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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-5479677-A, on 2 January 1996. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000003291

Caster device

Published
Permanent URL
Classification
Tools & Tooling › Clamping Tools
Original source
US-5479677-A, the United States Patent and Trademark Office, 2 January 1996
Document SHA-256
9c436f2d3a91f61fc27d1e6ee90d392140290ae0a4e0bbc401ac3f026725ff14

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.

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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

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Publication information

Plain textMarkdownManifestIntegrity record

Citation

OpenTechnical Publication OT-2026-000003291, “Caster device,” published September 15, 2026 at 20:03:39 UTC, https://opentechnical.org/p/OT-2026-000003291.

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Terms

This record reproduces a document published elsewhere and is provided for reference and study. Rights in the original remain with its owner. See the publication policy.