Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Venetian blind type
Patent
1987-03-23
1988-09-27
Britts, Ramon S.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Venetian blind type
1601761, 160900, E06B 936
Patent
active
047734647
ABSTRACT:
Herein disclosed is an actuator for actuating an vertical blind or curtain of electric type to be mounted on a mounting support face. The actuator is enabled to eliminate the deformations such as torsions of rotating rods thereto to ensure their rotations by driving the two ends of each of the rotating rods with the torques of a pair of motors. The tension to be applied to a traverse rod can be easily adjusted to an appropriate value by fastening a nut on a tensing threaded rod connected to the traverse rod to tense the traverse rod. Rotation transmitting unit can be held in position in a pivotal state even if the tension is applied to the traverse rod. Since the traverse rod is fitted in a bearing by the face contact between ridges and corners, moreover, the rotating torque is dispersed to enhance the breaking stress at the fitted connection.
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patent: 3190346 (1965-06-01), Arena et al.
patent: 3455364 (1969-07-01), Fukuoka
patent: 3463219 (1969-08-01), Osterholz
patent: 3468360 (1969-09-01), Payne
patent: 3500896 (1970-03-01), Endou
patent: 3789905 (1974-02-01), Saito
patent: 4096903 (1978-06-01), Ringle
Britts Ramon S.
Kuron Corporation
Purol David M.
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