Abstract:
A multi-level personal utility cart includes a frame including a vertical rear panel and a handle including latching structure on side portions of the handle, each latching structure being structurally engaged with a portion of the rear panel, a lower basket assembly carried by and pivotably attached to the frame, an upper basket assembly carried by and pivotably attached to the frame, where the upper and lower basket assemblies are pivotable in a direction toward the upper portion of the handle so that the upper and lower basket assemblies can be collapsed against a portion of the frame into a compact and substantially planar structure. The latching structure on the handle operatively cooperates with the rear panel to automatically lock the cart in an opened position. An access door to the lower basket assembly is provided. Also disclosed is a method for deterring theft of “conventional” shopping carts which entails providing “non-conventional” shopping carts of the inventive type to users for purchase, marking the “non-conventional” shopping carts with information identifying the user as the owner of the cart, marking the “non-inventional” shopping carts with information identifying one or more vendors of services or products offered or sold at a market, and providing the user with discounts on the services or products offered or sold by the one or more vendors to the market

Description:
BACKGROUND OF THE INVENTION  
       [0001]     1. Field of the Invention  
         [0002]     The present invention relates to hand or utility carts used by persons for transporting goods or personal belongings, and more particularly to collapsible hand or utility carts having multiple levels of containment for holding such goods or belongings.  
         [0003]     2. Description of the Related Art  
         [0004]     It is well known that shopping carts, of the kind typically found in supermarkets, department stores or other such stores where consumers select goods from in-store shelving and displays, have been used as vehicles for transporting merchandise purchased at those markets to and from the purchasers automobiles. It is also well-known that many purchasers, especially those persons who do not have automobiles or who reside in low-income areas, are prone to using the shopping carts for transporting their purchased goods to their residences or at the very least to their neighborhoods where they are able to unload their purchases and keep the carts in the ready for the next time it is necessary to return to those markets.  
         [0005]     However, the removal of shopping carts from market premises by patrons or shoppers is a situation that has not been met with great favor, both in the industry and in the community, and a multitude of solutions for preventing the removal of such carts from the market premises have been devised. Among those currently most favored by the industry are electronically triggered devices which cause the wheels of the cart to lock up when the cart is pushed or otherwise moved past a pre-installed boundary, which typically takes the form of a buried electronically triggering cable disposed about the perimeter of the market&#39;s parking lot or premises.  
         [0006]     Examples of such systems are embodied in U.S. Pat. Nos. 6,054,923 and 6,271,755 issued to Prather et al. Those patents disclose a shopping cart system that incorporates a disabling mechanism that renders the cart&#39;s swivel wheels inoperative upon actuation of a disabling signal from the cable. The &#39;755 patent further teaches a shopping cart disabling system which, when triggered, makes available only a pair of wheels that enables movement of the cart, but only in a circular direction. The object of that invention is to make it impossible for a person to remove the cart from the store&#39;s premises by rolling it away.  
         [0007]     Other theft thwarting systems have been developed and are well known, as that taught by U.S. Pat. No. 3,717,225 to Rashbaum, which discloses a piston rod and wheel lock device that includes a frame mounted actuator that locks one of the wheels of the cart upon actuation via a disabling signal, and various electronically actuated wheel locking devices, as exemplified in U.S. Pat. No. 5,315,290 to Moreno, U.S. Pat. No. 6,127,927 to Durban et al., U.S. Pat. No. 6,037,869 to Lace, and U.S. Pat. No. 6,125,972 to French et al.  
         [0008]     One of the objectives of this invention to enable an alternative means of transporting purchased goods when shopping cart removal from a market&#39;s premises is thwarted. The present invention offers shoppers a user-propelled mobile device for transporting purchased goods from the market to their homes, and further to be able to take this mobile device back to the market for another shopping experience after which the same need to bring the purchased goods home can be again fulfilled. Concurrent with this aim, the invention embraces a scheme that rewards shoppers for using the mobile device of the invention for transporting purchased goods home instead of removing the market&#39;s shopping carts from the market&#39;s premises for that purpose.  
         [0009]     Personal carts for transporting groceries or other personal items have been in use for some time. Typically, such personal carts have a single basket or container supported on or atop a wheeled base, and may additionally be able to be collapsed or otherwise folded to reduce the volume for storage when not in use.  
         [0010]     Personal carts have also been developed which can be collapsed or folded so as to be easily storable. Examples of such carts are shown in U.S. Pat. No. 4,339,141 to Thiboutot and U.S. Pat. No. 4,185,848 to Holtz.  
         [0011]     And in an effort to enable a shopper to transport increased amounts of goods from the store to the shopper&#39;s home or other destination, shopping carts with more than a single basket or container have been developed. For example, U.S. Pat. No. 6,126,181 to Ondrasik shows a conventional shopping cart frame on which are mounted stepped, offset, baskets, U.S. Pat. No. 4,047,724 to Shaffer shows a collapsible utility cart having a plurality of detachable baskets and stair-climbing capabilities, and U.S. Pat. No. D407,882 to Duchene teaches a shopping cart having a frame that is designed for supporting two removable baskets, one atop the other.  
         [0012]     Applicants are also aware of the cart disclosed in U.S. Pat. No. 3,774,929 to Stanley which comprises a collapsible wheeled cart having a single basket on the top of which is carried an auxiliary carrying section which also is collapsible, but which is separate from and not permanently attached to the frame of the wheeled cart. Moreover, the upper basket and lower baskets do not close simultaneously with a single upward pivoting movement, as do the baskets in applicants&#39; invention.  
         [0013]     The foregoing carts are intended for use in the market and about the market premises. No personal carts having simultaneously collapsible baskets, with the exception of the carts disclosed in applicants&#39; own published pending patent applications (USSN 20020167139 and USSN 20020083612), are known which are designed for use by the shopper outside of the market premises. Applicants&#39; personal carts in the above referenced pending patent applications are multi-level collapsible carts wherein the upper and lower baskets are pivotably hinged to the frame of the cart, and can be collapsed together.  
         [0014]     In applicants&#39; prior collapsible carts as disclosed in the pending applications referred to above, the cart is secured in the fully erected position by a latching mechanism carried by the handle of the cart. However, it has been found that sometimes, when the loads are particularly heavy, these carts, like many other collapsible carts known in the art, have a tendency to collapse when they are pulled up stairs.  
         [0015]     The preceding examples of carts and personal carts also have limitations as far as their carrying capabilities for purchased goods, and it is clear that there is a need for a personal cart that has significantly greater storage capacity, as for example one which has more than one storage compartment, where the contents of each storage compartment are each uniquely accessible and which will enable shoppers who have purchased their goods to transport their goods from the market to their home in a single trip without the use of motor vehicles. Such a cart must also be collapsible so that storage of the collapsed cart is facilitated as well. The present invention provides a solution to such a need for the shopper as well as the market.  
         [0016]     There is also a need for such a cart to be sufficiently inexpensive to the shopper so that the shopper will be induced to acquire the cart in advance of shopping at the market. The present invention contemplates a plan or method for providing carts to the shoppers that benefits not only the shoppers, but the markets and vendors of the markets as well. This method contemplates the sale of the carts to the shoppers with subsequent rebates or discounts running to the shoppers for products or services offered by vendors of the markets as rewards to the shoppers for having purchased the carts.  
         [0017]     In one aspect of the invention, there is provided a multi-level personal utility cart including a frame with a handle having a rearwardly positioned upper portion, side portions, and a forwardly extending lower portion, a first basket assembly pivotably supported to the frame, a second basket assembly disposed atop the first basket assembly and pivotably supported to the frame, where the first and second basket assemblies are simultaneously pivotable on the frame toward the handle upper portion so that the first and second basket assemblies can be collapsed against a portion of the frame into a compact and substantially planar structure.  
         [0018]     In another aspect of the invention, there is provided a collapsible personal utility cart including upper and lower baskets pivotably mounted to a frame, in which the baskets are both pivotable from fully opened positions upwardly and toward the rear portion of the cart handle, and are both pivotably deployable from the fully collapsed position downwardly to a fully opened position, and further in which the cart includes a positive locking mechanism which secures the cart in an opened position.  
         [0019]     In another aspect of the invention, a hand-propelled or pushed personal shopping cart is provided which includes multiple levels of storage within corresponding multiple, yet separate, storage chambers, with independent access to each chamber.  
         [0020]     In another aspect of the invention, a personal shopping cart is provided which is collapsible, inexpensive to manufacture, and inexpensive to own as well.  
         [0021]     In yet another aspect of the invention, the shopping cart is easily storable in its collapsed condition.  
         [0022]     In still another aspect of the invention, the shopping cart will enable shoppers to own and possess a very affordable personal shopping cart with which they can take to their local shopping market, and into which they can load their purchased goods for subsequent check-out and then transport to their respective residences.  
         [0023]     In still another aspect of the invention, a method for deterring theft of “conventional” shopping carts is provided in which shoppers are encouraged to use the “non-conventional” carts of the invention which are sold to the shoppers by markets, and discounts or rebates are made available to the shoppers by vendors who advertise and promote their goods and/or services available at the shopping markets.  
         [0024]     Various objects, advantages and features of the invention will become more apparent, as will equivalent structures which are intended to be covered herein, with the teaching of the principles of the invention in connection with the disclosure of the preferred embodiments thereof in the specification, claims and drawings in which: 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0025]      FIG. 1  is a front perspective view of the personal shopping cart of the present invention;  
         [0026]      FIG. 2  is a rear perspective view of the personal shopping cart of the present invention, showing the rear access door  56  to the lower basket assembly;  
     
    
       [0027]     In still another aspect of the invention, the shopping cart will enable shoppers to own and possess a very affordable personal shopping cart with which they can take to their local shopping market, and into which they can load their purchased goods for subsequent check-out and then transport to their respective residences.  
         [0028]     In still another aspect of the invention, a method for deterring theft of “conventional” shopping carts is provided in which shoppers are encouraged to use the “nonconventional” carts of the invention which are sold to the shoppers by markets, and discounts or rebates are made available to the shoppers by vendors who advertise and promote their goods and/or services available at the shopping markets.  
         [0029]     Various objects, advantages and features of the invention will become more apparent, as will equivalent structures which are intended to be covered herein, with the teaching of the principles of the invention in connection with the disclosure of the preferred embodiments thereof in the specification, claims and drawings in which:  
       BRIEF DESCRIPTION OF THE DRAWINGS  
       [0030]      FIG. 1  is a front perspective view of the personal shopping cart of the present invention;  
         [0031]      FIG. 2  is a front perspective view of the cart of  FIG. 1  in a partially collapsed state, and showing the rear access door  56  to the lower basket assembly opened;  
         [0032]      FIG. 3  is a front perspective view of the personal shopping cart of the present invention showing the cart in a fully collapsed, state;  
         [0033]      FIG. 4   a  is an enlarged perspective view of the section marked “4” in  FIG. 1  showing the structure and manner in which the upper basket assembly is supported on the lower basket assembly;  
         [0034]      FIG. 4   b  is an enlarged side view of the section marked “4” in  FIG. 1  showing the structure and manner in which the upper basket assembly is supported on the lower basket assembly;  
         [0035]      FIGS. 5   a - 5   c  are enlarged views of the section marked “5” in  FIG. 1  which show details of the locking mechanism of the personal shopping cart of the invention;  
         [0036]      FIG. 5D  is a top-down view of the latching mechanism for holding the cart in an fully opened position, the view being taken along lines  5 D- 5 D in  FIG. 5A ;  
         [0037]      FIG. 6  is a close-up view, taken at the circled area in  FIG. 1  identified with the designation “6”, of a basket assembly retaining mechanism for securing the upper and the lower basket assemblies of the cart when the upper or the upper and lower basket assemblies are in their non-functional positions;  
         [0038]      FIG. 7  is a close-up view, taken at the circled area in  FIG. 2  identified with the designation “7”, of a basket assembly retaining mechanism for securing the upper and the lower basket assemblies of the cart when the upper or the upper and lower basket assemblies are in their non-functional positions;  
         [0039]      FIG. 8  is a dose-up view, taken at the circled area in  FIG. 3  identified with the designation “8”, of a basket assembly retaining mechanism for securing the upper and the lower basket assemblies of the cart when the upper or the upper and lower basket assemblies are in their non-functional positions;  
         [0040]      FIGS. 9-11  show stages of operation of a guide element used when the shopping cart of the present invention is opened or closed.  
       DETAILED DESCRIPTION OF THE INVENTION  
       [0041]     The following description is provided to enable any person skilled in the art to make and use the invention and sets forth the best modes contemplated by the inventor of carrying out his invention. Various modifications, however, will remain readily apparent to those skilled in the art, since the generic principles of the present invention have been defined herein specifically to provide a personal hand cart having multiple levels of storage compartments, while also being collapsible for storage.  
         [0042]     Referring now to the drawings, and specifically first to  FIG. 1 , the personal cart  10  of the present invention, shown in a functional opened position, is seen to include an upper container or basket assembly  12  and a lower container or basket assembly  14 . The upper basket assembly  12  is disposed atop the lower basket assembly  14 , and the basket assemblies are capable of being pivoted from the fully opened, functional position shown in  FIG. 1  to a partially opened functional position (as shown in  FIG. 2 ) or a fully closed non-functional position (as shown in  FIG. 3 ).  
         [0043]     A handle  16  includes an upper handle portion  18 , a lower handle portion  20 , and side portions  22 ,  23  extending between and interconnecting the upper and lower handle portions. Preferably, the side portions  22 ,  23  are disposed on the exterior of the upper basket assembly  12  and the lower basket assembly  14 . Preferably, the upper handle portion  18  and the lower handle portion  20  are both U-shaped, with the upper handle portion  18  being located atop and rearwardly of the cart, and the lower handle portion  20  being located at the lower region of the front of the cart. The U-shaped upper handle portion includes arms  19  which extend from the bight of the upper handle portion downwardly and forwardly to interconnect with the upper portions of the side portions  22 ,  23 . The U-shaped lower handle portion  20  includes arms  21  that extend rearwardly and preferably horizontally from the bight of the lower handle portion  20  outside of the lower basket assembly  14  to interconnect with the lower portions of the respective side portions  22 ,  23  at the forward region of the cart. Casters  24 ,  24 ′ are supported at the underside of the lower handle portion  20  at and below the intersection of the forwardmost portion of each of the arms  21  of the lower handle portion and the lateral extremities of the bight portion of the lower handle portion. The casters may be mounted directly to the lower handle portion as shown in  FIG. 3 , or they may be mounted to reinforcement plates (not shown) fixedly secured to the underside of the lower handle portion. Further, the casters on the front of the cart are preferably swivel casters (as shown in  FIGS. 1 and 3 ) or they may be fixed, non-swiveling, casters. Casters  25 ,  25 ′ (see  FIG. 2 ) are supported on an axle  46  carried by and mounted to the rear of the lower basket assembly.  
         [0044]     In contrast to the personal utility carts disclosed in applicants&#39; previously filed US applications (identified above), the personal utility carts of the present invention, upon opening from the fully non-functional collapsed position (shown in  FIG. 3 ), positively locks in an open position so that the user never needs to manipulate some part (e.g., refer to the slide element and lock of applicants&#39; prior inventions described in the aforementioned published pending applications) of the cart after opening the lower basket assembly to assure that the cart will not fold closed on the user unexpectedly.  
         [0045]     Referring now to  FIGS. 1 and 5 A- 5 C, the positive locking mechanism for securing the cart in an opened non-collapsed position is shown to include a latch element  100  carried by the upper portion of each of the side portions  22 ,  23  of the handle assembly. Each respective latch element  100  is secured to the side portions  22 ,  23  of the handle, preferably in the vicinity of the upper handle portion arms  19 ,  19 . Each of the latch elements  100  comprises a first guide portion  110  disposed beneath and substantially parallel to the side portions  22 ,  23  of the handle and a second, biased, keeper portion  120 .  
         [0046]     The guide portion  110  includes a first “upper” end  112  secured to the respective side portion  22  or  23 , and a second “lower” end  114  secured to the respective side portion  22  or  23 . Located between the first and second ends of the guide portion  110  at a location toward the bottom thereof (i.e., toward the second end  114 ) is a guide stop  116  formed by deforming the guide portion toward and into or nearly into engagement with the underside of the respective side portion.  
         [0047]     The keeper portion  120  preferably comprises a slender elongated wire-like element having a first upper end  122  and a second lower end  124 . The second end of the keeper portion is secured to the second end portion  114  of the guide element at a location below the side portion to which the latch element is affixed. The first end  122 , which is not secured to the guide element and is free to move in a cantilevered fashion toward and away from the side portion of the handle assembly, includes a first segment  132  directed toward the side portion  22  or  23 , and a second segment  134  that forms a nearly circular end which encircles and captures the side portions  22  or  23 . Disposed between the first end  122  and the second end  124  of the keeper portion  120  is an inclined ramp portion  129  which extends upwardly and forwardly in a direction toward the respective side portion  22  or  23  and culminates in a forwardly directed detent portion  126 . Further above the detent portion  126 , but rearwardly thereof is a latch notch  128 .  
         [0048]     When a user opens the cart from its fully collapsed position (see  FIG. 3 ), the upper horizontal wire element  44   a  of the rear panel of the cart rides from the position depicted in  FIG. 5   c , in which the wire element  44   a  is located at the guide stop  116 , upwardly in the guide portion  110 . First, the wire element  44   a  moves to the position shown in  FIG. 5B , where the wire element  44   a  bears against and forces the keeper portion rearwardly by its engagement with the ramp portion  129 . Then, as the wire element  44   a  continues upwardly in the guide portion  110 , it passes over the detent portion  126  and is captured and held in the latching notch  128 . Simultaneously, the lower basket assembly of the cart becomes fully deployed and opened. On the upper side of the ramp-like segment  128  is a latching notch  130  into which the wire element  44   a  seats following its passing over the upper extent of the ramp portion  126 . It is to be noted as most clearly shown in  FIGS. 5B and 5C  that the latching notch is smaller in dimension between the first segment  132  of the keeper portion  120  and the upper extent of the ramp portion  126  than across the notch  130 . This is for the purpose of positively retaining the wire element  44   a  in the latching notch  130  after the lower basket assembly of the cart has deployed to its fully opened position.  
         [0049]     Thus, when the basket is opened from its fully collapsed position ( FIG. 3 ), the lateral ends of the wire element  44   a  in the rear panel of the cart move from the position shown in  FIG. 5C  upwardly in the guide portion  110  toward the “upper” end of the guide portion  110  until they engage the inclined ramp portion  129 , whereupon further opening of the cart causes the ends of the wire elements  44   a  to push the ramp portion  129  rearwardly until the wire elements  44   a  ride over and engage in the latching notch portion  130  whereupon the keeper portion  120  springs forwardly to return to its original position, and the ends of the wire elements  44   a  are securely retained in the latching notch portion  130 . The free end  134  of each keeper member is prevented from disengaging from the side portion of the cart due to its being formed in a nearly closed loop which encircles the side portion  22 ,  23  of the handle member (see  FIG. 5D ). In this manner, the ends of the upper wire  44   a  are kept from moving relative to the side member on which it is supported when the cart has been opened, thereby locking the cart in a fully opened position and preventing accidental closure of the cart when the cart contains goods.  
         [0050]     To release the wire elements  44   a  of the rear panel portion from the latching mechanism  100  so that the lower basket assembly can be collapsed and the cart rendered non-functional, it is necessary to move the keeper portion  120  rearwardly a sufficient distance so that the wire elements  44   a  can be disengaged from the latching notch  130  and moved downwardly in the guide portion  110 . This can be accomplished by pressing rearward, on each side of the cart, the second segment  134  of the free upper end portion  122  of the keeper portion. This releases the wire element  44   a  from the latching notch  130 , allowing the wire element to move downwardly in the guide portion  110  as the lower basket assembly is pivoted into a fully collapsed position. Although not shown in the drawings, the invention contemplates a single operator that can effect movement of both of the keeper portions  120  rearward and at the same time. This could be accomplished, for example, by securing the two keeper portions on opposite sides of the cart together by a single horizontal member, which would allow a cart user to grasp the single member and pull back thereby simultaneously releasing both of the keeper portions.  
         [0051]     As seen in  FIGS. 1 and 2 , the wire  44   a  spans the distance between, and is supported by the two latch elements  100 . A pair of spaced apart, parallel, substantially vertical support members  42 ,  43  extend downwardly from each lateral region of the elongated member  44   a  in the vicinity of the latch elements  100 . Each support member is associated with a respective one of the latch elements. The length of the support members  42 ,  43  is preferably chosen to be greater than the combined height of the upper and lower basket assemblies  12 ,  14 . A plurality of other horizontal support elements  44   b ,  44   c , . . . extend parallel to one another and between the support members  42 ,  43  at vertically spaced locations downwardly to just below the rearwardly extending horizontal arms  21 ,  21  of the lower handle member  20 . Similarly, several vertically disposed, spaced apart, and parallel slender elements  45   a ,  45   b ,  45   c  are provided for supporting engagement with the horizontal support elements  44   a ,  44   b , . . . The horizontal support elements  44   a ,  44   b , . . . form, along with the support members  42 ,  43 , a grillwork or latticework panel, which functions as the rear panel, for the upper and lower basket assemblies  12 ,  14 . An axle member  46  is supported by the lowermost portion of the vertical support elements  42 ,  43 , located preferably below the plane of the floor panel of the lower basket assembly  14 . The axle member  46  extends laterally between the support members  42 ,  43  and carries casters  25  on end portions of the axle member  46 .  
         [0052]     Vertical support members  62  and  63  are provided at the front of the upper and the lower basket assemblies at opposing sides of the basket assemblies.  
         [0053]     Each of the upper and lower basket assemblies comprise front, side, and bottom panels. Preferably, each of the front and bottom panels comprise a grillwork or latticework of slender elongated elements (such as the wires shown in the Figures, or thin rods; however, the present invention also contemplates forming the panels from solid sheets of material with wires or pin-like projections extending from the front and rear of the side panels so as to form a structure similar to the side panels shown in the Figures of the drawings). The slender elements  47  of the side panels of the basket assemblies extend from front to rear, and are attached to the front and rear panels of the upper and lower basket assemblies of the cart. When either the top or bottom basket assembly is in an erected state (as shown in  FIG. 1 ), the slender elements are parallel to one another and arranged substantially horizontally. The ends of each slender element  47  in each of the side panels of the upper and lower baskets are formed into loop (as are the front and rear end of each element of the upper and lower basket assembly floor panels) which, at the rear end thereof, is hooked about and pivotable on a horizontal element in the rear panel extending laterally between the support elements  42 ,  43 , and at the forward end thereof is hooked about and pivotable on horizontal elements  52  of the front panel extending laterally between the support elements  42 ,  43 . The pivoting connections function in such a manner that, after the cart has been opened as shown in  FIG. 1 , the basket assemblies are permitted to pivot upwardly and rearwardly about the horizontal elements  44   a ,  44   b ,  44   c  . . . and thereby effect collapse of the basket assemblies, either the upper basket assembly alone to achieve a partially collapsed state (as shown in  FIG. 2 ), or the two basket assemblies together to achieve a fully collapsed state (as shown in  FIG. 3 ).  
         [0054]     Each of the upper and lower basket assemblies are independently able to be pivoted upwardly and rearwardly. This can be done simultaneously to effect collapse of the two basket assembies together by grasping the lower front portion of the lower basket assembly and lifting it upwards and to the rear, which in turn forces the upper basket assembly to be lifted upward and to the rear, so that both basket assemblies can be collapsed at the same time.  
         [0055]     Alternatively, the lower basket assembly alone can be lifted upward and rearward so as to be collapsed, as shown in  FIG. 2 . In this latter semi-collapsed state, the upper basket can be secured in its collapsed position by means of a latching clip  160  shown in  FIGS. 1 and 2 , and in detail in  FIGS. 6-8  (description of the latching clip  160  is set out in detail below). It is to be noted that the lower basket assembly cannot be collapsed separately from, or before collapse of, the upper basket assembly—if the lower basket assembly is to be collapsed, it is necessary to also collapse the upper basket assembly.  
         [0056]     The rear panel of the cart assumes a substantially vertical orientation when the cart has been fully opened and is seated on the ground on its four casters. The rear panel includes a pair of spaced apart hook elements  53 ,  54  located on the upper panel portion U to permit suspension of the cart, when completely collapsed, from a structural support (not shown), such as the upper front rail of a conventional shopping cart, a horizontally extending suspension member, suspension elements secured to a wall, etc.  
         [0057]     The lower portion of the rear panel may preferably be provided with a downwardly and rearwardly pivoting panel or door  56  (see  FIG. 2 ) to permit access to the contents in the lower basket assembly when the upper basket assembly is still in its open, fully functional, position.  
         [0058]     Indicia bearing signs, such as those shown in applicants&#39; prior pending applications but not shown here, can be attached to the front panel portions of the upper and lower basket assemblies. Preferably, the signs are held in sign frames, such as frame  212  seen in the Figures of applicants&#39; prior pending applications, which can be of square, rectangular, or any other configuration. The sign frame  212  is to be secured to the front panel of the upper basket assembly for holding a sign or a tag that identifies a product or service provider whose products or services are offered in markets. Further as shown in applicants&#39; prior pending applications, signs can be attached to the front panel of the lower basket assembly for identifying the owner of the cart and the store from which the cart was purchased.  
         [0059]     The present invention contemplates a method for deterring theft of “conventional” shopping carts which entails the sale of personal carts of a type similar to those described herein to customers by the markets or by third party cart vendors (as for example, vendors who can sell the carts directly to the customer either in the markets or through separate storefronts).  
         [0060]     The vendors of services or goods will pay the market a fee for the market to supply vendor product advertising or event promotions or other advertising on a tag or card held in the sign frame on the customer&#39;s personal cart. The market&#39;s vendors then supplies to the customers discount or rebate coupons for vendor supplies or services currently available in or at the market, for future purchases of vendor supplies or services, or for promotional give-aways. In a reasonably short period of time, the discounts or rebates given to the customer via the coupons will add up to the cost of the cart, and all discounts or rebates thereafter made available to the customer run toward developing an increasing “value” component attributable to ownership of the cart.  
         [0061]     Moreover, by making such personal carts available for purchase to the customer, the markets can reduce their own in-store inventories of conventional shopping carts. And now, with recent state and municipal legislation being passed or at least being considered for the imposition of fines on markets whose carts are not maintained at the premises of the markets, a program such as the one outlined above would not only result in fewer carts being removed from the market&#39;s premises by customers, but also an improvement in the appearance of the surrounding community.  
         [0062]     Referring now to  FIGS. 1 and 68 , a basket latching element  160  is provided on the upper horizontal element  44   a  of the rear panel. The element  160  comprises a single length of wire bent in half upon itself and includes free ends  162 ,  164  that are formed into loops. The loops are pivotably engaged about with the upper horizontal element  44   a  of the rear panel so that the securing element can freely swing from the element  44   a  when not in use. Each of the two loops of the element  160  has an elongated end portion that extends away from its respective loop and each end portion is formed with a first U-shaped bend  168 , a second U-shaped bend  170 , and a third U-shaped bend  172 . Each of the first and second bends serve a unique basket latching function for holding the upper basket, or the upper and lower baskets, in a collapsed position. The third bend functions as a handle to facilitate a user manipulating the element into a desired position to secure the upper basket, or the upper and lower baskets, in a collapsed position.  FIG. 9  shows the element  160  being used to secure the upper basket when it is in a collapsed position, while  FIG. 10  shows the element  160  being used to secure both the upper and the lower baskets in their collapsed positions.  
         [0063]     In using the element  160  to secure the upper basket assembly in its collapsed position, the first bend  168  is pressed into engagement with a horizontal element in the bottom panel of the upper basket assembly when the upper basket assembly only is pivoted into a collapsed position as shown in  FIG. 2 . When the cart is in this partially collapsed position, goods contained in the lower basket assembly can be accessed. The cart can also be used with the upper basket assembly in a collapsed and secured position when the customer&#39;s purchased goods in the lower basket assembly are taller than the height of the lower basket assembly.  
         [0064]     When using the element  160  to secure both the upper basket assembly and the lower basket assembly in their collapsed positions (see  FIG. 3 ), the first bend  168  is pressed into engagement with a horizontal element in the bottom panel of the upper basket assembly and the second bend  170  is engaged with a horizontal element in the front panel of the lower basket.  
         [0065]      FIGS. 9-11  are dose-up views of a guide member  180  that is incorporated into one side of the lower basket bottom panel. As shown in the Figures, the guide member  180  comprises a U-shaped extension of one of the laterally extending wire elements of which the bottom panel of the lower basket is formed. The guide member  180  projects outwardly of the perimeter of the lower basket bottom panel. The purpose of the guide member  180  is to keep the side wires of the lower basket within the side members  22 ,  23  of the cart when the lower basket assembly is collapsed (i.e., when the upper basket assembly and the lower basket assembly is fully collapsed). Thus, as a user of the cart pivots the upper and lower basket assemblies into a fully collapsed state, the guide member  180  moves from a first position where it is completely out of engagement with the side arms  22 ,  23  ( FIG. 9 ) to a second position where it first makes contact with the side arms  22 ,  23  ( FIG. 10 ), and then to a third position when the cart is fully collapsed ( FIG. 11 ). In moving from the first position to the third position, the guide member  180  functions to keep the basket assemblies between, and within the space between, the side arms of the cart.  
         [0066]      FIGS. 4A and 4B  show U-shaped wire support members  72  formed as extensions of selected adjacent pairs of the vertical wire elements in the front panel of the lower basket assembly. The wire support members  72  extend above the upper “rim”  74  of the lower basket assembly, and function to support the underside  76  of the front portion of the upper basket assembly when the latter is seated atop the lower basket assembly.  
         [0067]     Those skilled in the art will appreciate that various adoptions and modifications of the invention as described above can be configured without departing from the scope and spirit of the invention. Therefore, it is to be understood that, within the scope of the appended claims, the invention may be practiced other than as specifically described herein.