Search results
Results from the WOW.Com Content Network
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.
Lightweight hand-held vacuum cleaners, either powered from rechargeable batteries or mains power, are also popular for cleaning up smaller spills. Frequently seen examples include the Black & Decker DustBuster , [ 26 ] which was introduced in 1979, [ 27 ] and numerous handheld models by Dirt Devil , which were first introduced in 1984. [ 28 ]
Robotic vacuum cleaner on a hardwood floor. A robotic vacuum cleaner, sometimes called a robovac or a roomba as a generic trademark, is an autonomous robotic vacuum cleaner which has a limited vacuum floor cleaning system combined with sensors and robotic drives with programmable controllers and cleaning routines.
Early steam-powered vacuum cleaners were mounted in a heavy carriage equipped with a long hose so they could be moved from one location to another, providing a specialized cleaning service by appointment. Stationary-powered vacuum cleaners were built-in and centralized, due to the large and heavy machinery needed to produce the required airflow.
Side views of a bevel (above) and a chamfer (below). A bevelled edge (UK) or beveled edge (US) is an edge of a structure that is not perpendicular to the faces of the piece. . The words bevel and chamfer overlap in usage; in general usage, they are often interchanged, while in technical usage, they may be differentiated as shown in the image on the ri
Booth is known for introducing one of the first powered vacuum cleaners. Before Booth introduced his version of the vacuum cleaner, cleaning machines blew or brushed dirt away, instead of sucking it up. As Booth recalled decades later, in 1901 he attended "a demonstration of an American machine by its inventor" at the Empire Music Hall in London.
The Vacutainer needle is double-ended: the inner end is encased in a thin rubber coating that prevents blood from leaking out if the Vacutainer tubes are changed during a multi-draw, and the outer end which is inserted into the vein. When the needle is screwed into the translucent plastic needle holder, the coated end is inside the holder.
A wall-mounted sharps container. A needle remover is a device used to physically remove a needle from a syringe.In developing countries, there is still a need for improvements in needle safety in hospital settings as most of the needle removal processes are done manually and under severe risk of hazard from needles puncturing skin risking infection.