chair lift (also called a stair lift or stair chair lift) is a motorized device used to help people with mobility issues travel up and down stairs safely and comfortably. Below is a detailed explanation of the specifications typically associated with a chair lift:
| Specification | Details |
|---|---|
| Type | Straight / Curved / Outdoor |
| Weight Capacity | Usually 250 400 lbs (113 181 kg); heavy-duty versions go up to 600 lbs |
| Drive System | Rack and pinion, cable driven, or screw-driven |
| Power Supply | Plug-in AC with battery backup (ensures function during power outages) |
| Seat Options | Swivel seat, foldable seat, padded seat, armrests, adjustable height |
| Track Material | Aluminum or steel; custom tracks for curved models |
| Track Length | Custom-fit based on staircase length (standard up to 20 ft for straight) |
| Speed | Typically 0.15 0.20 m/s (about 2030 seconds for one floor) |
| Safety Features | Seatbelt, obstruction sensors, emergency stop, swivel lock, braking system |
| Controls | Armrest joystick or button; remote controls (top and bottom landings) |
| Installation Time | Straight: 24 hours; Curved: 48 hours or more |
| Certifications | ASME A18.1, CE (Europe), ADA compliant (in public buildings) |
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