Bottom stop mechanism for a window covering

Details Bottom stop mechanism for a window covering Bottom stop mechanism for a window covering

1997-02-13

2000-03-07

Stodola, Daniel P.

Flexible or portable closure, partition, or panel

Pleating type

With preformed pleats

1601761, 160177, 160307, 160321, A47H 500

Patent

active

060327162

ABSTRACT:
An inventive bottom stop mechanism uses one of the lift cords to operate. While the cord is unwinding from the shaft, the cord leaves the shaft along a line tangent to the shaft. As the last turn of cord is unwound from the shaft, and the point of attachment of the cord to the shaft passes that point of tangency, the angle of the cord with respect to the shaft changes. This change in angle of the cord is used to raise a pawl which engages a ratchet wheel to stop the shaft and prevent further rotation in that direction. When the direction of the shaft is reversed to again start winding the cord thereupon, the cord angle returns to its prior value, releasing the stop.

REFERENCES:
patent: 1507324 (1924-09-01), Nevatt
patent: 1746936 (1930-02-01), Hadden
patent: 3135369 (1964-06-01), Nisenson et al.
patent: 4088171 (1978-05-01), Schluep et al.
patent: 4433765 (1984-02-01), Rude et al.
patent: 4487243 (1984-12-01), Debs
patent: 4623012 (1986-11-01), Rude et al.
patent: 4697630 (1987-10-01), Rude
patent: 4729418 (1988-03-01), Rude
patent: 5123472 (1992-06-01), Nagashima et al.
patent: 5228491 (1993-07-01), Rude et al.
patent: 5375643 (1994-12-01), Rude
patent: 5482105 (1996-01-01), Rude
patent: 5507374 (1996-04-01), Rude
patent: 5628356 (1997-05-01), Marocco

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