초록 ▼

A stable extendable apparatus is provided which includes top, bottom, front and rear structures coupled together. The top and bottom structures each include at least one extendable member which defines a minimum length in a longitudinal retracted position and a maximum length in a longitudinal exten

A stable extendable apparatus is provided which includes top, bottom, front and rear structures coupled together. The top and bottom structures each include at least one extendable member which defines a minimum length in a longitudinal retracted position and a maximum length in a longitudinal extended position. The front and rear structures each includes a first side support, a second side support, and an extendable cross-support to couple the first and second side supports together. Extension or retraction of the extendable cross-support changes an angle of orientation of the first side support relative to the second side support. The first rear side support, the second rear side support, and the extendable rear cross-support correspond to positions of the respective front supports.

대표청구항 ▼

1. An extendible and collapsible apparatus that supports attachable components, the apparatus comprising: a top structure including at least one extendable top member, the extendable top member defining a minimum length of the apparatus in a longitudinal retracted position and a maximum length of th

1. An extendible and collapsible apparatus that supports attachable components, the apparatus comprising: a top structure including at least one extendable top member, the extendable top member defining a minimum length of the apparatus in a longitudinal retracted position and a maximum length of the apparatus in a longitudinal extended position;a front structure coupled to the top structure, the front structure including a first front side support,a second front side support, andan extendable front cross-support to couple the first and second side supports together, the extendable cross-support defining a minimum width of the apparatus in a lateral retracted position and a maximum width of the apparatus in a lateral extended position, wherein extension or retraction of the extendable front cross-support changes an angle of orientation of the first front side support relative to the second front side support;a bottom structure coupled to the front structure and opposed to the top structure, the bottom structure including at least one extendable bottom member, the extendable bottom member to correspond in length with the extendable top member; anda rear structure coupled to the top structure and bottom structure, the rear structure including a first rear side support,a second rear side support, andan extendable rear cross-support to couple the first and second rear side supports together, wherein extension or retraction of the extendable rear cross-support changes an angle of orientation of the first rear side support relative to the second rear side support, wherein the first rear side support, the second rear side support, and the extendable rear cross-support correspond to positions of the first front side support, second front side support, and extendable front cross-support, respectively. 2. The apparatus according to claim 1, further comprising a support arm attachable to the top structure and the bottom structure, wherein the support arm provides secondary support to the apparatus. 3. The apparatus according to claim 2, wherein the support arm includes a plunger spring system to attach the support arm to the top and bottom structures. 4. The apparatus according to claim 2, wherein the support arm comprises a plurality of mounting holes to receive a bracket. 5. The apparatus according to claim 1, wherein the first front side support, the second front side support, the first rear side support, and the second rear side support comprise a plurality of mounting holes to receive a respective amount of brackets. 6. The apparatus according to claim 5, further comprising a locking device that attaches a bracket to the first front side support, the second front side support, the first rear side support, or the second rear side support. 7. The apparatus according to claim 1, wherein the bottom structure includes at least one moving device to enable movement of the apparatus. 8. The apparatus according to claim 1, wherein the extendable front cross-support, extendable rear cross-support, extendable top member, and extendable bottom member each comprise a first tubing, anda second tubing, wherein the first tubing is insertable into a second tubing. 9. The apparatus according to claim 8, wherein the first and second tubing have different cross sections or diameters. 10. The apparatus according to claim 8, wherein the extendable front cross-support, extendable rear cross-support, extendable top member, and extendable bottom member each further comprise a locking device to lock and unlock the first tubing to the second tubing. 11. The apparatus according to claim 10, wherein the locking device comprises a quick-release pin. 12. The apparatus according to claim 1, wherein the apparatus comprises a stand or an A-Frame cart. 13. An extendible and collapsible apparatus that supports attachable components, the apparatus comprising: an extendable top structure defining a minimum length of the apparatus in a longitudinal retracted position and a maximum length of the apparatus in a longitudinal extended position;a front structure coupled to the top structure, the front structure including an extendable front cross-support defining a minimum width of the apparatus in a lateral retracted position and a maximum width of the apparatus in a lateral extended position, wherein extension or retraction of the extendable front cross-support changes an angle of orientation of one or more side supports;an extendable bottom structure coupled to the front structure, the extendable bottom structure to correspond in length with the extendable top structure; anda rear structure coupled to the top structure and bottom structure, the rear structure including an extendable rear cross-support that corresponds to the position of the extendable front cross-support.