Double-sided door braking equipment for a operator

Details Double-sided door braking equipment for a operator Double-sided door braking equipment for a operator

2008-03-11

2008-03-11

Siconolfi, Robert A. (Department: 3683)

Brakes

Operators

Spring

C160S188000, C160S298000, C049S139000, C049S199000

Reexamination Certificate

active

07341129

ABSTRACT:
This invention relates to a double-sided equipment for a braking system, comprising a first braking pad, a second braking pad, a braking component, a fixing spring component, a compression spring, and an electromagnet, wherein the braking component located between the first braking pad and the second braking pad is movable along the axle of the door operator but is unrotatable with respect to the door operator axle. As a result of the compression spring, the first braking pad and the braking component will be pushed together towards the second braking pad, thereby the braking component is clamped from its two sides by the two braking pads. When the first braking pad is retracted by the electromagnet, the fixing spring enables the braking component to separate from the second braking pad, causing the braking component to be fully separated from the first and second braking pads.

REFERENCES:
patent: 3853167 (1974-12-01), Wardlaw
patent: 6055885 (2000-05-01), Shea
patent: 6092582 (2000-07-01), Liu
patent: 2002/0111242 (2002-08-01), Balli et al.
patent: 2005/0172559 (2005-08-01), Hsieh

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