Hydraulic lifting jack including a safety device for an elevator

Details Hydraulic lifting jack including a safety device for an elevator Hydraulic lifting jack including a safety device for an elevator

1979-12-31

1981-09-15

Watson, Robert C.

Implements or apparatus for applying pushing or pulling force

Hoisting truck

Single throw lever

B66F 504

Patent

active

042892996

ABSTRACT:
A hydraulic lifting jack on wheels, comprising a pair of frame plates, an elevator pivotally mounted on the frame plates, a lifting saddle arranged in the free end of the elevator, and a hydraulic power unit for lifting the elevator, in which a safety device for the elevator is further provided and comprises a support block member pivotally mounted to the elevator, and step block members, each having stop steps in its front slope surface, secured to the frame plates. The support block member is pivoted by a lever into an engaging or disengaging position wherein the support block member engages or disengages with or from the step block members. When the support block member is positioned in the engaged position, the raised elevator is prevented from falling down by the support block member, the bottom of which is supported by the stop steps of the step block members.

REFERENCES:
patent: 1738622 (1929-12-01), Weaver et al.

Affiliated with

Also associated with

Rating

Hydraulic lifting jack including a safety device for an elevator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic lifting jack including a safety device for an elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic lifting jack including a safety device for an elevator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-387254