Torque limiting drive for blinds

Details Torque limiting drive for blinds Torque limiting drive for blinds

1991-08-16

1993-01-19

Purol, David M.

Flexible or portable closure, partition, or panel

Plural strip, slat, or panel type

Venetian blind type

160900, E06B 936

Patent

active

051799901

ABSTRACT:
A torque-limiting angle drive for blinds and having a housing, first and second bearings on the housing defining respective first and second rotational axes, a drive member rotatably supported in a bearing and having drive formations, a driven member rotatably supported in another other bearing, stops to define ends of a predetermined arc of rotation of the driven member, a plurality of driven formations on the driven member at spaced intervals therearound and, slipping formations arranged on one of the drive member and the driven member located so that when the driven member reaches one or other end of its arc of rotation, one or other of the slipping formations is disengaged whereby to provide a slipping action when the drive member is over-rotated.

REFERENCES:
patent: Re33216 (1990-05-01), Marocco
patent: 3828838 (1974-08-01), Anderle et al.
patent: 3860056 (1975-01-01), Bruneau
patent: 3996988 (1976-12-01), de Wit
patent: 4103727 (1978-08-01), Spohr
patent: 4267875 (1981-05-01), Koks
patent: 4350197 (1982-09-01), Haller
patent: 4541468 (1985-09-01), Anderson
patent: 4616688 (1986-10-01), Agos
patent: 4653564 (1987-03-01), Marocco
patent: 4676292 (1987-06-01), Valle et al.
patent: 4848435 (1989-07-01), Helver
patent: 4875516, Marocco
patent: 4928744 (1990-05-01), Oskam
patent: 4945970 (0790-08-01), Marocco
patent: 5010940, Marocco

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