Rotary units, rotary mechanisms, and related applications

A rotary mechanism, comprising:

• at least a first rotational component comprising at least a first gear component, which first rotational component comprises or is configured to receive at least a first drive mechanism component, wherein the first drive mechanism component and/or the first rotational component is configured to receive at least a second drive mechanism component;
• at least a second rotational component comprising at least a second gear component, which second rotational component is configured to receive at least a portion of the first drive mechanism component of the first rotational component;
• and,
• at least a third gear component that operably engages the first gear component of the first rotational component and the second gear component of the second rotational component such that when the first rotational component rotates in a first direction, the third gear component and the second rotational component rotate in a second direction,
• wherein at least one other component is configured to receive at least a portion of the first drive mechanism component of the first rotational component.

A rotary unit, comprising:

• at least one rotational component comprising at least first and second sides that substantially oppose one another and at least one drive mechanism component receiving area that is configured to receive at least one drive mechanism component, wherein at least a first gear component is substantially coaxially and substantially fixedly positioned proximal to an inner region of the first side, wherein at least a second gear component is substantially coaxially and substantially fixedly positioned proximal to an outer region of the second side, wherein the second gear component defines at least a portion of at least one gear structure receiving area, wherein the gear structure receiving area is configured to receive one or more gear structures or components thereof, and wherein at least one surface of the rotational component comprises at least one implement;
• at least one gear structure comprising at least one support component and at least a third gear component rotatably coupled to the support component, wherein the gear structure is at least partially disposed within the gear structure receiving area, wherein the gear structure is configured to rotate relative to the rotational component, wherein the third gear component is configured to operably engage the second gear component such that when the third gear component rotates in a first direction the rotational component rotates in the first direction, and wherein the first gear component is configured to operably engage the third gear component of at least one other rotary unit when the first gear component is disposed proximal to the other rotary unit such that when the first gear component rotates in the first direction the rotational component of the other rotary unit rotates in a second direction that is substantially opposite from the first direction;
• and,
• at least one retaining mechanism that is configured to retain the gear structure at least partially within the gear structure receiving area.

A rotary unit, comprising:

• at least one rotational component comprising at least first and second gear components and at least one gear structure receiving area, wherein the first gear component substantially fixedly extends from a first surface of the rotational component, wherein the second gear component substantially fixedly extends from a second surface of the rotational component, wherein the first and second surfaces substantially oppose one another, wherein the second gear component communicates with the gear structure receiving area, wherein the gear structure receiving area is configured to receive one or more gear structures or components thereof, and wherein at least one surface of the rotational component comprises at least one implement;
• and,
• at least one gear structure comprising at least one support component and at least a third gear component rotatably coupled to the support component, wherein the gear structure and/or the rotational component comprises at least one retaining mechanism or a portion thereof that is configured to retain the gear structure proximal to the first surface of the rotational component, wherein the gear structure or a component thereof is configured to rotate relative to the rotational component, wherein the first gear component is configured to operably engage the third gear component, and wherein the third gear component is configured to operably engage one or more other gear components when the third gear component is disposed proximal to the other gear components.