The electric razors (also known as dry razors , electric shavers , or just shavers ) have rotating or oscillating knives. Electric razors usually do not require the use of shaving cream, soap, or water. The razor may be powered by a small DC motor, which is either powered by a battery or mains. Many modern ones are powered by a rechargeable battery. Alternatively, electro-mechanical oscillators driven by AC-powered solenoids may be used. Some very early mechanical shavers do not have an electric motor and must be powered by hand, for example by pulling a rope to drive the flywheel.
Electric shavers fall into two main categories: foil or rotary style. Users tend to choose one or the other. Most rotary shavers do not have wires - they are filled with a plug charger or placed inside the cleaning and charging unit.
Video Electric razor
Histori
The first person to receive patents for power-fired razors was John F. O'Rouke with his US patent 616554 filed in 1898. Others followed, such as American manufacturer Colonel Jacob Schick who patented their first electric razor in 1930 The Remington Rand Company developed an electric razor even further, first producing an electric razor in 1937. Another important inventor was Prof. Alexandre Horowitz, from Philips Laboratories in the Netherlands, who invented the concept of a rotating electric razor (swivel). It has a shaving head that consists of a cutter that cuts the hair that enters the razor's head at the skin level. Roland Ullmann of Braun in Germany is another decisive inventor for the development of modern electric razors. He was the first to combine rubber and metal elements in shavers and develop more than 100 electric shavers for Braun. In the course of his career, Ullmann filed more than 100 patents for innovation in the context of dryshavers. The major manufacturers are introducing new improvements to the hair cutting mechanism of their products every few years. Each manufacturer sells several different generation cutting mechanisms at the same time, and for each generation, several models with different features and accessories to achieve various price points. Improvements to cutting mechanisms tend to be 'trickle-down' to lower the price model over time.
Early versions of electric razors are intended for use only on dry skin. Many electric razors have recently been designed to allow wet/dry use, which also allows them to be cleaned by using running water or cleaning machines included, reducing cleaning efforts. Some patience is required when starting using this type of razor, as the skin usually takes time to adjust to the way an electric razor lifts and cuts hair. Moisturizers specially designed for electric shearing are available.
Battery powered razors
At least since the mid-1960s, battery-operated electric razors were available using rechargeable batteries sealed in razor cases, previously nickel cadmium or, more recently, nickel metal hydrides. Some modern shavers use Lithium-ion batteries that do not experience memory effects. The sealed battery shaver has an internal or external charging device. Some shavers can be designed to be plugged directly into an outlet with a swing-out or pop-up plug, or have a removable AC cable. Other shavers have refilled the base unit plugged into an AC outlet and provided DC power on the base contact (eliminating the need for an AC-to-DC converter to be inside a razor, reducing the risk of electric shock).
Maps Electric razor
General
Some models, generally marketed as "travel shutters" (or "travel shavers"), use removable or disposable rechargeable batteries, usually AA or AAA. It offers the option to purchase batteries while traveling rather than carrying a charging device. The design of some electric shavers has been criticized for cutting designs that stand out as being conducive to hair loss.
References
Source of the article : Wikipedia
0 Comments