Elevator – industrial lift truck – or stationary lift for vehicle – With barrier for regulating access to load support – Includes motor or motor driven linkage for shifting barrier
Reexamination Certificate
1999-08-26
2001-03-20
Salata, Jonathan (Department: 2837)
Elevator, industrial lift truck, or stationary lift for vehicle
With barrier for regulating access to load support
Includes motor or motor driven linkage for shifting barrier
C127S070000, C127S070000
Reexamination Certificate
active
06202797
ABSTRACT:
TECHNICAL FIELD
This invention relates to detecting when an elevator mechanic is in a hoistway either above or below the cab, and causing an emergency stop, if necessary.
BACKGROUND ART
The primary cause of accidental death to elevator mechanics is the severe crushing injury that occurs when the mechanic is working in the pit (below the elevator) or in the overhead (above the elevator) and the elevator moves unexpectedly. Heretofore, mechanics have relied upon use of the elevator controls within the inspection box on the car top to control elevator movement, and thus provide for the mechanic's safety. However, this is not always adequate.
DISCLOSURE OF INVENTION
Objects of the invention include a foolproof detection of a person, such as an elevator mechanic being in a hoistway, providing for automatic stopping of the elevator when a person is in jeopardy, and providing a fail-safe method of assuring elevator mechanic safety.
According to the present invention, elevator mechanics wear a device, the presence of which is detectable by complementary devices disposed at the top and at the bottom of each elevator car. The detectable device may be built into the standard mechanic uniform, and the uniform may have a distinguishing feature to identify the fact that such a device is present in the uniform. The uniform may also have the capability to respond to the presence of the elevator so as to warn the mechanic. In accordance further with the invention, sensing of the mechanic safety device will perform an emergency stop of the elevator.
Other objects, features and advantages of the present invention will become more apparent in the light of the following detailed description of exemplary embodiments thereof, as illustrated in the accompanying drawing.
REFERENCES:
patent: 4839631 (1989-06-01), Tsuji
patent: 5283400 (1994-02-01), Leone et al.
patent: 5443142 (1995-08-01), Glaser
patent: 5736692 (1998-04-01), Lumme et al.
patent: 6050369 (2000-04-01), Leone et al.
patent: 113823 (1990-12-01), None
patent: 113824 (1990-12-01), None
patent: 310273 (1990-12-01), None
patent: 398970 (1991-04-01), None
patent: 337480 (1994-07-01), None
patent: 239548 (1994-08-01), None
patent: 219663 (1994-08-01), None
Sansevero Frank M.
Skolnick Steven M.
Slabinski Chester J.
Otis Elevator Company
Salata Jonathan
LandOfFree
Automatic protection of elevator mechanics does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic protection of elevator mechanics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic protection of elevator mechanics will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2454576