An end unit (100) for a conveyor (1000) for use in a stage assembly comprises a first frame (110) installable in the stage assembly and a second frame (120). The second frame (120) comprises a rotatable body (130) for supporting a conveyor belt (300), and is arranged to pivot with respect to the first frame (110), so as to open in a direction transverse to a direction of motion of the conveyor belt (300). An intermediate unit (200) for a conveyor (1000) for use in a stage assembly is configured to be disposed between a pair of end units (100), and comprises a first frame (210) installable in the stage assembly and a second frame (220) comprising a support surface (223) for supporting a conveyor belt (300). The second frame (220) is pivotally attached to the first frame (210), so as to open in a direction transverse to a direction of motion of the conveyor belt (300). A conveyor (1000) comprises a pair of end units (100), and optionally one or more of the intermediate units (200).

An end unit (100) for a conveyor (1000) for use in a stage assembly comprises a first frame (110) installable in the stage assembly and a second frame (120). The second frame (120) comprises a rotatable body (130) for supporting a conveyor belt (300), and is arranged to pivot with respect to the first frame (110), so as to open in a direction transverse to a direction of motion of the conveyor belt (300). An intermediate unit (200) for a conveyor (1000) for use in a stage assembly is configured to be disposed between a pair of end units (100), and comprises a first frame (210) installable in the stage assembly and a second frame (220) comprising a support surface (223) for supporting a conveyor belt (300). The second frame (220) is pivotally attached to the first frame (210), so as to open in a direction transverse to a direction of motion of the conveyor belt (300). A conveyor (1000) comprises a pair of end units (100), and optionally one or more of the intermediate units (200).

A spherical screen module unit includes a sector base including a sector carrier having an inner and outer arc edges; arc length of the outer arc edge is greater than that of the inner arc edge. An inner ramp frame is on the sector carrier and closer to the inner arc edge; an outer ramp frame is on the sector carrier and closer to the outer arc edge. When the spherical screen module unit is on a spherical screen assembling surface, minimum distance between the inner ramp frame upper surface and the spherical screen assembling surface is first height; maximum distance between the outer ramp frame upper surface and the spherical screen assembling surface is second height which is greater than the first height. A spherical screen structure including spherical screen module unit facilitates the module unit disassembly for repair, maintenance, or angle adjustment, and increases applicability in different environments.

A spherical screen module unit includes a sector base including a sector carrier having an inner and outer arc edges; arc length of the outer arc edge is greater than that of the inner arc edge. An inner ramp frame is on the sector carrier and closer to the inner arc edge; an outer ramp frame is on the sector carrier and closer to the outer arc edge. When the spherical screen module unit is on a spherical screen assembling surface, minimum distance between the inner ramp frame upper surface and the spherical screen assembling surface is first height; maximum distance between the outer ramp frame upper surface and the spherical screen assembling surface is second height which is greater than the first height. A spherical screen structure including spherical screen module unit facilitates the module unit disassembly for repair, maintenance, or angle adjustment, and increases applicability in different environments.

A portable stage includes a folding framework supporting a removable deck. The framework includes opposing folding end framework assemblies and opposed side framework assemblies. The framework folds from an extended position for use and a folded positon wherein the framework is compact for storage. The side framework assemblies each include corner columns connected by angled portions having a V configuration forming an open space below the deck. The decks connect with pin connectors that extend into through holes in the deck. The pin connectors having a threaded connector supporting a pin that provides for relative axial movement when the pin is rotated from above to adjust stage height. Removable guardrails include mounting brackets that attach to the pin connectors.

A portable stage includes a folding framework supporting a removable deck. The framework includes opposing folding end framework assemblies and opposed side framework assemblies. The framework folds from an extended position for use and a folded positon wherein the framework is compact for storage. The side framework assemblies each include corner columns connected by angled portions having a V configuration forming an open space below the deck. The decks connect with pin connectors that extend into through holes in the deck. The pin connectors having a threaded connector supporting a pin that provides for relative axial movement when the pin is rotated from above to adjust stage height. Removable guardrails include mounting brackets that attach to the pin connectors.

A collapsible mobile stage may be folded into a configuration and the shape of a trailer that may be hauled by a truck. The collapsible mobile stage includes an elevated framework supported by telescoping columns. The elevated framework may be used to support lighting, audio and visual systems. The mobile stage also provides seating for an audience on either side of a central stage supported by a platform. The platform includes a central segment between two opposing lateral segments. The lateral segments may be folded up to form the sides of a trailer while the central segment forms the bottom of the trailer. Audience seating sections may be folded over the platform segments to create the roof of the trailer. Audience seating as well as the elevated framework may be stored within the trailer or within a secondary trailer.

A collapsible mobile stage may be folded into a configuration and the shape of a trailer that may be hauled by a truck. The collapsible mobile stage includes an elevated framework supported by telescoping columns. The elevated framework may be used to support lighting, audio and visual systems. The mobile stage also provides seating for an audience on either side of a central stage supported by a platform. The platform includes a central segment between two opposing lateral segments. The lateral segments may be folded up to form the sides of a trailer while the central segment forms the bottom of the trailer. Audience seating sections may be folded over the platform segments to create the roof of the trailer. Audience seating as well as the elevated framework may be stored within the trailer or within a secondary trailer.

Systems, apparatuses, and methods are described which provide a portable ground blind stand. The portable ground blind stand can be used with a blind for hunting and/or observing, for example. The portable ground blind stand includes, for example, a case and a stand platform. The case is configured to carry other components of the portable ground blind stand when the portable ground blind is being stored or carried and is configured as a floor or floor covering attached to a stand platform when the portable ground blind is assembled. The portable ground blind stand can be stored in the case and is light enough to be carried by hand by a single person. The portable ground blind stand can be assembled without tools in some instances in a few minutes.

Systems, apparatuses, and methods are described which provide a portable ground blind stand. The portable ground blind stand can be used with a blind for hunting and/or observing, for example. The portable ground blind stand includes, for example, a case and a stand platform. The case is configured to carry other components of the portable ground blind stand when the portable ground blind is being stored or carried and is configured as a floor or floor covering attached to a stand platform when the portable ground blind is assembled. The portable ground blind stand can be stored in the case and is light enough to be carried by hand by a single person. The portable ground blind stand can be assembled without tools in some instances in a few minutes.