A housing for a surveillance camera has an upper housing that is cylindrical and made of steel or the like to withstand ballistic attack. The upper housing houses the pan-and-tilt mechanism, which is suspended from the inside of the upper housing. The camera is carried by the pan-and-tilt mechanism,...http://www.google.com/patents/US6354749?utm_source=gb-gplus-sharePatent US6354749 - Housing for surveillance camera
