Gear Mechanism Design Expert Needed

I need a mechanical designer with proven experience in developing gear mechanisms. Your task will be to design a gear system that allows a rotating ring to perform two distinct mechanical actions through a single movement.

Requirements:
- Design a gear mechanism
- Plastic as the required material
- Knowledge of final application context is not necessary

Ideal Skills & Experience:
- Expertise in various gear types (spur, bevel, worm)
- Proficient in plastic design and applications
- Strong mechanical design background

Please provide a portfolio showcasing relevant projects.