracket to a ticket strip that is coupled to a shelf of a refrigerator. The bracket can be coupled to or configured to be coupled to an air guide. The bracket can have a first engagement end (or tooth) and a second engagement end (or tooth). The bracket can be coupled to the air guide strip by disposing the first engagement end in a first groove of the ticket strip and disposing the second engagement in a second groove of the ticket strip. In some embodiments, the first engagement end and the second engagement end can be squeezed together prior to coupling the bracket to the air guide curtain. Similarly stated, the bracket can be configured such that, in an unbiased configuration, the first engagement end and the second engagement are wider than an opening of the ticket strip. The bracket can be locked into the ticket strip in an expanded configuration and/or the unbiased configuration, for example by rotating a cam to spread the first engagement end and the second engagement end in opposite directions or by tightening a screw that is threaded through a first clip of the bracket such that a tip of the screw makes contact with and/or applies a force to a second clip of the bracket, for example, pushing the first engagement end and the second engagement end apart from each other. An air curtain guide (e.g., an airfoil) can be coupled to the bracket.
Embodiments of the invention will now be described with reference to the accompanying drawings, in which:
As shown, bracket 1 is configured to be coupled to another bracket 9, which can be coupled to or configured to be coupled to an air curtain guide. The second bracket 9 may be received by the bracket 1. The bracket 1 may further comprise a hole 14 for receiving a tab 15 of the second bracket 9. The tab 15 can be used to secure the second bracket 9 in place. When the tab 15 is urged outwardly (for example, by the natural resilience of the tab) and is received in the hole 14, it secures the second bracket 9 in place. It should be understood, however, that in other embodiments, bracket 1 can be directly coupled to or configured to be coupled to an air curtain guide. Similarly stated, the second end 3 can be or include another bracket 9 or be a portion of bracket 1 coupled to or configured to be coupled to an air curtain guide.
It should be understood, however, that in other instances, the first and second engagement ends can fit into the opening of the ticket strip 11 when the bracket 1 is in an unbiased configuration (e.g., when the first flexible resilient body 6 and the second flexible resilient body 7 are not deformed and/or subjected to force). In such an instance, the first and second engagement ends can be expanded into the grooves 12, 13, of the ticket strip by applying an outward force to the first flexible resilient body 6 and/or the second flexible resilient body 7, as discussed in further detail herein.
The bracket 100 includes a first flexible and resilient body 600 and a second flexible and resilient body 700. The bracket 100 further comprises a cam 180 that includes a cam body 190 and a camshaft 205. A lever 210 is coupled to or a component of the cam 180 and configured to cause the cam 180 to be rotated about an axis defined by the camshaft 205. The lever 210 has a handle 220 configured to allow torque to be applied to the cam 180. The second flexible and resilient body 700 defines a slot 230 for receiving the cam 180 that includes a camshaft engagement portion 230a and a handle engagement portion 230b. The camshaft 205 is rotatably received in the rod engagement portion 230a.
In a first state as shown in
It should be understood, however, that in other instances, the first and second engagement ends can fit into the opening of the ticket strip when the bracket 100 is in an unbiased configuration (e.g., when the first flexible resilient body 600 and the second flexible resilient body 700 are not deformed and/or subjected to force). In such an instance, the first and second engagement ends can be expanded into the grooves of the ticket strip by applying an outward force to the first flexible resilient body 600 and/or the second flexible resilient body 700.
The bracket 100 can be locked into place by moving the lever 210 such that the cam 180 rotates until the handle 220 is brought into engagement with the handle engagement portion 230b. As the cam rotates, the cam body 190 is (or is brought into) in sliding contact with the second flexible resilient body 600. The second flexible resilient body 600 follows the cam body 190, such that the cam 180 applies an outward force(s) to the first flexible resilient body 600 and the second flexible resilient body 700 though the cam body 190 and the camshaft 205.
The handle portion 220 can locked into place in the handle engagement portion 230b, for example, by way of a snap-fit. In this state (as shown in
While various embodiments have been described above, it should be understood that they have been presented by way of example only, and not limitation. Furthermore, although various embodiments have been described as having particular features and/or combinations of components, other embodiments are possible having a combination of any features and/or components from any of embodiments where appropriate as well as additional features and/or components. Where methods described above indicate certain events occurring in certain order, the ordering of certain events may be modified. Additionally, certain of the events may be performed concurrently in a parallel process when possible, as well as performed sequentially as described above.
This application is a divisional of U.S. patent application Ser. No. 16/995,250, filed on Aug. 17, 2020, which claims priority to U.S. Provisional Application No. 62/887,350 filed on Aug. 15, 2019, the entirety of each of which is hereby incorporated by reference.
Number | Name | Date | Kind |
---|---|---|---|
2387622 | Tanner | Oct 1945 | A |
2822672 | Dickson et al. | Feb 1958 | A |
3084463 | Reynolds et al. | Aug 1960 | A |
3063252 | Gilbert et al. | Nov 1962 | A |
3063253 | Dickson et al. | Nov 1962 | A |
3747726 | Walter | Jul 1973 | A |
4221443 | Heaney | Sep 1980 | A |
5088607 | Risafi et al. | Feb 1992 | A |
8729429 | Nuttall et al. | May 2014 | B2 |
9370262 | Wirth | Jun 2016 | B2 |
D777225 | McAndrew | Jan 2017 | S |
D824963 | McAndrew | Aug 2018 | S |
D854590 | McAndrew | Jul 2019 | S |
11737584 | McAndrew | Aug 2023 | B2 |
20050217297 | Wilson | Oct 2005 | A1 |
20060059934 | Howington et al. | Mar 2006 | A1 |
20070251253 | Alahyari et al. | Nov 2007 | A1 |
20080205040 | Shibusawa et al. | Aug 2008 | A1 |
20080236182 | Hahn et al. | Oct 2008 | A1 |
20120092350 | Ganapathi et al. | Apr 2012 | A1 |
20130112634 | Nagel | May 2013 | A1 |
20160302591 | McAndrew | Oct 2016 | A1 |
20170231403 | Eget et al. | Aug 2017 | A1 |
20180325284 | McAndrew et al. | Nov 2018 | A1 |
20190142186 | Wirth | May 2019 | A1 |
20190195552 | Roesch et al. | Jun 2019 | A1 |
20190274452 | McAndrew | Sep 2019 | A1 |
20190360738 | McAndrew | Nov 2019 | A1 |
20210298492 | Wirth | Sep 2021 | A1 |
20210393052 | McAndrew et al. | Dec 2021 | A1 |
20220175155 | McAndrew | Jun 2022 | A1 |
20220232999 | McAndrew | Jul 2022 | A1 |
20230404293 | McAndrew | Dec 2023 | A1 |
Number | Date | Country |
---|---|---|
101014268 | Aug 2007 | CN |
101031225 | Sep 2007 | CN |
109561769 | Apr 2019 | CN |
0441357 | Aug 1991 | EP |
0722158 | Apr 1999 | EP |
1120069 | Aug 2001 | EP |
2690825 | Nov 1993 | FR |
2764787 | Dec 1998 | FR |
249295 | Mar 1926 | GB |
2527636 | Dec 2015 | GB |
2541996 | Mar 2017 | GB |
2555227 | Apr 2018 | GB |
2560932 | Oct 2018 | GB |
2563407 | Dec 2018 | GB |
2571116 | Aug 2019 | GB |
S5072330 | Jun 1975 | JP |
S51150569 | Dec 1976 | JP |
S5374768 | Jun 1978 | JP |
S55165468 | Dec 1980 | JP |
S57152073 | Sep 1982 | JP |
S58110977 | Jul 1983 | JP |
S59174588 | Nov 1984 | JP |
S62162569 | Oct 1987 | JP |
2004278865 | Oct 2004 | JP |
2010207564 | Sep 2010 | JP |
2010207565 | Sep 2010 | JP |
2011131036 | Jul 2011 | JP |
2011167384 | Sep 2011 | JP |
2014198069 | Oct 2014 | JP |
19990013134 | Apr 1999 | KR |
20110092935 | Aug 2011 | KR |
20120008561 | Feb 2012 | KR |
WO-2005023060 | Mar 2005 | WO |
WO-2008052721 | May 2008 | WO |
WO-2012112115 | Aug 2012 | WO |
WO-2014167320 | Oct 2014 | WO |
WO-2018200997 | Nov 2018 | WO |
WO-2019227119 | Dec 2019 | WO |
WO-2020229799 | Nov 2020 | WO |
WO-2021005335 | Jan 2021 | WO |
Entry |
---|
Non-Final Office Action for U.S. Appl. No. 17/569,249 dated Jan. 3, 2024, 20 pages. |
Number | Date | Country | |
---|---|---|---|
62887350 | Aug 2019 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 16995250 | Aug 2020 | US |
Child | 18120261 | US |