Elevator – industrial lift truck – or stationary lift for vehicle – Miscellaneous
Reexamination Certificate
1999-11-01
2001-06-19
Lillis, Eileen D. (Department: 3652)
Elevator, industrial lift truck, or stationary lift for vehicle
Miscellaneous
C187S272000
Reexamination Certificate
active
06247559
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to an elevator with an elevator car that can travel in an elevator hoistway between a hoistway overhead and a hoistway pit and, in particular, to an elevator having a machine room below an entrance area of a landing door of the elevator hoistway nearest to the hoistway pit with an entrance for maintenance work on the drive equipment needed for operation of the elevator.
The European patent specification EP 0 415 218 shows an elevator with a machine room located below. The drive machine and the control are in a room at the side of the elevator hoistway below the lowest floor, being positioned in the room on the same side as its door. The room is closed on its upper side by a cover. With the cover open, the room is accessible from above.
A disadvantage of this known arrangement is that the room, which is accessible only from above, and which is occupied by the drive machine, control panel, traction sheave, and control cabinet, affords practically no free space for maintenance staff to stand. Moreover, there is the danger that during maintenance work items of clothing can be caught by rotating parts. Another disadvantage is that walking over the cover in the area of the entrance of the elevator door causes structure-borne noise that can be heard at a great distance. Furthermore, dirt gathers in the area of the edge of the cover and falls into the machine room each time the cover is opened.
SUMMARY OF THE INVENTION
It is an object of the present invention to avoid the disadvantages of the known arrangement and to make a machine room that is located below readily accessible.
In essence, the advantages resulting from the present invention relate to the fact that the entrance to the machine room is not visible from outside and no special building measures such as penetration of the floor, a frame for the cover, fastenings to the floor slab on the cover frame, sound insulation measures, etc. are necessary. This notwithstanding, even when the elevator car is stuck at the lowest floor, the machine room is accessible. Emergency operation functions can be carried out readily in all cases. Furthermore, under normal circumstances the hoistway pit can be used for access to the machine room.
REFERENCES:
patent: 6039152 (2000-03-01), Schops et al.
patent: 297 10 732 U (1997-09-01), None
patent: 298 06 526 U (1998-09-01), None
patent: 0 415 218 (1993-11-01), None
patent: 1-321280 (1989-12-01), None
patent: 09002762 (1997-01-01), None
Inventio AG
Lillis Eileen D.
MacMillan Sobanski & Todd LLC
Tran Thuy V.
LandOfFree
Elevator with machine room below does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Elevator with machine room below, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Elevator with machine room below will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2526702