The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 11, 2004
Filed:
Jun. 18, 2002
Applicant:
Inventors:
Eric Paul Lagarde, Sallanches, FR;
Yann Le Ru, Thyez, FR;
Assignee:
Somfy, Cluses, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 3/74 ; F16H 5/708 ; E06B 9/30 ; E06B 9/36 ; E06B 9/56 ;
U.S. Cl.
CPC ...
F16H 3/74 ; F16H 5/708 ; E06B 9/30 ; E06B 9/36 ; E06B 9/56 ;
Abstract
Drive device for manually driving a blind, roller shutter or the like, comprising an epicyclic reduction gearbox consisting of the juxtaposition of two simple planetary gear trains of type I (A , B , a ,/A , B , a ), the sun wheels (A , A ) of which are mechanically linked so as to be driven simultaneously at the same speed and the annulus gear (B ) of the first planetary gear train of which, on the input side of the reduction gearbox, is fixed and the other annulus gear (B ) of which can rotate. The reduction ratio is less than or equal to 3. This drive device makes it possible to obtain a low reduction ratio with a small diameter.