---
publication_id: "OT-2026-000003291"
title: "Caster device"
published_at: "2026-09-15T20:03:39.163904Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000003291"
categories:
  - "tools-tooling/clamping-tools"
keywords:
  - "b60b33/0002"
  - "b60b33/0002"
---

# Caster device

## Abstract

A caster device for supporting a push cart includes a cap member having a flat top fixed to the push cart and a circular side wall. The circular side wall of the cap member has an inwardly curled lower edge. An inverted and truncated conical ring member has a curved side wall and a flange. A bowl-shaped rotary member is disposed below the ring member such that a horizontal flange thereof abuts the flange of the ring member. The side wall of the rotary member and the curved side wall of the ring member cooperatively define a first annular ball-receiving space. The horizontal flange and the side wall of the rotary member, and the inwardly curled lower edge of the cap member cooperatively define a second annular ball-receiving space. A plurality of steel balls are rotatably confined within the first annular ball-receiving space and the second annular ball-receiving space to permit rotation of the rotary member with respect to the cap member.

## 1. Drawings

[0001] Sheet 1.

[0002] Sheet 2.

[0003] Sheet 3.

[0004] Sheet 4.

[0005] Sheet 5.

[0006] Sheet 6.

[0007] Sheet 7.

[0008] Sheet 8.