The Boeing Company

Vincent E Engdahl

Gary Mark Buckus

William Worden Cleary

Farshad Forouhar

Gordon Dale Davis

Curtis N Sovereen

Disclosed herein is a scissor lift comprising a passenger basket. The scissor lift also comprises a base that comprises wheels. The scissor lift further comprises a scissor extension mechanism between the passenger basket and the base. The scissor extension mechanism is configured to raise the passenger basket in a first direction relative to the base and lower the passenger basket in a second direction, opposite the first direction, relative to the base. The scissor lift additionally comprises a through-beam sensor system co-movably coupled to the scissor extension mechanism. The through-beam sensor system moves in a third direction, perpendicular to the first direction and the second direction, when the scissor extension mechanism raises the passenger basket and moves in a fourth direction, opposite the third direction, when the scissor extension mechanism lowers the passenger basket.

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Everett, WA, United States of America

Vincent E Engdahl