---
publication_id: "OT-2026-000001915"
title: "Spiral conveyor system with direct cage engagement"
published_at: "2026-09-15T19:09:29.123187Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000001915"
categories:
  - "material-handling/conveying-systems"
keywords:
  - "b65g17/066"
  - "b65g17/086"
  - "b65g17/08"
  - "b65g21/18"
  - "b65g21/18"
  - "b65g21/18"
---

# Spiral conveyor system with direct cage engagement

## Abstract

43 Disclosed herein are embodiments of a spiral conveyer belt system. Embodiments of the system allow for a longer compressed pitch and improved engagement/disengagement interactions between a drum and an inner edge of a spiral conveyor belt while maintaining necessary product support and belt support strength. In part, the disclosures relate to a grooved, “ribless” cage bar cap, wherein grooves extend below an outer-facing surface of the cage bar cap and are configured to engage with a belt support rod inner-end or a belt-link tab. The bar cap groove may be straight (generally orthogonal to the outer-facing surface) or angled to better engage and drive the belt so the belt cannot slip forwards or outwards with respect to a drum outer boundary.