| (19) |
 |
|
(11) |
EP 0 420 061 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
05.06.1991 Bulletin 1991/23 |
| (43) |
Date of publication A2: |
|
03.04.1991 Bulletin 1991/14 |
| (22) |
Date of filing: 21.09.1990 |
|
| (51) |
International Patent Classification (IPC)5: B66B 29/04 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
29.09.1989 US 414865
29.09.1989 US 414866
|
| (71) |
Applicant: OTIS ELEVATOR COMPANY |
|
Farmington, CT 06032 (US) |
|
| (72) |
Inventors: |
|
- Adrian, Willy
W-3063 Obernkirchen (DE)
- Moldenhauer, Detlev, B.
W-3060 Stadthagen (DE)
- Herrmann, Dietrich
W-3303 Vechelde (DE)
- Abraham, Detlev
W-1000 Berlin (DE)
|
| (74) |
Representative: Blum, Rudolf Emil Ernst et al |
|
c/o E. Blum & Co
Patentanwälte
Vorderberg 11
8044 Zürich
8044 Zürich (CH) |
|
| |
|
| (54) |
Escalator handrail obstruction device with sensors |
(57) An elastomeric collar is positioned at the mouth of the escalator handrail reentry
housing. The collar will deform when subjected to forces running parallel to the direction
of travel of the handrail. Sufficient deformation of the collar will activate a switch
which turns the escalator off. If an object enters the reentry housing and becomes
lodged therein against the handrail, the forces generated thereby normal to the direction
of travel of the handrail will activate a pressure sensor which in turn will turn
the escalator off.