Elevator – industrial lift truck – or stationary lift for vehicle – Miscellaneous
Reexamination Certificate
2000-06-19
2001-10-16
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
Miscellaneous
C187S397000
Reexamination Certificate
active
06302240
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an auxiliary safety lift device, and more particularly to an auxiliary safety lift device for the cab of an elevator.
2. Description of the Related Art
A conventional safety device for the cab of an elevator comprises a press button which is connected to that of the alarm bell of the guard of the building so that when a person is limited in the cab of the elevator, the user may inform the guard of the accident.
However, when the elevator is stopped, the user limited in the cab of the elevator cannot assure the height and position of the elevator so that he cannot escape from the elevator by himself and has to stay in the cab of the elevator and wait continuously until the rescuer arrives. In such a manner, when the fire, the earthquake or the like takes place, the user limited in the cab of the elevator is easily hurt due to the accident.
In addition, when the control system of the elevator fails, the brake of the power supply will automatically lock the elevator to prevent the elevator from falling down so that the elevator easily stops between two adjacent floors.
However, the user limited in the cab of the elevator cannot control the position of the elevator by himself Therefore, when the rescuer opens the door of the elevator, the user has to climb upward or downward from the elevator through a certain distance so as to reach the opening of the nearest floor, thereby easily causing danger to the user.
SUMMARY OF THE INVENTION
The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional safety device for the cab of an elevator.
In accordance with one aspect of the present invention, there is provided a auxiliary safety lift device for a cab of an elevator comprising: a box having a first side defining a through hole and a second side defining a chamber, and a slide groove defined in a front side of the chamber; an inspection board made of transparent material secured in the second side of the box and aligning with the through hole of the box so that a user can view and inspect an ambient environment from the inspection board through the through hole of the box; a control panel secured in the chamber of the box and defining a plurality of receiving spaces therein; a plurality of control buttons each secured in a respective one of the receiving spaces of the control panel; a safety board slidably secured in the slide groove of the chamber of the box; an outer cover plate pivotally mounted on the box for encompassing the box; and two sensors, a first one of the two sensors mounted between the box and the outer cover plate, and a second one of the two sensors mounted on one side of the safety board.
In practice, the inspection board co-operates with an indication line on an inner wall of the elevator so that the user can clearly inspect the position of the cab of the elevator in a building.
Accordingly, the auxiliary safety lift device of the present invention works in conjunction with the spare power so that the user limited in the cab of the elevator can inspect the relative position of the cab of the elevator in the building according to the safe and automatic operational procedures of the auxiliary safety lift device so as to escape from the cab of the elevator by himself, thereby achieving a safety function for protecting the user limited in the cab of the elevator.
Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings.
REFERENCES:
patent: 5581057 (1996-12-01), Ferrario et al.
patent: 5740888 (1998-04-01), Aulanko et al.
patent: 5971109 (1999-10-01), Aulanko et al.
patent: 6029778 (2000-02-01), Lacarte Estallo
patent: 6227335 (2001-05-01), Koeppe, Jr. et al.
patent: 1285568-A (1989-01-01), None
Baxley Charles E.
Salata Jonathan
LandOfFree
Auxiliary safety lift device for the cab of 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 Auxiliary safety lift device for the cab of an elevator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Auxiliary safety lift device for the cab of an elevator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2595632