Elevator – industrial lift truck – or stationary lift for vehicle – Stationary lift for roadway vehicle or required component... – Having specific drive means for support
Patent
1980-11-26
1982-12-21
Truhe, J. V.
Elevator, industrial lift truck, or stationary lift for vehicle
Stationary lift for roadway vehicle or required component...
Having specific drive means for support
187 71, B66B 1324
Patent
active
043644538
ABSTRACT:
The installation comprises a switch 121 inserted between an electric source 117 and the motor 105 of a winch 104, a switch which is of the two-part type of which one 121a is solid with a moving contact 108 and the other 121b with a car 103.
The electric elements of the installation such as motor 105, electromagnets 118 and 119 and a motor 114 of a drum 110 for connecting cables 116 are fed directly by a line 200 from electric source 117 while a line 300 runs to part 121b of switch 121, the other part 121b receiving lines corresponding to feeding other poles of said electric elements 105, 118, 119, 114.
When the current is interrupted, electromagnets 118-119 are deexcited and springs 149-150 thrust levers 141-142. Car 103, thus uncoupled from moving contact 108, descends by its own weight, unwinding connecting cables 116. A centrifugal brake 112 assures a reasonable and constant speed until car 103 reaches the stop.
Even if the current is reestablished while the car is descending by itself, motor 105 cannot be started since switch 121 is open.
REFERENCES:
patent: 1270716 (1918-06-01), Flannery
patent: 1301924 (1919-04-01), Evangelist
patent: 1373122 (1921-03-01), Evangelist
patent: 3645519 (1972-02-01), Schwarz et al.
patent: 3866718 (1975-02-01), Hiergeist
Duncanson Jr. W. E.
Truhe J. V.
LandOfFree
Safety installation for elevators does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety installation for elevators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety installation for elevators will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-402411