External Closure Systems Overview

This document describes a basic and cost-effective external closure system known as the "Tap Up" system. It primarily consists of three components: a pulley, a strap, and a roller, which is typically enclosed within a housing.

System Components and Functionality

• Pulley: Facilitates the movement and adjustment of the strap.
• Strap: The main element used to secure or close the external structure.
• Roller: Usually housed, it allows smooth operation of the strap and pulley mechanism.

Design Illustration

The document includes a cutaway view of the strap with pulley system, providing a visual understanding of the internal arrangement and interaction of components.

Key Points

• The Tap Up system is noted for its simplicity and economical nature.
• It is suitable for applications requiring straightforward external closure mechanisms.
• The enclosed roller design helps protect the mechanism and ensures smooth operation.