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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-4884939-A, on 5 December 1989. 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-2026-000003470

Self-contained laser-activated depth sensor for excavator

Published
Permanent URL
Classification
Sensors, Controls & Machine Vision › Position and Presence Sensing
Assignee
LASER ALIGNMENT
Original source
US-4884939-A, the United States Patent and Trademark Office, 5 December 1989
Document SHA-256
87b61a58d1e1d91783bd7a698d27dd5599205655e4f460d54dc9ac6dc3e435cb

A laser-actuated depth sensor for an excavator, including a laser receiver, an inclination sensor assembly and indicators to inform the operator of the position and inclination of the excavator stick, is completely self-contained in a housing that may be mounted to the stick of an excavator. The indicators, which are each an array of LEDs, and corresponding indicia are readily visible to the operator who does not have to take his or her eyes off the excavation work zone.

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Abstract

A laser-actuated depth sensor for an excavator, including a laser receiver, an inclination sensor assembly and indicators to inform the operator of the position and inclination of the excavator stick, is completely self-contained in a housing that may be mounted to the stick of an excavator. The indicators, which are each an array of LEDs, and corresponding indicia are readily visible to the operator who does not have to take his or her eyes off the excavation work zone.

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Publication information

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Citation

OpenTechnical Publication OT-2026-000003470, “Self-contained laser-activated depth sensor for excavator,” published September 15, 2026 at 20:31:41 UTC, https://opentechnical.org/p/OT-2026-000003470.

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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.