Having Specific Load Support Drive-means Or Its Control Patents (Class 187/250)
- With specific electrical component (Class 187/277)
- Actuated by presence of obstruction in shaft (Class 187/300)
- Actuated by location of access barrier or its lock (Class 187/301)
- Actuated by load support contacting trip in shaft (Class 187/302)
- Actuated by load support speed sensor or governor (Class 187/305)
- Actuated by human operator engaging specific input part (Class 187/306)