WO2004072394A2

WO2004072394A2 - Modular floor

Info

Publication number: WO2004072394A2
Application number: PCT/US2004/003689
Authority: WO
Inventors: Martin E. Thiede
Original assignee: Wenger Corporation
Priority date: 2003-02-07
Filing date: 2004-02-09
Publication date: 2004-08-26
Also published as: KR20050105456A; EP1595039A2; US20040211137A1; MXPA05008402A; JP2006526717A; US7874115B2; WO2004072394A3; CA2534829A1

Abstract

A modular floor including a pair of main beams (20), at least one cross beam (22) and a floor panel (24). The pair of main beams (20) each has an attachment structure (50). The attachment structure (50) includes a first support section (52), a second support section (54) and a channel (56) that extends between the first (52) and second (54) support sections. The first and second support sections have a convex upper surface. The at least one cross beam (22) engages the main beams (20) to retain the main beams in a stationary position with respect to each other. The floor panel (24) has ends that each have a recess that is shaped complementary to the upper surfaces of the first and second sections.

Description

MODULAR FLOOR

FIELD OF THE INVENTION

The present invention relates generally to a modular floor. More particularly, the present invention relates to a modular floor for use with a tent.

BACKGROUND OF THE INVENTION

In many situations, it is desirable to construct a floor for temporary use. The floor must be easy to assemble and disassemble and must be sufficiently strong to support weights placed thereon.

Modular flooring systems are disclosed in Taipale et al., U.S. Patent Nos. 5,848,501 and 6,106,186, which are assigned to the assignee of the present application. The modular flooring system uses universal connector mechanisms for slidably interlocking the beams with the support posts. Another modular flooring system is disclosed in Thiede, U.S. Patent

No. 6,581,339, which is assigned to the assignee of the present application. This modular flooring system is particularly suited for filling an orchestra pit to thereby provide a floor that is approximately aligned with a stage that is adjacent to the modular floor. SUMMARY OF THE INVENTION

The present invention is a modular floor that generally includes main beams and cross beams that are attached together to form a grid. The modular floor also includes a plurality of floor panels that are attached to the grid.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a perspective view of a modular floor according to the present invention.

Fig. 2 is a side view of a main beam for use with the modular floor. Fig. 3 is a perspective view of a second end of the main beam with a locking mechanism in a locked position.

Fig. 4 is a perspective view of the second end of the main beam with the locking mechanism in an unlocked position.

Fig. 5 is a side view illustrating positioning the first and second ends of the main beams adj acent each other.

Fig. 6 is a side view illustrating moving the locking mechanism to the unlocked position so that the main beams can be attached to each other.

Fig. 7 is a side view of an attachment bracket for use with the modular floor. Fig. 8 is a front view of the attachment bracket.

Fig. 9 is a perspective view of a cross beam adjacent the attachment bracket, which is mounted to the main beam. Fig. 10 is a perspective view of the cross beam attached to the main beam.

Fig. 11 is an end view of an alternative configuration of the side beam.

Fig. 12 is a perspective view of an upper surface of the floor panel. Fig. 13 is a perspective view of a lower surface of the floor panel.

Fig. 14 is an exploded perspective view of support beams and an end beam of the floor panel.

Fig. 15 is a perspective view of the end beam for the floor panel.

Fig. 16 is a perspective view of a lock screw for use with the modular floor.

Fig. 17 is a perspective view of the lock screw attached to the floor panel.

Fig. 18 is a side view of an accessory bracket attached to the main beam. Fig. 19 is a front view of a stair attachment bracket mounted to the main beam with two of the accessory brackets.

Fig. 20 is a side view of a stair assembly attached to the modular floor using the stair attachment bracket.

Fig. 21 is a bottom view of the stair assembly attached to the modular floor using the stair attachment bracket.

Fig. 22 is a side view of an alternative configuration of the accessory bracket attached to the cross beam. Fig. 23 is a side view of a main beam stabilizer in a use configuration.

Fig. 24 is a side view of the main beam stabilizer in a storage configuration.

Fig. 25 is a side view of a side beam stabilizer in a use configuration. Fig. 26 is a side view of the side beam stabilizer in a storage configuration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The present invention is modular floor, as most clearly illustrated in Fig. 1. The modular floor 10 generally includes a main beam 20, a cross beam 22, and a floor panel 24. Depending upon the surface over which the modular floor 10 is used, the modular floor 10 may also include one or more legs 26 to change the elevation of the modular floor 10.

The modular floor 10 is designed to permit relatively quick installation of the modular floor 10 in a variety of applications such as in a tent or over a pool.

By using the concepts of the present invention, the modular floor 10 is a significant improvement of prior flooring systems. The modular floor 10 of the present invention also enables the floor panels 24 to be adjustably positioned with respect to main beams 20 to increase the flexibility of the modular floor 10. The main beam 20 has an elongated configuration with a first end 30, which is most clearly illustrated in Fig. 2, and a second end 32, which is most clearly illustrated in Figs. 3-4. To provide the main beam 20 with a desired degree of structural rigidity, the main beam preferably includes a top wall 40, a bottom wall 42, and a pair of side walls 44. The side walls 44 preferably extend below the bottom wall 42 to facilitate attachment of main beams 20 to each other, as is discussed in more detail below. The main beam 20 preferably includes two attachment structures 50 extending from the top wall 40. The attachment structures 50 are used for attaching the floor panels 24 to the main beams 20. Each of the attachment structures 50 includes a first section 52 and a second section 54, which are shaped substantially complimentary to each other. Upper surfaces of the first and second sections 52, 54 define a semicircular shape. Extending between the first and second sections 52, 54 is a channel 56. The walls of the channel 56 preferably have a threaded surface to facilitate attaching the floor panels 24 to the main beam 20 as is discussed in more detail below. Proximate the first end 30, the main beam 20 has a bolt 60 that extends between the side walls 44. A plastic sleeve 62 is preferably placed over the bolt 60.

Proximate the second end 32, the main beam 20 has a locking mechanism 70, which is adapted to engage the bolt 60 for attaching main beams 20 to each other. The locking mechanism 70 generally has a U-shaped configuration. Sides of the locking mechanism 70 have a recess 72 formed therein that is adapted to receive the bolt 60. The locking mechanism 70 also includes a locking tooth assembly 74. The locking tooth assembly 74 is pivotally mounted to the locking mechanism 70 and is biased to a locking position. When in the locking position, the locking tooth assembly 74 substantially closes the recess 72 to retain the bolt 60 in the recess 72. The locking tooth assembly 74 includes a handle portion 76, which facilitates moving the locking tooth assembly 74 from the locking position (illustrated in Fig 3) to the unlocking position (illustrated in Fig. 4).

When attaching the main beams 20 together, the main beams 20 are positioned so that the first end 30 of one main beam 20 is adjacent the second end 32 of another main beam 20, as illustrated in Fig. 5. The first end 30 is lowered to the height of the second end 32 while the handle portion 76 is depressed to move the locking tooth assembly 74 to the unlocking position, as illustrated in Fig. 6.

The cross beam 22 is attached to the main beam 20 using an attachment bracket 78 that is illustrated in Figs. 7-8. The attachment bracket 78 includes a pair of side walls 80 that extend between a lower wall 84 and an upper wall

86. A post 82 extends between the side walls 80.

The attachment bracket 78 includes an upper tooth 90 and a lower tooth 92. The upper tooth 90 and the lower tooth 92 are adapted to engage extensions 94 on the side walls 44. To prevent the attachment bracket 78 from moving with respect to the main beam 20, a plate 96 is attached to the lower wall 84 with a bolt (not shown). The plate 96 extends under the bottom wall 42. The cross beam 22 includes a main section 100 and an end section 102 that is mounted to an end of the main section 100, as illustrated in Figs. 9 and 10. The end section 102 has a pair of side walls 104. Each of the side walls 104 has a hook 106 extending therefrom. The hook 106 extends over the post 82. A screw 110 is preferably extended through the side walls 80 and the side walls 104 to maintain the cross beam 22 in a stationary position with respect to the main beam 20.

Using main beams 20 with two attachment structures 50 enables adjacent floor panels 24 to be mounted to the main beams 20. Along sides of the modular floor a side beam 120 is preferably used. The side beam 120 preferably only includes a single attachment structure 50, as illustrated in Fig. 11.

The side beam 120 illustrates an alternative configuration that only includes a top wall 122 and a pair of side walls 124. To strengthen the side beam 120, the wooden piece 126 is placed in a recess defined by the top wall 122 and the pair of side walls 124.

A person of ordinary skill in the art will appreciate that it is also possible to use the concepts of the present invention with other support structures such as a wooden composite structure that has an I-beam configuration with a top plate, a bottom plate and a center section that extends between the top plate and the bottom plate. Such a support structure would enable the modular floor to be used over larger structures such as over a pool. The floor panel 24 preferably has a generally rectangular configuration as illustrated in Figs. 12-13. A preferred size for the floor panel 24 is about 4 feet wide and about 8 feet long as forming the floor panel 24 with these dimensions enables the floor panel 24 to be manually carried. A person of ordinary skill in the art will appreciate that the concepts of the present invention may be adapted for use with different configurations and sizes of the floor panels 24.

The floor panel 24 generally includes a sheathing layer 130 and a support frame 132 to which the sheathing layer is attached. The sheathing layer 130 may be conventional plywood or it may have a finished upper surface such as with carpet or tile.

The support frame 132 preferably includes a pair of end beams, 134 and a plurality of support beams 136 that extend between the end beams 134. The number of support beams 136 and the shape of the support beams 136 is selected based upon the desired capacity of the modular floor 10. The support beams 136 preferably have a top wall 140, a bottom wall

142 and a pair of side walls 144 that extend between the top wall 140 and the bottom wall 142, as illustrated in Fig. 14. The top wall 140 preferably extends beyond the side walls 144 to facilitate attachment of the support beams 136 to the sheathing layer 130. The end beams 134 preferably have an end track 150 and a plurality of adaptors 152 that engage the support beams 136, as illustrated in Fig. 15. The end track 150 preferably has a C-shaped configuration, which defines a recess 154. The recess 154 is adapted to receive a first section 156 on the adapters 152. The adapters

152 are retained in the end track 150 while being laterally slidable with respect to the end track 150 to adjust be position of the adapters 152.

Adjacent the first section 156, the adapters 152 have a second section 158. The second section 158 has a concave shape, which preferably conforms to the attachment structures 50. The second section 158 thereby facilitates sliding the floor panels 24 laterally along the attachment structures 50.

Opposite the first section 156 and the second section 158, the adapters

152 include an extension 160 that is sized to slide into a recess defined by the top wall 140, the bottom walls 142 and the side walls 144 for attachment of the end beams 134 to the support beams 136.

The floor panels 24 are preferably attached to the side beams 20 with a lock screw 170, as most clearly illustrated in Fig. 16. The lock screw 170 generally includes a shaft 172, a housing 174 and a spring 176. The shaft 172 has a first end 180 and a second end 182. The first end

180 preferably has a hex shaped recess (not shown) formed therein to facilitate utilizing the lock screw 170 with a conventional Allen wrench. The second end 182 has a tlireaded surface, which enables the lock screw 170 to engage the threaded surface in the channel 56. The housing 174 extends around the shaft 172 and facilitates retaining the lock screw 170 in a stationary position with respect to the end beam 134 similar to the adapter 152, as illustrated in Fig. 17. By attaching the lock screw 170 to the end beam 134, it is less likely that the lock screw 170 will be misplaced.

The spring 176 biases the shaft 172 into a retracted position with respect to the housing 174 so that the shaft 172 does not interfere with sliding of the floor panels 24 with respect to the side beams 20 for assembly of the modular floor

10.

The modular floor 10 of the present invention also includes the ability to attach accessories along the sides of the modular floor 10. The accessories are preferably attached to either the main beam 20 or the cross beam 22 with an accessory attachment 180.

The accessory attachment 180 generally has a plate configuration, as illustrated in Fig. 18. The accessory attacliment 180 includes a first plurality of apertures 182 and a second plurality of apertures (not shown). The first plurality of apertures 182 are used for attaching the accessory attachment 180 to the main beam 20 or cross beam 22 using clips 186.

The second plurality of apertures 184 are used for attaching an accessory mounting bracket 190 to the accessory attachment 180. The accessory mounting bracket 190 includes an extension 192 that is adapted to receive a portion of the accessory. The accessory attachments 180 are preferably mounted in a spaced- apart relationship on the main beam 20, as illustrated in Fig. 19.

The accessory 194 such as a set of stairs, as illustrated in Fig. 20, are placed over the accessory mounting bracket 190. An end of the accessory mounting bracket 190 preferably includes a lip 196, as illustrated in Fig. 21, to retain the accessory 194 on the accessory mounting bracket 190.

An alternative configuration of the accessory 194 includes a vertically oriented post that is attached to the accessory attachment 180. The vertically oriented post is preferably used in conjunction with a railing assembly (not shown).

Depending on the height of the modular floor 10, it may be desirable to use a main beam stabilizer 200 or a cross beam stabilizer 202, as illustrated in Figs. 23-26, to further enhance the stability of the modular floor 10.

The main beam stabilizer 200 is pivotable between a use configuration (Fig. 23) and a storage configuration (Fig. 24). When in the use configuration, the main beam stabilizer 200 is attached to both the main beam 20 and the leg 26. When in the storage configuration, the main beam stabilizer 200 is substantially recessed within a lower surface of the main beam 20. Preferably a clip 204 that is used to attach the main beam stabilizer 200 to the legs 26 is also used to retain the main beam stabilizer 200 in the storage configuration.

Similarly, the cross beam stabilizer 202 is pivotable between a use configuration (Fig. 25) and a storage configuration (Fig. 26). When in the use configuration, the cross beam stabilizer 202 is attached to both the cross beam 22 and the leg 26. When in the storage configuration, the cross beam stabilizer 202 is substantially aligned with the cross beam 22 with both ends of the cross beam stabilizer 202 being attached to the cross beam 22 with screws. Each of the cross beam stabilizer 202 preferably includes an array of apertures 210. Using the array of apertures 210 facilitates aligning one of the apertures with an aperture on the cross beam 22 or the leg 26.

Unless otherwise noted, the components of the modular floor 10 are preferably fabricated from extruded aluminum to provide the modular floor 10 with a relatively low weight. However, a person of ordinary skill in the art will appreciate that it is possible to fabricate the modular floor 10 from other materials using the concepts of the present invention.

In operation, the main beams 20 are placed so that the first end 30 is adjacent the second end 32. The main beams 20 are attached to each other by engaging the bolt 60 with the locking mechanism 70. This process is repeated until a desired length is obtained. Additional main beams 20 are prepared in a similar manner.

Main beams are then attached together using the cross beam 22 by extending the hooks 92 over the post 82. The bolt 94 is then extended through the side attachment walls 80 and the side walls 90. This process is repeated as needed to thereby form a grid.

Next, the floor panels 24 are placed on the grid so that the second sections 158 seat on the attachment structures 50. The floor panels 24 are attached to the grid by screwing the locking screw 170 until the second end 182 engages the threaded surface on the channel 56.

It is contemplated that features disclosed in this application, as well as those described in the above applications incorporated by reference, can be mixed and matched to suit particular circumstances. Various other modifications and changes will be apparent to those of ordinary skill.

Claims

1. A modular floor comprising: at least two main beams each having an attachment structure, wherein the attachment structure comprises a first support section, a second support section and a channel that extends between the first and second support sections; at least one cross beam engaging the main beams to retain the main beams in a substantially stationary position with respect to each other; and a floor panel having ends, wherein each of the ends have a recess that is shaped substantially complementary to at least a portion of upper surfaces of the first and second sections.

2. The modular floor of claim 1, wherein the first and second support sections define a convex upper surface.

3. The modular floor of claim 1, wherein each of the main beams has a first end and a second end, wherein a bolt is attached to the main beam proximate the first end, and wherein the second end has a locking mechanism.

4. The modular floor of claim 3, wherein the locking mechanism comprises a recess that is adapted to receive the bolt and a locking tooth assembly, wherein the locking tooth assembly is movable between a locking position and an unlocking position, and wherein the bolt is retained in the recess when the locking tooth assembly is in the locking position.

5. The modular floor of claim 1, wherein each of the main beams has at least one side wall that includes at least one extension, wherein the extension is adapted a portion of an attachment bracket, and wherein the cross beam attaches to the main beam with the attachment bracket.

6. The modular floor of claim 1, wherein each of the main beams includes a support attached to a lower surface thereof.

7. The modular floor of claim 1, wherein the cross beam includes a main section and end sections that are attached to opposite ends of the main section.

8. The modular floor of claim 1 , wherein the floor panel comprises : a floor board; floor end beams attached to a lower surface of the floor board proximate the ends; and a floor side beam extending between the floor ends beams.

9. The modular floor of claim 1, and further comprising a locking mechanism that releasably attaches the floor panel to one of the main beams.

10. The modular floor of claim 9, wherein the locking mechanism threadably engages sides of the channel.

11. The modular floor of claim 9, wherein the locking mechanism is operably attached to the floor panel so that the locking mechanism is operable from an upper surface of the floor panel.

12. The modular floor of claim 1, and further comprising at least one leg that extends from the main beam.

13. The modular floor of claim 12, and further comprising a main beam stabilizer that extends between the main beam and the at least one leg.

14. The modular floor of claim 12, and further comprising a cross beam stabilizer that extends between the cross beam and the at least one leg.

15. A method of assembling a modular floor comprising: providing at least two main beams, wherein each beam has an attachment structure, wherein the attachment structure comprises a first support section, a second support section and a channel that extends between the first and second support sections; attaching the at least two main beams with at least one cross beam to retain the main beams in a substantially stationary relationship with respect to each other; attaching a floor panel to upper surfaces of the first and second sections, wherein ends of the floor panel include recesses formed therein that are shaped substantially complimentary to the upper surfaces of the first and second sections.

16. The method of claim 15, wherein the first and second support sections define a convex upper surface.

17. The method of claim 15, wherein each of the main beams has a first end and a second end, wherein a bolt is attached to the main beam proximate the first end, and wherein the second end has a locking mechamsm.

18. The method of claim 17, and further comprising: providing a recess on the locking mechanism that is adapted to receive the bolt; mounting a locking tooth assembly on the locking mechanism that is movable between a locking position and an unlocking position; and retaining the bolt in the recess when the locking tooth assembly is in the locking position.

19. The method of claim 15, wherein each of the main beams has at least one side wall that includes at least one extension, wherein the cross beam is attached to the main beams with an attachment bracket that engages the at least one extension.

20. The method of claim 15, and further comprising attaching a support to a lower surface of the main beam.

21. The method of claim 15, wherein the cross beam includes a main section and end sections that are attached to opposite ends of the main section.

22. The method of claim 15, wherein the floor panel comprises a floor board, floor end beams attached to a lower surface of the floor board proximate the ends; and a floor side beam extending between the floor ends beams.

23. The method of claim 15, and further comprising attaching the floor panel to one of the main beams with a locking mechanism.

24. The method of claim 23, wherein the locking mechanism threadably engages sides of the channel.

25. The method of claim 23, wherein the locking mechanism is operably attached to the floor panel so that the locking mechanism is operable from an upper surface of the floor panel.

26. The method of claim 15, and further comprising attaching at least one leg to the main beam.

27. The method of claim 26, and further comprising attaching a main beam stabilizer to the main beam and the at least one leg.

28. The method of claim 26, and further comprising attaching a cross beam stabilizer to the cross beam and the at least one leg.