Safety device for protecting fall of a lift

Details Safety device for protecting fall of a lift Safety device for protecting fall of a lift

1984-07-25

1986-03-04

Rolla, Joseph J.

Elevator, industrial lift truck, or stationary lift for vehicle

Stationary lift for roadway vehicle or required component...

Having specific drive means for support

187 872, 254 10B, 182141, B60S 1300

Patent

active

045735522

ABSTRACT:
A safety device of a lift for vehicles which has a stopper shaft and a rack to protect accidental fall of cradles of the lift during operations. The stopper shaft is pivoted at one end to an upper frame of the lift with sufficient flexibility for lateral movement, while another free end of the stopper shaft is kept at a resting position on an extension of the rack during the cradles being kept at the lowermost position. The rack is provided with a first guide comprising a vertical member disposed alongside the rack and a slightly inclined flat member under the rack, so that the free end of the stopper shaft moves over the rack without sheering off the course during rise of the cradles, and can be engaged with the rack when the cradles is stopped at a desired raised position. The rack is also provided with a passage for the free end having an inclined surface at one end near the resting position and a second guide mounted thereto to lead the free end on the extension of the rack. The stopper shaft is provided in the middle with a lever to bring the free end into the passage so that the free end automatically returns to the resting position through the passage and the second guide when the cradles are let down.

REFERENCES:
patent: 1275381 (1918-08-01), Butler et al.
patent: 3317004 (1967-05-01), Harrison, Jr.

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