This application is directed generally toward a vehicle rack and more specifically toward a magnetically coupled vehicle rack.
Numerous types of vehicle racks for carrying surfboards, skis, snowboards, kayaks and other elongated objects are known in the relevant art. Each of these vehicle racks has various advantages and disadvantages, including initial cost of the vehicle rack itself, the ease with which the vehicle rack can be mounted and removed from the vehicle, the relative ease with which the elongated object(s) can be secured in the vehicle rack, the number of elongated object(s) readily mounted therein, etc. In the past, a common type of vehicle rack included a pair of static vehicle rack assemblies adapted to be secured across the vehicle, typically in a paired spaced relationship upon a vehicle rooftop. Each assembly typically included a lower elongated member and an upper elongated member attached to the lower member so as to form an inverted U shaped structure. The raised cross-sectional profile adds to aerodynamic resistance and allows aerodynamic forces to be generated on the undersides of the elongated object(s) which requires additional structural integrity to ensure that the added aerodynamic forces do not overcome the restraints used to anchor the elongated object(s) to the vehicle rack assemblies.
In addition, metal frame based vehicle racks tend to be heavy, cumbersome to setup and disassemble, require multiple parts, are subject to corrosion, particularly when exposed to saltwater environments and lastly are bulky to store. Accordingly, there is a need in the relevant art for a lightweight and low cost vehicle rack that is simple to setup, remove and store and avoids one or more of the undesirable properties of vehicle racks known in the relevant art.
In view of the foregoing, various exemplary embodiments of a magnetic vehicle rack are disclosed herein. The exemplary embodiments described provide a lightweight, easily installed and removed vehicle rack which is compact, offers reduced aerodynamic resistance and is adaptable to a wide variety of vehicles without specialized parts. In an exemplary embodiment, the magnetic vehicle rack may include an elongated body constructed from a deformable polymeric material. The elongated body may include an arciform or wedge shaped cross-sectional profile, an oblate top surface and a planar bottom surface. The elongated body may be provided with one or more axially aligned apertures dimensioned to receive an incurvate spine therethrough.
The aperture facilitates insertion and axial positioning of an incurvate spine in a slidable and snug fit relationship. The incurvate shape of the incurvate spine and dimensions of the aperture(s) within the elongated body further allows the incurvate spine to uniformly distribute static and dynamic forces arising from an elongated payload coupled with the oblate top surface throughout the elongated body. The elongated payload may be coupled with the magnetic vehicle rack using a plurality of restraints.
The magnetic vehicle rack may be removably coupled to the non-planar vehicle surface with one or more permanent magnet(s) disposed along the bottom surface of the elongated body, generally between proximal and distal ends of the elongated body. The one or more permanent magnet(s) cumulatively provides sufficient magnetic attractive force to allow the magnetic vehicle rack and elongated payload to remain coupled to the non-planar vehicle surface at vehicular speeds below a predetermined vehicle speed, typically 100 miles per hour exclusive of head or cross winds.
The features and advantages of the various exemplary embodiments will become apparent from the following detailed description when considered in conjunction with the accompanying drawings. Where possible, the same reference numerals and characters are used to denote like features, elements, components or portions of the inventive embodiments. It is intended that changes and modifications can be made to the described exemplary embodiments without departing from the true scope and spirit of the inventive embodiments as is defined by the claims.
FIG. 1—depicts a first transparent isometric view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 2A—depicts a first transparent side view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 2B—depicts a second transparent side view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 2C—depicts a first end view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 2D—depicts a side view of an incurvate spine in accordance with an exemplary embodiment.
FIG. 3A—depicts a top transparent view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 3B—depicts a first bottom view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 3C—depicts a second bottom view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 4—depicts a second transparent isometric view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 5—depicts a third bottom view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 6A—depicts a second end view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 6B—depicts a third end view of a magnetic vehicle rack in accordance with an exemplary embodiment.
FIG. 7—depicts a front view of a post in accordance with an exemplary embodiment.
FIG. 8—depicts a top view of a magnetic vehicle rack mounted on a vehicle in accordance with an exemplary embodiment.
Various exemplary embodiments of a magnetic vehicle rack are disclosed herein. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present inventive embodiments. It will be apparent, however, to one skilled in the art that the present inventive embodiments may be practiced without these specific details. In other instances, well-known structures, devices or components may be shown in block diagram form in order to avoid unnecessarily obscuring the present inventive embodiments.
Referring to
The elongated body 5 includes an aperture 10 which axially spans a long dimension of the vehicle rack 100. The aperture 10 is dimensioned to receive an incurvate spine 15 which may extend beyond proximal and distal ends 40, 45 of the elongated body 5. The aperture 10 may be aligned to allow the incurvate spine 15 to be inserted with the curved profile generally in parallel with a base element 30 of the elongated body 5. The base element 30 preferably includes a width approximately 1.4-1.6 times greater than a width of an upper support element 25. The exact relationship of the width of the base element 30 and upper support element 25 may be varied to accommodate other design objectives. To reduce wind resistance across the longitudinal dimension of the elongated body 5, a wedge or arciform shape is preferred.
In an exemplary embodiment, an interior wall 10′ surrounding the aperture 10 forms coincident engagement element(s) 330 (
The elongated body 5 likewise minimizes aerodynamic lifting forces on an anchored payload 810 (
A base element 30 of the elongated body 5 includes one or more permanent magnet(s) 35 disposed therewith. The one or more permanent magnet(s) 35 may be periodically disposed along the base element 30 of the elongated body 5 in either a regular or staggered pattern. The one or more permanent magnet(s) 35 may be incorporated into the polymeric construction of the elongated body 5 at the time of formation or separately added thereafter. The cumulative magnetic attractive force generated by the one or more permanent magnet(s) 35 temporarily deforms the elongated body 5 into conformational alignment with the exterior surface of a vehicle. Conformational alignment occurs when the base element 30 of the magnetic vehicle rack 100 is in a direct face-to-face relationship with a symmetrically curved surface of the vehicle such that void spaces between the vehicle rack 100 and the curved surface of the vehicle are minimized.
The one or more permanent magnet(s) 35 should cumulatively provide a magnetic pull strength which preferably exceeds 120 pounds. The magnetic strength of the one or more permanent magnet(s) 35 may be staggered to provide greater attractive forces for the outer sets of permanent magnet(s) than those disposed approximately about the longitudinal center of the elongated body 5. The one or more permanent magnet(s) 35 cumulatively provide sufficient magnetic attractive force to maintain the magnetic vehicle rack 100 and payload 810 (
In one exemplary embodiment, the bottom surfaces of the one or more permanent magnet(s) 35 may include a non-abrasive surface to prevent marring of the non-planar vehicle surface (not shown). In another exemplary embodiment, the one or more permanent magnet(s) 35 may be formed from a unitary flexible sheet of magnet embedded polymeric material. For example, Plastalloy™ Flexible Magnets, available from The Electrodyne Company, Inc., 4188 Taylor Road, Batavia, Ohio 45103. The magnet embedded polymer should provide a magnetic attraction force in a range of 0.5 to 2.0 pounds per square inch. The base element 30 incorporating the embedded magnetic material may be flared in a somewhat biconical arrangement at about the proximal 510 and distal ends 510, 530 (
In one exemplary embodiment, the one or more permanent magnet(s) 35 may be constructed from a rare earth, for example, neodymium or samarium based alloys. In this exemplary embodiment, the shape of the one or more permanent magnet(s) 35 is generally elongated with at least one planar surface which allows maximum attractive force to be applied to a ferromagnetic surface of a vehicle. In all embodiments, the one or more permanent magnet(s) 35 include sufficient magnetic attractive forces to deform the elongated body 5 to match a surface contour of a vehicle. Uniform load distribution through the elongated body 5 is accomplished by insertion and axial positioning of the incurvate spine 15 as is discussed below. In another exemplary embodiment, insertion of the incurvate spine 15 may be used to align the one or more permanent magnet(s) 35 into a proper orientation for mounting or dismounting of the magnetic vehicle rack 100 onto or from a vehicle.
Referring to
Axial positioning 205 of the incurvate spine 15 is intended to align the incurvate spine 15 in conformation with the surface contour of the vehicle on which the magnetic vehicle rack 100 is mounted. The incurvate spine 15 when properly positioned within the aperture 10 distributes lifting forces incident on a payload anchored to the magnetic vehicle rack 100 equally throughout the elongated body 5 and the one or more permanent magnet(s) 35. The incurvate spine 15 should have sufficient strength to transmit restraining forces to each of the one or more permanent magnet(s) 35 without substantial self deformation while remaining generally congruent with a surface contour of the vehicle on which the magnetic vehicle rack 100 is mounted.
Referring to
Suitable construction materials for the incurvate spine 15 include but are not limited to fiberglass, aluminum alloys, carbon fiber and austenitic stainless steel. In one exemplary embodiment, contralateral attachment positions 220, 225 for coupling of restraints 305 (
While being inserted into conformational alignment and/or congruence with a vehicle's surface contour, the incurvate spine 15 is rotated into a downward facing arc relative to a contact surface of the vehicle by the magnetic attractive force generated by the one or more permanent magnets 35. The arced position prevents axial rotation by the incurvate spine 15 and may assist in maintaining the magnetic base element in conformational alignment with the vehicle's surface. In an exemplary embodiment, a locking mechanism may be used to lock the incurvate spine 15 within the elongated body 5 (not shown). By way of example and not limitation, a locking mechanism may include a star-patterned plug on a portion of the incurvate spine 15 with a counterpart star-patterned socket included in a portion of the elongated body 5, insertion of a locking pin which traverses portions of both the elongated body 5 and incurvate spine 15 and/or a clamping mechanism which is engaged by the user when the incurvate spine 15 is properly aligned within the aperture(s) 10. A lock tab extending from a side of the incurvate spine 15 may also be provided to prevent unauthorized removal of the magnetic vehicle rack 100 from the vehicle (not shown.) Alternately, a C-clip or Cotter pin may be provided at about the distal end of the incurvate spine 15 (not shown) in order to prevent the incurvate spine 15 from becoming dislodged from the aperture 10.
In one exemplary embodiment, the contralateral attachment positions 220, 225 are symmetrically at about 21% and about 79% of the length of the incurvate spine 15 (
Referring to
The restraints 305, 305′ may be coupled with posts 330, 330′ disposed at the contralateral attachment positions 220, 225 (
Referring to
In one exemplary embodiment, the one or more permanent magnet(s) 35 are mounted flush with the base element 30 of the elongated body 5 so as to ensure minimal aerodynamic forces are exerted on the magnetic vehicle rack 100 and/or elongated payload 810 (
Referring to
The posts 330, 330′ also perform the function of coincident engagement element(s) 330, 330′ (
A unitary flexible sheet of polymeric material embedded with permanent magnetic material coupled to an underside face of the mild steel plate 420 forms a magnetic base element 30 which is used to magnetically couple the magnetic vehicle rack 100 to an exterior surface of a vehicle. The one or more permanent magnets 35 are incorporated within the magnetic base element 30. The mild steel plate 420 is intended to improve magnetic permeability and coupling with the ferromagnetic surface of the vehicle. The proximal 510 and distal ends 530 of the magnetic base element 30 may be provided in a general biconical 510, 520, 530 relationships which provide greater magnetic surface area at the proximal 40 and distal ends 45 of the elongated body 5. The increased magnetic surface area provided by the biconical shape improves magnetic coupling of the magnetic vehicle rack 100 to the exterior surface of the vehicle. One skilled in the art will appreciate that other shapes and/or increasing the length of the magnetic base element 30 may be implemented to increase the magnetic attractive force as required to meet a particular design objective.
Referring to
Referring to
As mentioned above, the elongated body 5 may be coupled to the mild steel plate 420 using a slot and tab arrangement. The elongated body 5 includes opposing lateral base tabs 610, 610′ which are affirmatively engaged with opposing interior slots 615, 615′ formed into the mild steel plate 420. Perpendicular stops 605, 605′ are also formed into the mild steel plate 420 which prevents the opposing lateral base tabs 610, 610′ from being displaced from the opposing interior slots 615, 615′. In effect, the opposing interior slots 615, 615′ and perpendicular stops 605, 605′ form parallel channels in which the opposing lateral base tabs 610, 610′ of the elongated body 5 are affirmatively coupled to the magnetic base element 30. To ensure that the elongated body 5 remains affirmatively coupled to the magnetic base element 30, an adhesive should be used to bond the opposing lateral base tabs 610, 610′ to a top face of the mild steel plate 420 and directly with permanent magnet(s) 35 coupled to the underside face of the mild steel plate 420.
Referring to
A width of the contralateral upper side portions 715, 715′ is slightly less than long dimensions of the slots 425, 425′ (
Referring to
A magnetic vehicle rack 100 is typically placed on a non-planar vehicle surface (e.g., roof) 805 and laterally aligned with respect to a long dimension of the vehicle 800. The one or more permanent magnet(s) 35 are attracted to the ferromagnetic construction of the vehicle's roof 805 causing the magnetic vehicle rack 100 to conform to the contour of the vehicle's roof 805. The user may adjust the position of the magnetic vehicle rack 100 by sequentially lifting a section(s) of the magnetic vehicle rack 100 and repositioning as is necessary to allow the magnetic vehicle rack 100 to conform to the contour of the vehicle's roof 805.
Once the magnetic vehicle rack 100 is properly positioned, the incurvate spine 15 (
The elongated payload (surfboard 810) is then placed upon the magnetic vehicle racks 100 and anchored thereto with the restraints 305, 305′ and attachment means 310, 310′. The procedure is easily reversed to remove the magnetic vehicle racks 100 from the vehicle's roof 805. It is important to note that the magnetic vehicle racks 100 cannot be easily removed from the vehicle's roof 805 until the incurvate spine(s) 15 are removed from the elongated body(s) 5 of the vehicle racks 100. Once the incurvate spine(s) 15 are removed, the deformable polymeric material from which the magnetic vehicle racks 100 are constructed provides sufficient flexibility to sequentially remove each section containing a permanent magnet 35 from the vehicle's roof 805. In embodiments where a unitary permanent magnet is employed, the elongated body 5 may be successively pulled away from the surface of the vehicle 800 until removal is completed.
The various exemplary inventive embodiments described herein are intended to be merely illustrative of the principles underlying the inventive concept. It is therefore contemplated that various modifications of the disclosed embodiments will without departing from the inventive spirit and scope be apparent to persons of ordinary skill in the art. They are not intended to limit the various exemplary inventive embodiments to any precise form described. In particular, it is contemplated that the magnetic vehicle rack may be constructed from any suitable material with different dimensions and/or cross-sectional profiles. No specific limitation is intended to a particular construction material(s), assembly order, shape or sequence described. Other variations and inventive embodiments are possible in light of the above teachings, and it is not intended that the inventive scope be limited by this specification, but rather by the Claims following herein.
This application is a continuation in part of co-pending U.S. patent application Ser. No. 12/794,726 filed Jun. 5, 2010 to the instant inventor. The instant application takes priority from co-pending patent application Ser. No. 12/794,726 and is hereby incorporated by reference as if fully set forth herein.
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Number | Date | Country | |
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20110297713 A1 | Dec 2011 | US |
Number | Date | Country | |
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Parent | 12794726 | Jun 2010 | US |
Child | 13113056 | US |