Borescope for drilled shaft inspection

This invention describes a system for looking inside deep holes, like those used for construction, especially when they're filled with mud. A camera and light are lowered into the hole, sending live video to a screen above ground. Uniquely, the patent also details a method to measure the mud's thickness by comparing the camera's weight in air versus its weight when submerged.

Why it matters: Since 2004, camera, lighting, and sensor technologies have advanced significantly, making a more compact, higher-resolution, and cost-effective system for visual inspection and slurry density measurement feasible.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: ModerateCustom housing, camera, light, monitor, slurry density sensor

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