| 摘要 |
<p>AUTOMATIC AIR REGISTER A self-regulating air register includes a housing through which air can pass, and louvres in the housing for closing and opening the flow path for air. A crank arm is connected to the louvres and can, upon rotation, adjust the degree of closure. A shaft extends through the housing means and a bi-metallic element is connected to the shaft at one end and to a control knob at the other end, the control knob being mounted to the housing and being capable of selective adjustment in terms of angle. Thus, the bi-metallic element is adapted to regulate the angular orientation of the shaft with respect to the housing means. A lever is connected to the shaft and extends perpendicularly therefrom. The lever defines a slot in which part of the crank arm is captive. The slot has a first part arranged such that when the crank arm part is located therein no crank arm rotation is caused by lever rotation. The slot has a second portion disposed such that when the part of the crank arm is located in the second portion, the crank arm is caused to rotate when the lever rotates.</p> |
