s the name suggests a could use a total of 256
garage door opener is a combinations. This was sufficient
device that is used to open to overcome the problem of
and close garage doors. Generally accidental opening of others
the models are remote controlled. garages, however the security
issue was still not solved.
Evolution Anybody with a radio frequency
recorder could record the
The initial garage door openers frequency when somebody opened
consisted of an actuator that his garage door and later used
could open or close the door. that frequency to open the
This actuator was controlled by a garage.
remote. The remote used was very
simple and consisted of a Present day technology has
transmitter and on the actuator overcome the security concern to
side consisted of a receiver and a large extent by use of rolling
associated electronics. The frequency or sometimes called
receiver would function for a hopping code technology. In this
change in amplitude. However they every time a new frequency is
had a major draw back namely used to open and close the door.
security. Anybody with a
transmitter could open or close Mechanical Part
the garage door. There were many
incidents of garage opening by The mechanical part of the garage
neighbors accidentally when they door opener is pretty simple.
were trying to open their own Mainly three types are used:
garages. chain drives, screw drives and
belt drives. Chain drives are
The next change came with dip noisy but are the cheapest. Screw
switches. These dip switches drives have a lead screw and nut
system to open and close the occupies less space, the trolley
door. They are a bit costly. The type is more popular. This is
latest models use plastic liner because of safety; in the
on the tracks to reduce noise and jackshaft type it is difficult to
increase the operation speed. sense when a person or a pet is
Belt drives are the quietest and being crushed under the door.
are comparatively costly. The
mechanism also consists of a main Some modern systems have auto
spring that is the most important reverse in case of obstruction
element of the system. Usually like a pet or a vehicle. The
two types of springs are used remotes generally operate up to a
linear expansion and torsional range of 150 feet. Also most
springs. systems have keypads that are
installed outside the garage and
In the market two types of garage can be used if the remote goes
door openers are available namely dead.
jackshaft type and trolley type.
Even though the jackshaft type
About the Author:
Keith George always writes about valuable news & reviews. A related resource is Garage Door Opener Further information can be found at Your Home
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