A data structure embodied on a computer-readable medium is disclosed. The data structure may include database schema such as a structured query language (SQL) database. The database schema may include a tiered reward schema that cooperates with a competition schema to reward contestants based on their status in the tiered reward schema. The tiered reward schema may encourage contestants that introduce and promote new songs and artist via their virtual or digital record label.

A packaging system having an outboard guard and an outboard retainer cap. The outboard guard includes an outboard guard opening having a hole through the planform of the outboard guard, an engagement portion having an annular surface radially surrounding the outboard guard opening, an outboard bearing protector portion having an annular surface radially surrounding the engagement portion of the outboard guard, and an outer rim having an annular surface radially surrounding the outboard bearing protector portion. The outboard retainer cap is configured to be removably affixed to the outboard guard and includes an outboard alignment protrusion having a circular surface, an engagement portion having an annular surface radially surrounding the outboard alignment protrusion, and a retaining flange having an annular surface radially surrounding the engagement portion of the outboard retainer cap.

A packaging system having an outboard guard and an outboard retainer cap. The outboard guard includes an outboard guard opening having a hole through the planform of the outboard guard, an engagement portion having an annular surface radially surrounding the outboard guard opening, an outboard bearing protector portion having an annular surface radially surrounding the engagement portion of the outboard guard, and an outer rim having an annular surface radially surrounding the outboard bearing protector portion. The outboard retainer cap is configured to be removably affixed to the outboard guard and includes an outboard alignment protrusion having a circular surface, an engagement portion having an annular surface radially surrounding the outboard alignment protrusion, and a retaining flange having an annular surface radially surrounding the engagement portion of the outboard retainer cap.

A packaging system having an outboard guard and an outboard retainer cap. The outboard guard includes an outboard guard opening having a hole through the planform of the outboard guard, an engagement portion having an annular surface radially surrounding the outboard guard opening, an outboard bearing protector portion having an annular surface radially surrounding the engagement portion of the outboard guard, and an outer rim having an annular surface radially surrounding the outboard bearing protector portion. The outboard retainer cap is configured to be removably affixed to the outboard guard and includes an outboard alignment protrusion having a circular surface, an engagement portion having an annular surface radially surrounding the outboard alignment protrusion, and a retaining flange having an annular surface radially surrounding the engagement portion of the outboard retainer cap.

A packaging system having an outboard guard and an outboard retainer cap. The outboard guard includes an outboard guard opening having a hole through the planform of the outboard guard, an engagement portion having an annular surface radially surrounding the outboard guard opening, an outboard bearing protector portion having an annular surface radially surrounding the engagement portion of the outboard guard, and an outer rim having an annular surface radially surrounding the outboard bearing protector portion. The outboard retainer cap is configured to be removably affixed to the outboard guard and includes an outboard alignment protrusion having a circular surface, an engagement portion having an annular surface radially surrounding the outboard alignment protrusion, and a retaining flange having an annular surface radially surrounding the engagement portion of the outboard retainer cap.

The invention generally involves a button display system and button display apparatus for storing, organizing, and facilitating a display of at least one button. The button display system comprises a storage container and an apparatus that is exemplarily, although not necessarily modular. The modular device may be a modular rack assembly removably coupled to an interior of the storage container. The modular rack assembly may include a plurality of modular rack trays, each of the plurality of modular rack trays including a plurality of slits configured to receive a portion of a button positioned in a slanted orientation. The button display system enables systematic organization of at least one, but usually several buttons, effectively storing, preserving, and facilitating their display.

The invention generally involves a button display system and button display apparatus for storing, organizing, and facilitating a display of at least one button. The button display system comprises a storage container and an apparatus that is exemplarily, although not necessarily modular. The modular device may be a modular rack assembly removably coupled to an interior of the storage container. The modular rack assembly may include a plurality of modular rack trays, each of the plurality of modular rack trays including a plurality of slits configured to receive a portion of a button positioned in a slanted orientation. The button display system enables systematic organization of at least one, but usually several buttons, effectively storing, preserving, and facilitating their display.

A stackable sawblade containment assembly comprises a plurality of annular covers and an outer lip. The plurality of annular covers is defined by an outer perimeter, wherein each of the annular cover comprises a containment face and a base face, wherein at least one protrusion and at least one depression are coupled to the annular cover. The outer lip is disposed to extend along the outer perimeter and extending from the containment face. The at least one protrusion is disposed in general alignment with the at least one depression, whereby the at least one protrusion is configured to form a snap-fit relationship with the at least one depression. The containment face from one of the plurality of annular covers, and the base face from another one of the plurality of annular covers are detachably connected, forming an inner cavity and a stacked arrangement of annular covers.

A stackable sawblade containment assembly comprises a plurality of annular covers and an outer lip. The plurality of annular covers is defined by an outer perimeter, wherein each of the annular cover comprises a containment face and a base face, wherein at least one protrusion and at least one depression are coupled to the annular cover. The outer lip is disposed to extend along the outer perimeter and extending from the containment face. The at least one protrusion is disposed in general alignment with the at least one depression, whereby the at least one protrusion is configured to form a snap-fit relationship with the at least one depression. The containment face from one of the plurality of annular covers, and the base face from another one of the plurality of annular covers are detachably connected, forming an inner cavity and a stacked arrangement of annular covers.

A battery packaging body allows, while infants can hardly take out a battery, a person other than infants can take out the battery. A battery packaging body includes a mount, and a blister cover which can accommodate a battery between the same and the mount. The mount and the blister cover are fixed to each other at least at their peripheral edge parts. The blister cover has a non-fixed part which is, at a position continuous to an accommodating projection, not fixed to the mount, and a first rib part provided along the accommodating projection. The non-fixed part is positioned on the opposite side to the first rib part across the accommodating projection and constitutes a part of a cuttable region P. The first rib part extends in a direction crossing a direction in which the non-fixed part, the accommodating projection and the first rib part line up.