Marveille. Garage Doors. October 10th , 2017.
In response to the inherently dangerous old style garage spring issues as above, a newer and safer system for opening the overhead garage door was created. The idea was to transfer the load or weight of the door via a cable and pulley system to a vertical rod now equipped with a torsion (twisted) spring. This type of spring is installed with specialty hardware and bolts to a fixed plate at one end, while the entire spring is installed around a horizontal pipe. This load balancing device is normally installed directly over the header of the garage opening. Using appropriate cables, connectors and pulleys, the weight of the garage door is transferred into the torsion spring system. The difference between the old style stretched spring and the newer torsion spring is the way that the spring energy is stored. With the old style stretched spring, the energy is stored and released by pulling on the spring or returning the spring to its un-stretched condition.
This story was published in the "Far North Dallas Advocate" magazine in the March 2011 issue. It had a happy ending, but how easily it could have turned tragic. What if the wife had not awakened during the night? What if the husband did not have a rifle? What if the robber struggled with the husband and took his rifle away? A simple robbery could have easily turned into a homicide. Now ask yourself this: "What if that had been your home and your family that were threatened?"
An exception to this relates to "do it yourself" garage door kits that are sold at local home centers. A homeowner could install the door because these kits do not come with a professional quality package of hardware that should or would require special knowledge for the installation. These kits do not typically employ torsion springs that would require special knowledge, proper tools, and working skills to install. The doors are typically for light duty use. Professional installation services are often available through a home center to assist a homeowner in need of a specialized installation. As with most trade specific tasks, years of experience working as a professional installer qualifies tradesmen for their contracting license. The average homeowner watching a few television shows that give rough explanations of how to install garage doors is not usually qualified to install his or her own door. These "how to" television shows are no substitute for the many skills acquired after working in the field.
Dallas Police Liutenant Barry Payne of the North Central Patrol Division was quoted as saying: "Citizens must realize when they leave a garage door opener in their car in their driveway, it is like leaving a key to their house outside where everyone will know where it is. The solution is simple: Park in the garage, or dont leave a garage door opener in the car in the driveway. I cant say it any clearer than that. Actually, this home invasion could have been avoided in three different ways: the family could have parked their car in the garage, they could have parked outside of the garage, yet removed the garage door opener from the vehicle, OR they could have securely locked the door going from the garage to the home.
In contrast to an overhead type of garage door, be it sectional or single panel, roll up doors have a totally different type of operating system. When these doors are used, they can be concealed in an overhead or under mounted trough. These doors operate similarly to a roll top desk door except for how they are stored when not in the closed position. They normally coil as they are retracted, and require significant gear trains to reduce the effort required to move these doors up and down into position. Often the forces needed to move these roll up doors require a reduction type of transmission that allows a very heavy door to be operated effortlessly.
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