Elevator – industrial lift truck – or stationary lift for vehicle – Having specific load support drive-means or its control – Includes control for power source of drive-means
Reexamination Certificate
2007-10-30
2007-10-30
Donovan, Lincoln (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
Having specific load support drive-means or its control
Includes control for power source of drive-means
C187S237000, C187S284000, C187S291000, C414S629000, C414S785000
Reexamination Certificate
active
11051535
ABSTRACT:
A forklift safety sensor and control system for preventing unsafe wear on the bottom surface of the fork. A fork height sensor detects when the fork is below a predefined threshold height at which the bottom surface is in close proximity to the ground or is in contact with the ground. The sensor sends a height signal to a system controller. In response, the controller sends a lockout signal to a lockout device, which prevents the forklift's drive mechanism from moving the forklift relative to the ground. The controller may also send an alert to the driver. When the fork is raised above the threshold height, the lockout is removed.
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Colon Santana Eduardo
Smith Steven W.
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