Fire escape – ladder – or scaffold – Means maintaining platform level on angularly movable support – Swingable support
Patent
1975-08-11
1977-09-13
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Means maintaining platform level on angularly movable support
Swingable support
212144, B66F 1104
Patent
active
040475930
ABSTRACT:
Transportable booms having lift platforms are now well established in the art. In the lift platform where the lift controls are located, there are means to operate an actuator and four bar linkage system in such manner that the lifting torque is substantially constant, and the arcuate or angular movement of the upper boom about its articulate connection on the lower boom is substantially constant, being at all times proportioned to the linear travel of the fluid motor actuator. In this way, the central purpose of the invention is achieved which is to obtain a controllable actuating system.
The four bar linkage system achieves optimum results when the driving link a is related to the follower link b driven link c and base link d in the proportion a; b; c; d = 1.52; 1.28; 1.00; 0.76 and the fixed pivot of the driving link is offset 0.27 units from the fixed pivot for the driven link.
REFERENCES:
patent: 3064754 (1962-11-01), Broderson
patent: 3085648 (1963-04-01), Benedetto
patent: 3252542 (1966-05-01), Trump
patent: 3844378 (1974-10-01), Balogh
Machado Reinaldo P.
Teco, Inc.
Young John A.
LandOfFree
Actuating system for transportable articulated booms having rais does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Actuating system for transportable articulated booms having rais, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Actuating system for transportable articulated booms having rais will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-268106