misfire. vb (intr). 1. (Firearms, Gunnery, Ordnance & Artillery) (of a firearm or its projectile) to fail to fire, explode, or ignite as or when expected. 2. (Automotive Engineering) (of a motor engine or vehicle, etc) to fail to fire at the appropriate time, often causing a backfire.
Belt drives are considered to be the best opener that you can buy. Belt drive openers utilize a rubber belt drive system and are as dependable as chain drives. But they are basically silent! So if you have a garage door attached to the home, and you dislike the noise associated with the automatic door openers, this is certainly a great option. Belt drive openers tend to last longer than any other motor on the market. Screw drives are the third type of garage door opener. They use a lifting apparatus that utilizes beside a threaded steel rod. Essentially there are less moving parts in the screw drive then in the other garage door openers, so it is reduced maintenance.
The motor is in the box on the upper-right. A garage door opener is a motorized device that opens and closes garage doors. Most are controlled by switches on the garage wall, as well as by remote controls carried by the owner.