Safety lock system for a lift

Details Safety lock system for a lift Safety lock system for a lift

2007-04-24

2007-04-24

Lillis, Eileen D. (Department: 3654)

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having position lock for engaging sustaining drive means or...

C187S203000, C187S207000, C187S363000

Reexamination Certificate

active

11052186

ABSTRACT:
A lift having a safety lock system includes a mast that may be supported by a base, and a frame that can be lifted or lowered along the mast. The safety lock system includes a first support beam that is located adjacent to the mast and a second support beam that is located opposite the first support beam relative to the mast. The safety lock system also includes a first lock and a second lock. Each of the first lock and the second lock are operable between a plurality of locked positions and an unlocked position. In the locked position, the first lock is engaged with the first support beam to lock the lift frame to the first support beam, and the second lock is engaged with the second support beam to lock the lift frame to the second support beam. Each of the first lock and the second lock can be placed in the unlocked position, wherein the lift frame can be freely lifted or lowered relative to the mast. The safety lock system also includes a lock control mechanism that is operatively coupled to the first lock and the second lock to simultaneously operate the first lock and the second lock between the plurality of locked positions and the unlocked position.

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