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An air purifier or air cleaner is a device which removes contaminants from the air in a room to improve indoor air quality. These devices are commonly marketed as being beneficial to allergy sufferers and asthmatics , and at reducing or eliminating second-hand tobacco smoke .
Patent model of Daniel Hess's carpet sweeper. In 1860 a manual vacuum cleaner was invented by Daniel Hess of West Union, Iowa. Called a "carpet sweeper", it gathered dust with a rotating brush and had a bellows for generating suction. [4] [5] Another early model (1869) was the "Whirlwind", invented in Chicago in 1868 by Ives W. McGaffey. The ...
The manual vacuum cleaner was a type of non-electric vacuum cleaner, using suction to remove dirt from carpets, being powered by human muscle, similar in use to a manual lawn mower. Its invention is dated to the second half of the 19th century, when patents were granted to inventors in the United States, Britain, France, and elsewhere.
Omron was established by Kazuma Tateisi (立石一真) in 1933 (as the Tateisi Electric Manufacturing Company) and incorporated in 1948. The company originated in an area of Kyoto called "Omuro (御室) ", from which the name "Omron" was derived. Prior to 1990, the corporation was known as Omron Tateisi Electronics. During the 1980s and early ...
Henry Allergy (HVA160) - A smaller, light blue version of the standard Henry model for capturing allergens, 6-litre capacity. [7] Henry Wash (HVW370) - A larger, dark blue version unlike any one of the standard Henry models, carpet cleaner, 15-litre capacity. [8] Henry Quick - A cordless stick vacuum cleaner, much different to the other drum ...
This datum is calculated as follows: P = 1/8.5 x F x S where P translates to the power in air watts; F is the airflow in CFM; and S for the water lift in inches. The standard air watt formula is from ASTM International (see document ASTM F558-21). [3] The air watts indicate the motor's global performance, and thus the central vacuum's ...
As long as the cleaner was consistently pulled backwards, tension in the spring would remain constant and the turbine would continue spinning. It was designed for rural areas that did not have electricity and was very similar to the carpet sweeper. In 1935, the company introduced the Kirby Model C, the first product to carry Jim Kirby's name. [9]
Henry is the brand name given to a cylinder vacuum cleaner made and sold by Numatic International, and is the only mass-produced consumer vacuum cleaner still made in the United Kingdom. [1] It is most notable for its cartoon eyes and mouth on the body of the vacuum cleaner , making a face, with the hose connector or hose as its nose.