Safety device for elevators

Elevator – industrial lift truck – or stationary lift for vehicle – Having specific means contacting or on load support for... – Includes movable contact component on support for engaging...

Reexamination Certificate

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Details

C187S372000, C187S376000, C187S406000, C188S072200

Reexamination Certificate

active

07398863

ABSTRACT:
A safety device brakes an elevator car with a guide rail exhibiting an oblong guide flange. The safety device includes a base carrying a retaining element and an abutment with the guide flange positioned therebetween. A mechanism squeezes, when braking, a braking element blocking roller between the guide flange and the abutment. The mechanism, co-operating with an electromagnet, moves the braking element in a controlled way between different positions associated with different operating conditions of the safety device.

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patent: 5224570 (1993-07-01), Fromberg
patent: 6012553 (2000-01-01), Liebetrau et al.
patent: 6082506 (2000-07-01), Huang et al.
patent: 6173813 (2001-01-01), Rebillard et al.
patent: 6758310 (2004-07-01), Muff et al.
patent: 805 782 (1951-05-01), None
patent: 37 06 802 (1988-09-01), None
patent: 0 841 280 (1998-05-01), None
patent: 0 870 719 (1998-10-01), None
patent: 1 067 084 (2001-01-01), None

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