Miniature telltale module
US5442338A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 3, 1993 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | May 3, 2013 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K35/28
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A miniature telltale module which combines a plurality of telltale functions into one unit and provides reduced cost per function. The module uses a miniature rotary actuator, a series of interconnected images and a single light source. The actuator allows a wide tolerances at the inputs while still precisely selecting the image positions. The actuator has a unique locking device (or brake) which automatically engages when power is removed. This feature allows the control circuitry to select an image with a momentary pulse and then remove the power from the actuator. Power consumption is thereby minimized since no power is required by the device except when changing the image to be displayed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.