Transmission device for a vertical blind

Details Transmission device for a vertical blind Transmission device for a vertical blind

1994-03-02

1996-03-26

Bonck, Rodney H.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74425, 160174, E06B 938, F16H 116

Patent

active

055011160

ABSTRACT:
A transmission device for a vertical blind including a housing, a worm disposed within the housing and having an upper flange, a lower flange, and at least two spiral teeth between the upper flange and the lower flange, each of the spiral teeth having an end gradually extending outwardly from the worm, and a worm gear disposed within the housing and meshed with the worm, the worm gear being formed with a partition across a number of teeth thereof.

REFERENCES:
patent: 2223997 (1940-12-01), Lorentzen
patent: 3398590 (1968-08-01), Campbell et al.
patent: 3722311 (1973-03-01), Northrup
patent: 4306608 (1981-12-01), Frentzel et al.
patent: 4967823 (1990-11-01), Gagnon

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