A signal structure is disclosed. The signal structure may include a housing and a light head disposed within the housing. The light head may include at least one signal light mounted thereto. The signal structure may also include at least one actuator operatively coupled to the light head and configured to move the light head within the housing.
Mechanized Signal Mast
2017-10-12
Patent
Electronic Resource
English
Tema Archive | 1991
Engineering Index Backfile | 1950
|Engineering Index Backfile | 1953