CPC G01D 11/245 (2013.01) | 22 Claims |
1. A smoke detector comprising:
a body including an upper portion configured to face a surface on which the smoke detector is mounted and a spiral ramp positioned below and extending away from the upper portion, the spiral ramp configured to engage with an indicator to cause movement of the indicator toward and away from the upper portion in response to movement of the indicator relative to the spiral ramp.
|