Reverse-stop mechanism of curtain

Details Reverse-stop mechanism of curtain Reverse-stop mechanism of curtain

2007-05-15

2007-05-15

Thompson, II, Hugh B. (Department: 3634)

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

C160S16810R, C475S338000

Reexamination Certificate

active

10928096

ABSTRACT:
The present invention relates to a reverse-stop mechanism of a curtain, especially for applying to a sheet- or cloth-type curtain, to rigidly stop a reactive force from a gravitation or an external force and also acquire varied speed output, with a characteristic by connecting a fixed first annular gear with a secondary annular gear of a larger pitch circle diameter, wherein a compound gear set, having two planet gears of varied pitch circle diameters, formed in the middle gearing both annular gears thereof, thereby a backwards rotation of the secondary annular gear will be transmitted, through the compound gear set, to the first annular gear, which stops the rotation. With different pitch circle diameters of the first and the secondary planet gear, power outputs will be transferred to varied speeds.

REFERENCES:
patent: 3774477 (1973-11-01), Murphy
patent: 4657060 (1987-04-01), Kaucic
patent: 5845695 (1998-12-01), Cadorette et al.
patent: 6405782 (2002-06-01), Cheng
patent: 6422971 (2002-07-01), Katou et al.
patent: 6887179 (2005-05-01), Yamashita et al.
patent: 6968884 (2005-11-01), Anderson et al.
patent: 6971435 (2005-12-01), Rasmussen
patent: 7021360 (2006-04-01), Schroder et al.

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