Abstract:
An arrangement for securing a load carrier to a transporting vehicle that includes an anchor mechanism adapted for securement to a transporting vehicle and for releasable engagement with a carrier foot. The carrier foot has a latching mechanism for releasable engagement with the anchor mechanism. The latching mechanism is adapted for latching engagement to, and disengagement from the anchor mechanism by movement of the carrier foot in a direction substantially perpendicular to a longitudinal axis of the carrier foot. An example of such movement is vertical movement substantially of an up and down nature. The latching mechanism has a latching and an unlatching configuration and the latching mechanism is urged toward the latching configuration by a resilient biasing mechanism. The latching mechanism is adapted to move from the latching configuration to the unlatching configuration and back to the latching configuration under the influence of the resilient biasing mechanism and responsive to the carrier foot being positioned into latching engagement upon the anchor mechanism. An example of the resilient biasing mechanism is a spring that yields from a latching configuration to an unlatching configuration of that spring as the latching mechanism moves from its latching configuration to its unlatching configuration.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS  
       [0001]     The present application is a continuation application of U.S. patent application Ser. No. 09/805,370 filed Mar. 13, 2001 which is a continuation-in-part of U.S. patent application Ser. No. 09/259,442 filed Mar. 1, 1999 and issued on 23 Oct. 2001 as U.S. Pat. No. 6,305,589. U.S. patent application Ser. No. 09/805,370 claims the benefit of U.S. Provisional Application No. 60/189,070 filed Mar. 13, 2000. The disclosure of each prior application is expressly incorporated by reference herein, in their entireties. 
     
    
     BACKGROUND OF INVENTION  
       [0002]     1. Technical Field  
         [0003]     The present invention relates generally to vehicular load carriers, and more specifically to load carrier feet and anchors used in the attachment and support of load carriers upon a transporting vehicle.  
         [0004]     2. Background Art  
         [0005]     It is appreciated that a considerable amount of the time that is required to install a load carrier upon a vehicle is that time which is spent on the assembly of the carrier itself before its being attached to the transporting vehicle. As a result, it has been found to be an advantageous feature of carrier designs to enable installation and removal of a partially or fully assembled load carrier on to and off a transporting vehicle.  
         [0006]     Known designs for carrier feet that can be installed upon and disconnected from the transporting vehicle while the carrier remains assembled are typically engaged upon a base fixed to the vehicle using a sliding motion parallel to the longitudinal axis of both the carrier foot and the transporting vehicle. This becomes problematic when the entire carrier is to remain assembled during removal because each foot typically must be simultaneously removed by being slid it off or out of its respective base together with the other feet. Similar difficulty is encountered when trying to install an assembled carrier onto a transporting vehicle&#39;s rooftop or other receiving surface. Each foot must be slidingly engaged upon its respective base, and because that base may not be a perfect fit with the foot, or the base may have become fouled while the foot was disengaged, sliding of the foot onto the base may be resisted. This experience has been likened to trying to slide a sticky drawer into a bureau. Previously, when the feet would each be individually installed upon the respective bases before the load carrier was assembled thereto, an operator could move about the transporting vehicle and manipulate each foot individually. Normally this includes wiggling the carrier foot onto the base in order to slide the carrier foot progressively into a properly seated position upon the base. Having configured each foot, the carrier could then be assembled thereupon. A compounding problem of such a process, however, is that the carrier feet are usually upon the roof of a transporting vehicle at this stage in the process and resultantly assemblage of the load carrier must be awkwardly carried out atop the vehicle. Necessarily, the operator will be reaching atop the transporting vehicle to complete the installation of the load carrier and be required to frequently move about the vehicle because that person&#39;s reach will be limited by the rooftop location.  
         [0007]     Similar problems can be encountered when only a cross bar or strut is connected between two opposite feet and which must be installed to extend from one side to the other of the transporting vehicle. It will be difficult, if not impossible for a single person working alone to slide each foot onto its respective base because he or she will not be able to simultaneously align both feet with the two respective bases as is required for proper sliding engagement.  
         [0008]     Conventional designs for such support feet have required in the past that an exterior cover be opened in order to expose for manipulation the operating device that affects the fastening of the carrier foot to its base. Therefore, when installing the foot upon the base, the exterior cover would normally be open so that the operating device can be manipulated into an open configuration for engagement upon a base or directly to a vehicle. Once engaged, however, the operating device must then again be manipulated to a closed or clamping configuration for fixing the foot to the base or vehicle. The exterior cover of the carrier foot is then closed and locked to prevent unauthorized tampering with the operating device. From the experience of working with these conventionally designed carrier feet, it has been recognized as desirable to minimize not only the exposure of the internal working parts of the foot, but to also minimize required operator interaction during the installation process when both hands can be better used for properly positioning at least the several feet, and possibly an entirely assembled carrier with respect to the various connection points for attachment thereto.  
         [0009]     Another drawback of conventionally designed carrier feet is that they do not typically include an accommodation for adapting to differently configured vehicle mounting surfaces. This is particularly true in cases where the feet are attached to bases at the vehicle&#39;s roof at edge regions where contoured slopes are generally incorporated into the vehicle&#39;s design. Normally, the base for the foot is rigidly attached to the vehicle&#39;s roof in this sloped region and it is the carrier foot that is specially designed to be fixedly attached to that particular type of vehicle/base combination to compensate for the roofs configuration. As a result, the manufacturer of the feet must essentially provide custom designs for differently configured vehicles. It has been recognized as highly desirable by such manufacturers to enable a generic carrier foot design to be utilized on a wide range of differently configured transporting vehicles. Because the primary characteristic affecting this aspect of the design is the degree of slope at the roof region where the base is attached, it has been recognized for the present invention that facilitating pivotation of the carrier foot with respect to the base in the direction substantially parallel to the cross bar with which attachment must be made permits utilization of a uniformly designed carrier foot on multiple and differently configured transporting vehicles and bases.  
         [0010]     In view of the above-described deficiencies associated with known designs for load carrier feet, the present invention has been developed to alleviate these drawbacks and provide benefits to the user, which have been appreciated as desirable at least partially through historical use of these known designs. These enhancements and benefits are described in detail herein below with respect to several alternative embodiments of the present invention.  
       SUMMARY OF INVENTION  
       [0011]     The present invention in its several disclosed embodiments alleviates the drawbacks described above with respect to conventionally designed load carrier feet and incorporates several additionally beneficial features.  
         [0012]     A primary benefit of the carrier foot design of the present invention is that it permits a carrier foot to be engaged upon a supporting base in a substantially vertical direction and without operator manipulation of latching mechanisms in the carrier foot. Installation is accomplished merely by positioning the carrier foot properly upon the base. This eliminates the sliding engagement described above which has been appreciated as a detrimental characteristic of conventionally designed carrier feet. Also, because the latching member of the present invention&#39;s operating mechanism is yieldably biased toward a latching and also locked configuration, the foot can be arranged into the latching and locked configuration before being positioned upon the base and then merely pressed into engagement with the base without further manipulation being required prior to utilization of the carrier foot. A side benefit of this configuration is that it provides a failsafe design because of the bias toward the locked configuration. That is, the carrier foot is urged away from an unlatching or releasable configuration unless specifically reconfigured thereto by the operator. Still further, an advantageous characteristic of this design is that the carrier foot is made install able and disengageable without the use of tools.  
         [0013]     An additional benefit of the present invention is that the operative members of the carrier foot are protectively and permanently housed within the shielding cover of the foot during normal utilization. There is no need to open the foot&#39;s housing since the only part of the operating mechanism requiring user manipulation is a push-button release mechanism. But even when the push button release mechanism is depressed for disengaging the foot from the base, the inner working mechanisms of the foot remain protected within the housing for the device. A locking mechanism is provided that is capable of preventing depression of the push button release mechanism and in turn unauthorized disengagement of the rack from the base. As in traditional designs, the lock is manipulated between locked and unlocked configurations using a conventionally cut key.  
         [0014]     As discussed, in order to adapt a universally designed foot to different roof configurations and therefore different transporting vehicles without varying the carrier foot&#39;s construction, the latching mechanism in the foot includes a latch body that inserts into a space provided under a cylindrical catch bar thereby fastening the foot to the base. The latch body, however, is not fixed to the catch bar of the base, but instead is permitted to slide there-around. In this manner, pivotation of the foot about a longitudinal axis of the catch bar, which is parallel to a longitudinal axis of the foot, is facilitated thereby making it possible to adapt the same foot to differently configured vehicle roof designs. That is, the foot can be variably configured with respect to the base depending upon the pitch of the particular vehicle&#39;s roof at the point at which the base is connected. The top or head portion of the carrier foot in which a cross bar or load strut is engageable is manufactured to be exchangeable on the intermediate body portion of the foot. In the illustrated embodiment, the head portion is permanently fastened to the intermediate body portion before distribution to an end user. In this manner, the configuration of the foot is easily adapted by the manufacturer depending upon the anticipated shape and design of the cross bar expected to be utilized with the particular foot. In the preferred embodiment, a securing mechanism used for releasably securing the cross bar to the head portion of the carrier foot incorporates members having opposed ramped surfaces that when slid relative to one another cause expansion and/or contraction of the securing mechanism into and/or out of securing engagement with the cross bar. An analogous securing device has been more fully described in commonly owned U.S. Pat. No. 5,038,988, the disclosure of which is expressly incorporated herein by reference.  
         [0015]     The separate construction of the base member from the carrier foot body makes it possible for that base member to be custom designed for installation upon a particularly configured vehicle. The connection between the base and the carrier foot, however, is made generic so that the foot body need not be individually adapted for different vehicles. This makes providing an array of product for different vehicles much less expensive than in cases in which each foot must to be custom-adapted for a particular vehicle.  
         [0016]     As shown, the base can be left on the transporting vehicle with the catch bar exposed when a footed load carrier is not being used. The catch bar can be utilized as a tie-down loop in this configuration for securing other types of loads to the vehicle.  
         [0017]     In at least one embodiment, the present invention takes the form of an arrangement for securing a load carrier to a transporting vehicle. The arrangement includes an anchor mechanism that is adapted for securement to a transporting vehicle and for releasable engagement with a carrier foot. The carrier foot of the invention has a latching mechanism for releasable engagement with the anchor mechanism. The latching mechanism is adapted for latching engagement to and disengagement from the anchor mechanism by movement of the carrier foot in a direction substantially perpendicular to a longitudinal axis of the carrier foot. An example of such movement is vertical movement substantially of an up and down nature. The latching mechanism has a latching and an unlatching configuration and the latching mechanism is urged toward the latching configuration by a resilient biasing mechanism. Further, the latching mechanism is adapted to move from the latching configuration to the unlatching configuration and back to the latching configuration under the influence of the resilient biasing mechanism and responsive to the carrier foot being positioned into latching engagement upon the anchor mechanism. An example of the resilient biasing mechanism is a spring that yields from a latching configuration to an unlatching configuration of that spring as the latching mechanism moves from its latching configuration to its unlatching configuration.  
         [0018]     In the illustrated embodiment, the latching mechanism has an operating mechanism for configuring the latching mechanism between the latching and the unlatching configurations. As shown, the operating mechanism includes a push-button actuator for operating the latching mechanism between the latching and the unlatching configurations. The push-button actuator is operatively associated with and controlled by a lock mechanism that is configured for alternatively allowing and preventing operation of the operating mechanism. Furthermore, the push-button actuator also cooperates with a resilient biasing mechanism for urging the push-button actuator toward a latching configuration.  
         [0019]     The arrangement includes a housing configured to encase the operating mechanism and the latching mechanism thereby preventing access to such working mechanisms of the carrier foot. In a preferred embodiment, the push-button actuator is exposed through the housing for operator manipulation. That is, the only portion of the carrier foot that the operator must engage is the push-button actuator, and that is only when disengagement is required. Installation is accomplished without the operator having to manipulate the carrier foot at all, other than to move it into the latched configuration. Optionally, a lock mechanism may also be carried in the push-button actuator for preventing unauthorized actuation.  
         [0020]     The anchor mechanism has a catch member and the latching mechanism has a latch body. The latch body is configured for latching cooperation with the catch member. In the illustrated embodiment, the catch member is a bar suspended between a pair of supports. The bar defines a catch area underneath itself for accepting at least a portion of the latch body therein.  
         [0021]     The anchor mechanism is adapted to be fixed upon a vehicle with the catch member disposed at a distance from the vehicle. Usually, and as illustrated, this location is proximate the roof edges of the vehicle. The latch body has an abutment surface designed for engagement with the catch member in a latched configuration. As shown, the latch body has an inclined surface that is arranged for sliding engagement against the catch member as the carrier foot is installed upon the anchor mechanism. This sliding engagement causes the latching mechanism to move from the latching configuration into the unlatching configuration thereby permitting installation of the carrier foot into latched engagement upon the anchor mechanism.  
         [0022]     Still further, the latching mechanism can be adapted to permit pivotation of the carrier foot about an axis that is substantially parallel to the longitudinal axis of the carrier foot while the carrier foot is latched to the anchor mechanism. This makes it possible for the carrier foot to be utilized on variously pitched vehicular support surfaces, usually automobile roofs having different shapes at their edge regions.  
         [0023]     The latching mechanism has an operating mechanism for configuring the latching mechanism between the latched and the unlatching configurations. As shown, the operating mechanism has a pushing shoulder adapted to engage a receiving shoulder of the latch body for transferring or conveying movement of the operating mechanism to the latch body.  
         [0024]     In at least one embodiment of the present invention, an exchangeable head assembly is provided that is coupleable; that is, designed to be connected to a top portion of the housing encasement. The exchangeable head assembly is adapted for releasable fixation with a load carrier cross bar. When mounted upon a vehicle, a load carrier cross bar is coupled or connected between two such carrier feet that are each positioned near to opposite end portions of the load carrier cross bar for suspending the cross bar atop the transporting vehicle.  
         [0025]     As illustrated, the anchor mechanism additionally includes at least one insert adapted to be securably received in a channel portion of a vehicularly-mounted rooftop track. It is in this way that that particular version of the invention is secured upon a vehicle&#39;s roof that is adapted with such tracks.  
         [0026]     In another embodiment, the present invention takes the form of an arrangement for securing a load carrier to a transporting vehicle that has an anchor mechanism adapted for securement to a transporting vehicle and for releasable engagement with a carrier foot. The anchor mechanism has a catch member that is configured for engagement with a latching mechanism. A carrier foot has a latching mechanism that is adapted to assume a latched configuration responsively to being positioned upon the catch member. The arrangement is further adapted to permit pivotation of the latching mechanism relative to the catch member when in a latched configuration so that the carrier foot is permitted to be variably positioned with respect to the anchor mechanism after assumption of the latched configuration.  
         [0027]     Still another embodiment of the invention takes the form of a method for securing a load carrier to a transporting vehicle. The method includes providing an anchor mechanism that is adapted for being secured to a transporting vehicle and for releasable engagement with a carrier foot. The anchor mechanism has a catch member that is configured for engagement with a latching mechanism. A carrier foot is installed that has a latching mechanism upon the catch member. The latching mechanism is adapted to assume a latched configuration under the exclusive actuation of the catch member in response to the carrier foot being installed upon the anchor mechanism.  
         [0028]     The method further includes resiliently biasing the latching mechanism toward a latching configuration before the carrier foot being installed upon the anchor mechanism. The latching mechanism is then reconfigured from the latching configuration to an unlatched configuration and then to the latched configuration based solely on its cooperation with the catch member as the carrier foot is being installed upon the anchor mechanism. After such installation, the carrier foot may be pivoted relative to the anchor mechanism about an axis substantially parallel to a longitudinal axis of the carrier foot after being installed upon the anchor mechanism and while the latching mechanism is in the latched configuration.  
         [0029]     The beneficial effects described above apply generally to the exemplary devices and mechanisms disclosed herein of a load carrier foot arrangement. The specific structures through which these benefits are delivered will be described in detail hereinbelow. 
     
    
     BRIEF DESCRIPTION OF DRAWINGS  
       [0030]     The invention will now be described in greater detail in the following way of example only and with reference to the attached drawings, in which:  
         [0031]      FIG. 1  is an exploded perspective view of a carrier foot arrangement (and shown in context with anchor, bar, channel, and vehicle) constructed according to the present invention;  
         [0032]      FIG. 2  is a partial cut-away and partial cross-sectional view taken substantially along a bisecting centerline of the carrier foot arrangement of  FIG. 1  in a latching configuration;  
         [0033]      FIG. 3  is a partial cut-away and partial cross-sectional view taken substantially along a bisecting centerline of the carrier foot arrangement of  FIG. 1  in an unlatched configuration;  
         [0034]      FIG. 4  is an assembled perspective view of a carrier foot arrangement in accordance with preferred embodiments of the present invention;  
         [0035]      FIG. 5  is an exploded view demonstrating a spacer configured to be positioned between a base unit and a track channel in accordance with preferred embodiments of the present invention;  
         [0036]      FIG. 6  is a perspective view of a spacer in accordance with preferred embodiments of the present invention;  
         [0037]      FIG. 7  is a perspective view of a bolt aperture in the spacer of  FIG. 6 ;  
         [0038]      FIG. 8  is a bottom perspective view of a spacer connected to a base unit in accordance with preferred embodiments of the present invention;  
         [0039]      FIG. 9  is a top perspective view of a spacer positioned in a track slot;  
         [0040]      FIG. 10  is a cross-sectional view of a base attached to a track slot, including a spacer in accordance with preferred embodiments of the present invention;  
         [0041]      FIG. 11  is a perspective view of an accommodation unit interconnecting an anchor and a channel in accordance with preferred embodiments of the present invention;  
         [0042]      FIG. 12  is a cross-sectional view of an accommodation unit installed interstitially between a specially configured base unit and a side-access channel in accordance with preferred embodiments of the present invention; and  
         [0043]      FIG. 13  is an exploded perspective view illustrating a base cover installed over a base unit in a spacer-incorporating configuration in accordance with preferred embodiments of the present invention. 
     
    
     DETAILED DESCRIPTION  
       [0044]     As required, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various and alternative forms. The figures are not necessarily to scale, some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention.  
         [0045]     Referring to the figures and particularly to  FIG. 1  at this time, a partial section of the roof region of a transporting vehicle is shown with a track channel  11  installable thereupon. The channel  11  typically has a C-shaped transversely viewed cross-section and may be mounted upon the upper exterior surface of an edge region of a vehicular roof or recessed thereinto. In either case, the track channel  11  is provided to accept insert portions  30  of an anchor mechanism  18  that is designed as a component of an arrangement  16  for securing a load carrier to transporting vehicle  10 . The anchor mechanism  18  serves as a support platform for a load carrier foot  32 . In this illustrated embodiment, the anchor mechanism  18  includes square inserts  30  that are connected to a base portion  19 , one each by a threaded screw  21 . In use, the inserts  30  are positioned within the channel  11  with the threaded screw  21  inserted through a lengthwise top opening into the channel  11 . The headed portion of the screw  21  is located above the base portion  19  and the threaded portion of the screw  21  extends through the base portion  19  and into a receiving aperture, typically threaded, of the insert  30 . The base portion  19  is fixed with respect to the channel  11 , and in turn the transporting vehicle  10  by sufficiently tightening the screws  21  so that the insert  30  is drawn up against the underside of the inwardly extending flanges of the channel  11  and so that a lower surface of the base portion  19  is pressed firmly against the topside of the inwardly extending flanges of the channel  11 .  
         [0046]     The arrangement  16  for securing a load carrier to a transporting vehicle  10  places the carrier foot  32  above the anchor mechanism  18 . A top portion  36  of the carrier foot  32  is adapted to accept an exchangeable head assembly  84 . The exchangeable head assembly  84  is provided for releasable engagement with a load carrier cross bar  12 , typically at an end portion  14  thereof. Each head assembly  84  is adapted to be exchangeable with differently configured head assemblies  84 . An array of head assemblies  84  may be differently configured because each is designed for releasably capturing a load carrier cross bar  12  having a different shape and design. Typically, the head assembly  84  will only be exchangeable for the manufacturer of the arrangement  16  and not the purchaser. That is, as far as the end-user or consumer is concerned, the head assembly  84  is a permanent part of the carrier foot  32 ; and as such, may alternately be commonly encased with the rest of the foot  32 . One example of how a head assembly can be made readily interchangeable is by using threaded screws to couple the head assembly  84  to the top  36  of the intermediate portion  37  from within the protected space of the interior region of the carrier foot  32 . In this manner, the consumer will not easily access the operational or headed end of the screw. The exchangeable nature of the head assembly  84  is provided so that a manufacturer can easily vary the configurations of the carrier foot  32  to accommodate a wide array of variously styled crossbars  12  that the consuming public may desire to use in combination with the carrier foot  32  of the present invention.  
         [0047]     As shown, the head assembly  84  includes a sliding wedge  86  that cooperates with an oppositely configured inclined plane within the head assembly  84 . By drawing the sliding wedge  86  up the inclined plane, a tightening engagement between the wedge  86  and a corresponding surface of the load carrier cross bar  12  is affected. In the illustrated embodiment, a threaded bolt&#39;s  90  incorporation with a nut  92  is utilized for moving the wedge  86 . A spring  88  is shown that acts to bias the wedge  86  down the inclined plane and toward a released configuration in which the cross bar  12  is permitted to slide longitudinally in the head assembly  84 . Once the cross bar  12  is properly positioned and fixed to the carrier foot  32 , an end cap  15  may be pressingly installed upon the exposed end of the cross bar  12  for closing and providing a finished appearance for the cross bar  12  outside the carrier foot  32 .  
         [0048]     Referring to  FIG. 1 , the configuration of the anchor mechanism  18  may be appreciated. Extending upwardly from the base portion  19  is a pair of supports  26  that form flanges to which a catch member  20  is installable and fixable. In the illustrated embodiment, the catch member  20  takes the form of a cylindrical bar  22  having end portions retained within apertures that extend through each of the pair of supports  26 . As will be described in detail hereinbelow, a central axis of the bar  22  serves as a pivotation axis  24  about which the carrier foot  32  is pivotable in an installed configuration. In this manner, the bar  22  is suspended above an open space that defines a catch area  28 .  
         [0049]     The carrier foot  32  includes an intermediate body portion  37  having a housing encasement  82  that covers and protects the internal working mechanisms of the foot  32 . One of those working mechanisms is a latching mechanism  38  utilized for releasably securing the carrier foot  32  to the anchor mechanism  18 .  
         [0050]     Serving as a support for the latching mechanism  38  are two side flanges  73 , each having an aperture therethrough for receiving a pivot axle  70  upon which a latch body  60  is journaled for pivotation between a latching configuration and an unlatching configuration. The latch body  60  is designed so that at least a portion thereof is insertible into the catch area  28  underneath the catch member  20 .  
         [0051]     Referring to  FIG. 1 , an exploded configuration of the latch body  60  is shown depicting and interior body portion  63  sandwiched between two exterior ears  66 . In a preferred embodiment, the interior body portion  63  is constructed from lightweight plastic and the exterior ears  66  are constructed from steel that is more durable. In this manner, most of the forces being conveyed through the latch body  60  are concentrated within the stronger ear portions  66 . A resilient biasing mechanism  40  in the form of a spring  42  is utilized to urge the latch body  60  toward the latching configuration. The latching configuration is depicted in  FIG. 2  in which an abutment surface  76  of the latch body  60  is under and in abutting engagement with the catch member  20 .  
         [0052]     The carrier foot  32  and the anchor mechanism  18  are configured so that the foot  32  can be pressed or positioned into latched engagement with the anchor mechanism  18  without further operator manipulation. To enable this feature, the installation process is initiated with the latch body  60  in the orientation depicted in  FIG. 2 . In this manner, as the carrier foot  32  is moved into position adjacent to the anchor mechanism  18 , an inclined surface  77  of the latch body  60  (a surface which is exposed toward the anchor mechanism  18 ) is generally the first portion of the carrier foot  32  to engage the catch member  20  upon proper approach. After initial engagement and as the carrier foot  32  is moved further down onto the anchor mechanism  18 , the bar  22  of the catch member  20  slides up the inclined surface  77  pressing the latch body  60  backward out of the bar&#39;s  22  way and in the process compresses the resilient biasing mechanism  40 .  
         [0053]     As illustrated, the resilient biasing mechanism  40  takes the form of the spring  42 . Once the carrier foot  32  is moved sufficiently far down upon the anchor mechanism  18  to be properly seated thereupon, the catch member  20  has slid beyond a top edge of the inclined surface  77  so that the latch body  60  springs outwardly into the catch area  28  under the influence of the spring  42 . In this position, the abutment surface  76  is properly position to catch under the catch member  20 . Under the bias of the spring  42 , the latch body  60  will remain in the latching configuration under the catch bar  22  until purposely moved to an unlatching configuration by the operator.  
         [0054]     The unlatching configuration of the arrangement  16  is illustrated in  FIG. 3 . Therein, an operating mechanism  44  is shown depressed into the carrier foot  32 . The purpose of the operator depressing the operating mechanism  44  is to cause the pushing shoulder  52  of the operating mechanism  44  to also travel inwardly and engage the receiving shoulder  80  of the latch body  60 . Continued inward travel of the pushing shoulder  52  causes the latch body  60  to be pivoted back out of the catch area  28  so that the abutment surface  76  is no longer trapped under the catch member  20 . This effectively disengages the carrier foot  32  from the anchor mechanism  18 . The carrier foot  32 , and any load carrier or load carrier cross bar  12  connected to the foot  32  can now be lifted away from the transporting vehicle  10 . The operating mechanism  44  is manipulated by an operator through the use of the push-button actuator  46  which is at least partially exposed through the housing encasement  82 . The actuator  46  includes guide prongs  45  as illustrated. An interior travel guide  47  is provided that is fixed upon a housing closure member  83  that matingly engages with the housing encasement  82  to form a substantially complete enclosure for the intermediate body portion  37  of the carrier foot  32 . The interior travel guide  47  has an exterior surface complimentarily configured to facilitate gliding operation of the push button actuator  46  thereupon. Still further, the interior travel guide  47  has receivers specifically arranged to form prong tracks  49  within which the guide prongs  45  slide and which also assist in guiding travel of the push button actuator  46  and its associated components, including the pushing shoulder  52 .  
         [0055]     A resilient biasing mechanism  50  in the form of a coil spring is provided to urge the push button actuator  46  toward an un-actuated configuration as is shown in  FIG. 2 . In this manner, the pushing shoulder  52  will normally be moved away from the latch body  60  unless purposefully depressed by and operator to cause the assumption of the unlatching configuration of the carrier foot  32 .  
         [0056]     A lock mechanism  48  is provided for cooperation with the push button actuator  46  of the operating mechanism  44 . In the illustrated embodiment, the lock mechanism  48  is of a conventional design having a head portion with a protrusion that can be rotated into and out of locking engagement with a receiving recess using a conventional key. When in the locked configuration, the protrusion of the lock mechanism  48  prevents sliding operation of the push button actuator  46  upon the travel guide  47  because the protrusion is caught within the recess in the body  37  of the carrier foot  32 . In this manner, unauthorized disengagement of the carrier foot  32  from the anchor mechanism  18  is prevented. Because the latch body  60  is spring biased toward the latching configuration, the operating mechanism  44  can be locked prior to the foot  32  being positioned upon the anchor mechanism  18  and further manipulation by the operator is not required for affecting locked and latched connection of the foot  32  thereupon. A sliding cover  110  is shown in  FIG. 1  and  FIG. 4 . As depicted in  FIG. 4 , the cover  110  is provided at an exterior surface thereof with frictional ridges intended to be engaged by a person&#39;s thumb or finger. When in the position shown in  FIG. 4 , the cover  110  completes the enclosure of the housing about the carrier foot  32 . During installation and removal of the foot  32  to a carrying vehicle, however, the cover  110  can be moved into a downward position when the push a button actuator  46  of the lock mechanism  48  is depressed. In so doing, the actuator  46  will be maintained in a released configuration. This greatly assists a user by making it possible to maintain two feet at opposite ends of a cross bar  12  in released configurations until purposefully engaged to the anchor  18 . This is particularly important when it is considered that each of the two feet of the pair are typically configured for engagement to and removal from the anchors  18  at opposite sides of the vehicle. Preferably, the feet are concurrently moved to the releasing configuration at least for removal. This dual released configuration may also be desired during installation when proper positioning is initially required, and then the two separate feet are moved into the engaged configuration.  
         [0057]     The sliding operation of the cover  110  may be accomplished by any suitable configuration, but a tongue-in-groove arrangement is preferably utilized. Still further, by having the tongue frictionally fit within the groove, upward and downward positions of the cover  110  may be maintained until purposely moved by the user.  
         [0058]      FIG. 5  discloses an exploded view of an anchor mechanism  18  with a spacer  115  positioned between the base  19  and a track channel  11 . Because of the reduced-width slot through which the inserts  30  must pass into the interior space of the track channel  11 , each insert  30  is configured in the shape of a parallelogram as illustrated. The inserts  30  are configured to accommodate their insertion through the top of the channel  19  because the end portions of the track are difficult to remove for providing access. When tightening the base  19  to the track  11 , the threaded screws or bolts  21  are rotated thereby pulling the insert  30  toward the base  19 . Before a tightened orientation is achieved, it is possible for there to be play between the base  19  and the top of the track  11 . In this condition, it is possible for either or both of the inserts  30 , or a portion thereof, to protrude back out of a slot of the track  11  thereby fouling its engagement therein.  
         [0059]     This condition in which an end portion of the insert  30  can protruded out of the slot of the track  11  is more likely to occur when the base  19  is not centered above the slot of the track  11 . Therefore, the spacer  115  has been provided to establish a proper orientation and to prevent the unintended protrusion and misinstallation of the insert  30  into the channel of the track  11 . The insert  115  has a pin-portion  130  at its upper surface intended to be inserted into a receiver at the bottom of the base  19 . An expanded portion  116  at the bottom side of the spacer  115  is configured for insertion into the slot of  10  the track  11 . As shown in  FIG. 6  and  FIG. 7 , bolt apertures  120  are provided at each end of the spacer  115  for accepting the threaded bolts  21  therein. Threaded inserts or protrusions  125  are provided at an interior periphery of the apertures  120  for engaging the threads of the bolts  21 . In this manner, the bolts  21  are prevented from unintentionally disengaging from those apertures  120  in the event that the spacer  115  is turned upside down during the installation process. Still further, these protrusions  125  keep the easily separable bolts  21  and spacer  115  together so that they are less likely to be lost one from the other.  
         [0060]      FIG. 8  provides a perspective bottom view of an assembled anchor mechanism  18  and spacer  115 .  FIG. 9  provides a top perspective view of a spacer  115  located in the track  11  with the inserts  30  shown in their properly installed orientation.  FIG. 10  shows a cross-sectional view of an assembled arrangement of a base  19  with a spacer  115  properly installed in a track  11 .  
         [0061]      FIG. 11  shows an alternative track configuration  11   a  in which the access slot is provided in a sidewall thereof. As shown, this slot is typically too close to the top surface of the carrying vehicle  10  for adequate utilization. Still further, a problem occurs when clamping to such a track because the slot is perpendicular to the roof surface of the vehicle. As a result, unless otherwise configured the base would rotate out of the slot. To counter this motion, a stop  147  has been incorporated into a mounting bracket. The mounting bracket is characterized as an accommodation unit  140 .  FIG. 12  shows a cross-sectional view in which the accommodation unit  140  is provided for connecting an alternatively configured base  19   a  to the track  11   a.  In the illustrated embodiment, the accommodation unit  140  includes an insert tab  145  that runs longitudinally along the length of the accommodation unit  140  and is configured to be inserted into the sidewall access slot of the track  11   a.  The tab  145  is turned up at its distal end for engagement with interior lips of the slot. In other respects, the accommodation unit  140  is configured to properly position the base  19   a  with respect to the track  11   a  for operation and utilization.  
         [0062]      FIG. 13  provides a perspective view in which a base cover  150  is shown that can be readily installed upon the base  19 . It is a characteristic of the present invention that the base portion  19  may remain attached to the carrying vehicle  10  even when the rack system is detached therefrom. The interior workings of the base portion  19 , however, remain exposed when a carrier foot  32  is not installed there upon. Therefore, it is desirable to have a cover such as that shown as the base cover  150  that not only serves an aesthetic purpose, but also protects the mechanisms of the base  19  from dirt and possible damage if struck by an object. Still further, the base cover  150  can provide protection for persons in its vicinity or who may be struck by the base  19  because of the smooth exterior surface of the cover  150  that is less likely to gouge into a person or object upon contact. The connection assembly between the cover  150  and the base  19  can be similarly configured to the connective mechanisms disclosed for the carrier foot  32 , or any other suitable releasable connective arrangement adequate to serve this purpose.  
         [0063]     An arrangement  16  for securing a load carrier to a transporting vehicle  10  has been described herein. These and other variations, which will be appreciated by those skilled in the art, are within the intended scope of this invention as claimed below. As previously stated, detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention that may be embodied in various forms.  
         [heading-0064]     Industrial Applicability  
         [0065]     The present invention finds applicability in the vehicular load carrier industries.