Abstract:
A lawn or yard tractor personal enclosure has a frame supported on the tractor, conveniently by attachment to a seat mounting position. The enclosure has a top frame, back supports and support members attaching the supports to the tractor. A flexible enclosure, for example of netting, fits over the frame and is contoured to suit the tractor. L-shaped brackets at the lower ends of the back supports include quick release mounts to releasably attach the enclosure to a tractor.

Description:
FIELD OF THE INVENTION 
     This invention relates to a protected personal enclosure for a yard tractor or the like. 
     BACKGROUND OF THE INVENTION 
     Current yard tractors and the like are open to the elements. At best they are equipped with a shade that provides some protection against the suns rays for the occupant of the tractor. Such a sun shade however does not provide any protection against air borne dust, pollen and other allergens, insects, and particles that may be kicked up by the tractor during yard cutting. There is therefore a need for protective enclosure which would protect the operator of the tractor against these air borne elements. There is also a need to provide a means to easily install and remove such an enclosure on a tractor, without requiring any modification, drilling or cutting or any of the tractor components. As well, attachment means should be able to mount the enclosure on virtually any lawn tractor. 
     SUMMARY OF THE INVENTION 
     An object of the invention is to provide an improved enclosure for a yard tractor or the like, to protect an operator from insects and other airborne objects. It is a further object to provide an enclosure which may be easily fastened to a variety of commercially available lawn tractors without drilling or other permanent modifications of the tractor. 
     In one aspect of the invention, a protective personal enclosure for a yard tractor or the like comprises an enclosure having a substantially rigid upper frame, a vertically oriented frame spacing the upper frame from the tractor, a protective material disposed over the upper frame and extending downwardly and means to secure the protective material to the tractor and/or the upper frame and/or the vertically oriented frame. 
     In another aspect, the vertically oriented frame includes means for releasably securing the enclosure to a tractor. The securing means comprises a hook means for engagement with a component of the tractor and a retractable fastening means for fastening the hook means to the lower frame of the enclosure. The hook means may be initially loosely engaged with a component of the tractor and then tightly fastened to the tractor component by retracting the hook means against the vertically oriented frame via the retraction means. In one version, the retraction means comprises a threaded rod fastened to the hook means and extending through an aperture within the vertically oriented frame. A nut or other internally threaded member on the threaded rod tightens the hook means against the frame. 
     Having thus generally described the invention, reference will now be made to the accompanying drawings illustrating the preferred embodiments. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is an isometric view of the protective enclosure of the present invention, with the tractor shown in dotted outline; 
     FIG. 2 is an isometric view of the frame for the protective cover of the present invention; 
     FIG. 3 is a perspective view showing the frame attachment to the tractor; 
     FIG. 4 is a side view showing the frame attachment to the tractor; 
     FIG. 5 is an isometric view of the frame showing FIG. 2, with a sun shield installed; 
     FIG. 6 is a perspective view of the enclosure, showing shaping for access to controls; 
     FIG. 7 is a perspective view of a portion of a frame, showing a retaining hook; 
     FIG. 8 shows the embodiment of FIG. 7, engaged to a lawn tractor fender. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring now to the drawings, the protective enclosure of the present invention and particularly to FIGS. 1 and 6, the enclosure includes a rectangular top panel  10  and four panels  12 ,  14 ,  16  and  18 , comprising front panel  12 , left panel  14 , right panel  16  and back panel  18 . The panels  12 ,  14 ,  16  and  18  together with the top panel  10 , define a rectangular box like enclosure having an open bottom. The panels of the enclosure can be made of netting or any other flexible material suitable for preventing the passage of air borne elements such as dust. A zippered opening  20  is included in the side left panel  18  corresponding to the driver&#39;s side of the tractor, for entry and exit of the driver. The front panel  12  is designed to contact the hood of the tractor and contains a cut-away portion  24  which is designed to fit the contour of the hood of the tractor. To the left of the cut-away portion as one faces the front panel is a slit  26  which is designed to allow the passage of the tractor&#39;s gear shift lever. The slit  26  can be closed by overlapping a slit panel  27  with the front panel  12 . The slit may be closed by suitable closure means. 
     In use the enclosure is disposed on a frame attached to the tractor. The frame is seen in dotted outline in FIG.  1  and also clear in FIG.  2 . The frame comprises a substantially rigid upper frame  30  in the form of a U-shaped element held above the tractor by two supports  32 . Supports  32  in turn are attached to the rear of the tractor seat. The upper frame  30  includes two spaced top sections  36  to extend forwardly from the upper ends of supports  32  and a cross member  38  joining the forward ends of the top sections  36 . 
     When disposed over the frame the enclosure&#39;s top panel rests on the upper frame while the side panels extend downwardly to the tractor. Securing means such as velcro is used to removably secure the enclosure netting  37  to the upper frame and as well to secure the bottom edges of the side panels to the tractor body. Other suitable securing means such as snaps can be used. The securing of the netting to both the upper frame and the tractor prevents the netting from being blown away from the body of the tractor thus exposing the operator to the elements. 
     FIGS. 3 and 4 illustrate one form of attachment of the enclosure frame to a tractor. Tractors usually have a pivoted or tip-up seat  40 , pivotally attached to the tractor frame by pivots  42 . The supports  32  are L-shaped with forward extending sections  44  having at their forward ends holes  46  (see FIG.  2 ). The pivots  42 , which may be bolts and nuts or pins with cotter pins for example, are unfastened and then repositioned to attach the forward ends of sections  44 , and the seat, to the tractor. With the seat pivoted back into position, and with the driver positioned on the seat  40 , the enclosure frame will be held firmly in position. The L-shaped supports also have upwardly extending sections  48  to which the lower ends of supports  32  are connected. 
     In another embodiment, seen in FIGS. 7 and 8, releasable retainer means are provided to fasten the frame to the tractor in a manner in which the frame may be easily released. In this version, the supports  32  are comprised of elongate generally vertical members, each of which is generally L-shaped and terminates at its lower end with a generally horizontally foot portion  60 . An aperture  62  extends through the foot  60 , the axis which is generally vertical. A broad hook  64 , formed from a metal plate having a generally fish hook shaped profile, is provided, with a threaded rod  66  extending from the upper region from the hook  64 . The threaded rod  66  extends through the aperture  62 , and is engaged to a corresponding support  32  by ways of a wing nut  70  or other internally threaded member. Tightening of the nut  70  draws the hook upwardly against the frame. The hook is preferably coated with a plastic or other like protective coating, both to prevent rusting and to minimize scratching or damage to the tractor. In use, the hook may be tightened against a convenient part of the tractor, such as the rear fender or wheel cowling. The nut  70  is then tightened sufficiently to firmly fasten the frame to the tractor. 
     The hook fastening means shown in FIG. 7, may also be used in combination with fastening means shown in FIGS. 3 and 4. This provides a enclosure frame which is capable being fastened either to a tractor having specific modifications to receive the enclosure frame, or to a tractor having no such modifications. 
     In addition to the enclosure, a sun shade can also be fitted. This is illustrated in FIG.  5 . The sun shade  50  fits over the upper part of the upper frame, resting on the sections  36  and  38 . The sun shade, if provided, is positioned over the frame before adding the enclosure comprising panels  10 ,  12 ,  14 ,  16  and  18 . 
     In the example illustrated in the drawings, the sections  34  fit into the supports  32 , as for example a sliding fit. While the rest of the frame is shown as an unitary member, it can be formed on separate sections which join together, as by sliding joints. For example the sections  36  can be attached to sections  34  by sliding joints at comers  52 . Similarly the sections  38  can be joined to the sections  36 . Also the supports  32  can be in more than one piece, for convenience in packing. 
     The enclosure can be supplied as a complete frame ready for attachment to a tractor, the flexible material then applied over the frame. As an alternative the frame for the enclosure can be in the form of separate sections or members adapted to be joined together prior to attachment to a tractor, by, for example, a purchaser. In such case the disassembled enclosure, with the flexible material, can be supplied in a container. A sun shield can be included or supplied as a separate item. The sections or members can be joined by interengaging sliding joints, or by any other convenient method.