Combined elevator guiding and safety braking device

Details Combined elevator guiding and safety braking device Combined elevator guiding and safety braking device

2008-05-20

2008-05-20

Donovan, Lincoln (Department: 2837)

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...

C187S375000, C187S288000

Reexamination Certificate

active

07374021

ABSTRACT:
A combined elevator guiding and braking device (30) includes movable members (34) positioned symmetrically about opposite sides of guide rail (24). Guide members (40) are supported on the movable members (34) for following along the guide rail (24) under normal elevator system operation. When a safety braking function is required, braking members (44) engage the surfaces on the guide rail (24) when the movable members (34) move into a second operating position to achieve the braking function. The inventive arrangement integrates the car guiding and safety braking functions into a single device.

REFERENCES:
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patent: 5224570 (1993-07-01), Fromberg
patent: 5377786 (1995-01-01), Nakagawa
patent: 5439075 (1995-08-01), Skalski et al.
patent: 6092630 (2000-07-01), Wendel et al.
patent: 6176350 (2001-01-01), Schlosser
patent: 6758310 (2004-07-01), Muff et al.
patent: 2004/0112683 (2004-06-01), Liebetrau et al.
patent: 05132263 (1993-05-01), None
PCT International Search Report, Nov. 25, 2002.
PCT International Preliminary Examination Report for International Application No. PCT/US02/32250 filed Oct. 9, 2002.

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