Hinged arm retainer arrangement
US7864031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2008 |
| Grant date | Jan 4, 2011 |
| Priority date | — |
| Expiry date | Oct 2, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F21/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A school bus has a hinged stop arm, a bidirectional electric motor operatively connected to the hinged stop arm for pivoting the hinged stop arm between a stored position adjacent the school bus and a deployed position extending outwardly of the school bus, and a motor control module for controlling the bidirectional electric motor. A retainer arrangement is attached to the school bus for retaining the hinged stop arm in the stored position positively and a second control module is operatively connected to the motor control module. The retainer arrangement includes a servo motor and a lock member that is moved by the servo motor between a lock position retaining the hinged arm in the stored position and a release position allowing the hinged stop arm to be pivoted outwardly by the motor. The motor and the servo motor are operated by a common switch. The switch is moved to a first position when the hinged stop arm is in the stored position to move the lock member to the release position and after a predetermined time delay to automatically pivot the hinged stop arm to the deployed position. The switch is moved to a second position when the hinged stop arm is in the deployed position…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.