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:
Aug. 28, 2012
Filed:
Jun. 23, 2010
Eric Lagarde, Sallanches, FR;
Didier Menetrier, Marignier, FR;
Eric Lagarde, Sallanches, FR;
Didier Menetrier, Marignier, FR;
Somfy SAS, Cluses, FR;
Abstract
This electric actuator for driving a home-automation screen is provided with a spring brake () comprising a helical spring (), a friction part () having a friction surface () against which the helical spring () bears radially. Said brake further comprises an inlet part () suitable for driving the spring in rotation in a direction reducing the contact force between the spring () and the friction part (), and an outlet part () connected to the screen. While the screen is being lowered, the inlet part () drives the spring () in rotation with the contact force being decreased to the extent that the outlet part () is released in rotation, without direct contact between the inlet part and the outlet part. The inlet part () has at least two contact surfaces () suitable for transmitting drive torque (C) for raising the screen (), by direct contact, to at least two corresponding contact surfaces () of the outlet part ().