Triple layer folding door

Details Triple layer folding door Triple layer folding door

2011-08-02

2011-08-02

Purol, David (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

With mounting or supporting means

C160S220000

Reexamination Certificate

active

07987891

ABSTRACT:
A triple layer folding door includes an inner layer door, an outer layer door, a middle layer door provided therebetween, and a sliding arrangement, which comprises: a left and right pulley mounted on a both end portion of the middle layer door respectively, a left belt winding on the left pulley, wherein a first end of the left belt extending to the right end portion of the inner layer door from the left pulley and a second end of the left belt extending to the right end portion of the outer layer door from the left pulley, and a right belt winding on the right pulley, wherein a first end of the right belt extending to the left end portion of the inner layer door and a second end of the right belt extending to the left end portion of the outer layer door.

REFERENCES:
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patent: 1838491 (1931-12-01), Martin
patent: 1960860 (1934-05-01), Allen
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patent: 2425016 (1947-08-01), Weaver
patent: 2841390 (1958-07-01), Urquhart
patent: 3067813 (1962-12-01), Henatsch
patent: 3072394 (1963-01-01), Henatsch
patent: 3425160 (1969-02-01), Petterborg
patent: 4852300 (1989-08-01), Keast
patent: 6311757 (2001-11-01), Schuette et al.

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