Spring-loaded brake for an actuator for driving a household screen and actuator equipped with such a brake
US8469171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2010 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | Aug 14, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06B2009/905
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A spring loaded brake for an actuator for driving a household screen includes a helical spring having radially extending end lugs, a friction piece including a friction surface against which the spring presses, an input piece which drives the spring in rotation in one direction to reduce a force of contact between the spring and the surface, an output piece which drives the spring in rotation in a direction to increase the force of contact between the spring and the surface and wherein the brake also includes two end stops which always rotate as one about an axis of the spring and each of which forms a stop to limit axial movement of the spring in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.