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2. Garage door opener - Wikipedia

   en.wikipedia.org/wiki/Garage_door_opener

   The electric overhead garage door opener was invented by C.G. Johnson in 1926 in Hartford City, Indiana. [1] Electric Garage Door openers did not become popular until Era Meter Company of Chicago offered one after World War II where the overhead garage door could be opened via a key pad located on a post at the end of the driveway or a switch inside the garage.

3. Chain drive - Wikipedia

   en.wikipedia.org/wiki/Chain_drive

   Drive shafts tend to be tougher and more reliable than chain drive, but the bevel gears have far more friction than a chain. For this reason virtually all high-performance motorcycles use chain drive, with shaft-driven arrangements generally used for non-sporting machines. Toothed-belt drives are used for some (non-sporting) models.

4. Washing machine - Wikipedia

   en.wikipedia.org/wiki/Washing_machine

   Washing machines perform several rinses after the main wash to remove most of the detergent. Modern washing machines use less hot water due to environmental concerns; however, this has led to the problem of poor rinsing on many washing machines on the market, [125] which can be a problem to people who are sensitive to detergents.

5. HE vs. Traditional Washing Machines: What’s the Difference?

   www.aol.com/vs-traditional-washing-machines...

   There are two main types of HE machines: a front-load, which has a small door on the front that opens and closes, and a top-load, which has a solid front and a lid on the top, like a standard ...

6. Belt (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Belt_(mechanical)

   A drawback to belt drives is that they transmit less power than gears or chain drives. However, improvements in belt engineering allow use of belts in systems that formerly only allowed chain drives or gears. Power transmitted between a belt and a pulley is expressed as the product of difference of tension and belt velocity:

7. Category:Garage door openers - Wikipedia

   en.wikipedia.org/wiki/Category:Garage_door_openers

   Garage door opener manufacturers (6 P) Pages in category "Garage door openers" The following 7 pages are in this category, out of 7 total.

8. Mechanical advantage - Wikipedia

   en.wikipedia.org/wiki/Mechanical_advantage

   For a toothed belt drive, the number of teeth on the sprocket can be used. For friction belt drives the pitch radius of the input and output pulleys must be used. The mechanical advantage of a pair of a chain drive or toothed belt drive with an input sprocket with N A teeth and the output sprocket has N B teeth is given by

9. Wig wag (washing machines) - Wikipedia

   en.wikipedia.org/wiki/Wig_wag_(washing_machines)

   A vertical-axis washing machine has two mechanisms: a central agitator for washing and a drum for spinning, both driven by the same motor and controlled independently by clutches to the belt drive. The wig-wag is mounted atop the washing machine's transmission, where it oscillates back and forth like a railroad signaling wigwag (hence the name ...