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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-2026048967-A1, on 19 February 2026. 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-2026-000002690

Multiple brake hoist for overhead crane

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Hoists and Cranes
Inventors
COSTA LARRY J
Assignee
MAZZELLA LIFTING TEXHNOLOGIES INC
Original source
US-2026048967-A1, the United States Patent and Trademark Office, 19 February 2026
Document SHA-256
ee985a239135acbd01d095c616179d93c8ad61d88776aec4c2c018d98cd4a71e

Abstract

A multiple brake hoist system includes a hoist for lifting and lowering a load and a power supply for supplying electrical power to the hoist. The power supply is configured to retain electromagnetic and capacitive energy upon deactivation. Primary and secondary brakes engage the hoist upon deactivation from the power supply. The primary and secondary brakes are connected to the power supply in a fail-safe configuration to maintain a non-engaged state on the hoist during activation of the power supply. The primary brake establishes an engaged state on the hoist upon deactivation from the power supply. The secondary brake establishes an engaged state on the hoist after a predetermined time-delay associated with consuming the predetermined amount of electromagnetic and capacitive energy of the power supply upon deactivation. In this manner, the primary and secondary brakes prevent a differential torsional stress between the mechanical components upon deactivation of the power supply.

Publication information

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Citation

OpenTechnical Publication OT-2026-000002690, “Multiple brake hoist for overhead crane,” published September 15, 2026 at 19:14:41 UTC, https://opentechnical.org/p/OT-2026-000002690.

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