AUSTRALIA PATENTS ACT 1990 COMPLETE SPECIFICATION INNOVATION PATENT SLIDE-ON TRACK-MOUNTING SYSTEM The following statement is a full description of this invention including the best method of performing it known to me: SLIDE-ON TRACK-MOUNTING SYSTEM 5 TECHNICAL FIELD The present invention finds application where closures, such as doors, windows and the like are required to run over horizontally disposed portions of tracks or rails. 10 BACKGROUND Various types of warehouse and garage doors have lateral rollers that run on parallel, spaced, tracks. A door of the type in question is shown in US Patent No. 3424223, for example. The tracks include an upper, horizontal portion, that supports the rollers when the door is in its open position, and a vertical 15 portion that is used by the rollers when the door assumes its closed position. Intermediate, curved portions interconnect the horizontal and vertical portions of the rail. It will be realized that ceiling height varies from site to site so that for a 20 standard track, the distance from the position at which the horizontal track portion needs to be installed relative to the ceiling, will differ. Consequently, a problem that arises is that the garage door installer will very often have to improvise an ad-hoc, custom, track mounting bracket. In order to make the custom mounting bracket hacksaws, tin-snips, angle grinders and the like may 25 all have to be used, which is laborious and time consuming. Furthermore, the handmade brackets will vary in strength and appearance, which is undesirable. It will be realized that horizontal track alignment requires intricate installation 30 procedures to ensure optimal function. The installation and correct alignment of the horizontal tracks require five crucial aspects. The horizontal tracks must be: 1. at right angle with the door, 2. horizontal, 2 3. parallel with each other, 4. at the required distance and 5. mounted structurally sound. 5 Previously, in order to establish for the tracks to be at right-angle with the building opening, it was necessary to triangulate the tracks by comparing six different measurements and transferring the resulting alignment position via marking the ceiling. 10 In order to ensure that the tracks were parallel and the required distance between the horizontal tracks was established, it was furthermore necessary to individually measure the distance between the vertical tracks and to transfer this measurement via marking to the ceiling to establish the position of the track mount. 15 Applying these procedures is time consuming and cumbersome. It is an object of the present invention to address the problem identified above. 20 SUMMARY OF THE INVENTION According to one aspect of the present invention, there is provided a track mounting assembly for overhead door tracks, including: a ceiling bracket for fastening to a ceiling; 25 a height adjustment member to depend from the ceiling bracket; a track mounting bracket for fastening to the height adjustment member; wherein the distance between the ceiling bracket and the track mounting bracket can be selectively varied. 30 Preferably, at least one of the ceiling bracket, height adjustment member and track mounting bracket are formed with a series of holes for fasteners to facilitate the selective variation of the distance between the ceiling bracket and the track mounting bracket. 35 3 In a preferred embodiment, the series of holes of one of a set of components comprising the ceiling bracket, the height adjustment member and the track mounting bracket are equispaced at a distance d and a second series of holes is formed on one or more of the remaining components equispaced at a 5 distance (d+d/n) where n is an integer in order to facilitate the selective variation of the distance between the ceiling bracket and the track mounting bracket down to a distance d/n. According to further aspect of the present invention there is provided a height 10 adjustable stand including a track mounting bracket shaped to engage an overhead door track for supporting the overhead door track during installation. BRIEF DESCRIPTION OF THE DRAWINGS 15 Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Detailed Description will make 20 reference to a number of drawings as follows: Figure 1 is a perspective view of a track mounting assembly according to a preferred embodiment of the invention in use. Figure 1A is a front elevation of a track mounting bracket, being a 25 component of the track mounting assembly of Figure 1. Figure 1 B is a side elevation of the track mounting bracket. Figure 2 is a perspective view of a ceiling bracket, being a component of the track mounting assembly of Figure 1. Figure 3 is an exploded view of the track mounting assembly of Figure 1. 30 Figure 4 is a diagram illustrating variable adjustment afforded by differing spacing of holes on components of the track mounting assembly. Figure 5 is a perspective view of the track mounting assembly according to a further embodiment of the invention in use. Figure 6 is an exploded view of the track mounting assembly of Figure 5.
4 Figure 7 depicts telescopic, height-adjustable stands according to an embodiment of the invention. Figure 8 depicts the telescopic, height-adjustable stands in use. 5 DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS Referring now to Figure 1, there is depicted a mounting bracket, according to a preferred embodiment of the present invention, in use. The mounting bracket comprises a ceiling bracket 3 that is attached to a height adjustment 10 member 2, which in the preferred embodiment comprises a piece of L-profile steel. The height adjustment member is in turn attached to a track mounting bracket 1. The track mounting bracket 1 is shaped to receive the track 5, a portion of 15 which is shown. With reference to Figures 1A and 1B, the track mounting bracket is formed from a flat, rigid piece of metal plate 23 and includes a "J" formation cut out 21 shaped to complement the outside of the track. An anchoring hook 22 is provided that engages an outside upper lip of the track. The bracket can be slid along the track until a desired location on the track is 20 obtained. Mounting holes 24 are formed through plate 23 to assist with fastening to the height adjustment member 2. With reference to Figure 2, the ceiling bracket 3 is formed with an L-shaped profile so that it comprises a ceiling mounting strip 13 at right angles to a 25 height adjustment plate 15. Mounting holes 17 are formed through the track mounting strip 13. In use fasteners such as screws traverse the mounting holes 17 in order to attach the ceiling bracket 3 to an appropriate weight bearing ceiling structure, such as joist 4 (Figure 1). 30 Four mounting holes 19 are provided down the mid-line of the height adjustment plate 15 for fastening to the height adjustment member 2. The height adjustment member 2 is formed with a series of attachment holes equispaced a distance "d" (indicated as item 8 in Figure 2) so that the 5 distance between the track mounting bracket 1 and the ceiling bracket 3 can be varied as desired. With reference to Figure 3, the track mounting bracket 1 is formed with four 5 holes to facilitate mounting to height adjustment member 2. In order to offer a finer degree of height adjustment, the four holes are equi-spaced (d+d/2) apart (indicated as item 9), i.e. 1.5 times the pitch between the equi-spaced holes of the height adjustment member 2. Consequently, the position of the track mounting bracket 1, relative to the height adjustment member 2, can be 10 varied by either "d' or "d/2" as required and schematically illustrated in Figure 4. Similarly, two of the four mounting holes in the ceiling bracket 3 are spaced (d+d/4) apart (indicated by item 10 in Figure 3) to provide for fine height 15 adjustment down to a distance of 0.25 d when fastening through the holes in the height adjustment member 2. Referring now to Figure 5 and Figure 6, in some situations two parallel tracks 5 are required to be installed. In such a situation a variation of the track 20 mounting bracket is provided, shown as item 7 which is adapted to receive two tracks, one above the other. Figure 7 depicts a pair of height adjustable telescopic support stands 11 that are provided in order to temporarily engage with and support the horizontal 25 tracks 5 allowing for the door to be retracted in preparation of the track mount assembly installation. In Figure 7 dual track brackets 7 fastened at the top of each telescopic support stand 11. The stands are extended to the desired height, fastened and slid over the horizontal tracks 5. This track support allows for the door to be retracted and temporarily carry the weight of the 30 door. The retraction of the door automatically and simultaneously establishes tracks 5 parallel and square with the door, thereby providing the desired position for the track mount assembly to be installed. Figure 8 shows one of the stands 11 in use supporting a track 5 so that the 6 track bracket 1, height adjustment member 2 and ceiling bracket 3 can be readily adjusted, and fastened, in relation to joist 4. It will be realized that variations and further embodiments of the invention are 5 possible. For example, in the preferred embodiment height adjustment is provided by bolting through a series of fastening holes formed through the various components of the mounting bracket assembly. However, in some embodiments the adjustment may be provided by other means. For example, the various parts may be formed with complementary teeth that can be 10 interlocked when a desired level is reached. Furthermore, while the track mounting bracket 1 and the height adjustment member 2 have been described in the preferred embodiment as consisting of two pieces that are bolted together, they could instead be provided as a single 15 piece. In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or 20 described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted by those skilled in the art. 25 Throughout this specification, including the claims, where the context permits, the term "comprise" and variants thereof such as "comprises" or "comprising" are to be interpreted as including the stated integer or integers without necessarily excluding any other integers.