helical rolling
11Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
12Rotating locomotion in living systems — A passive wheel Rotating locomotion encompasses two distinct modes of …
13Manual transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic …
14Skew arch — A skew arch (also known as an oblique arch) is a method of construction that enables an arch bridge to span an obstacle at some angle other than a right angle. This results in the faces of the arch not being perpendicular to its abutments and its …
15Worm drive — A worm drive is a gear arrangement in which a worm (which is a gear in the form of a screw) meshes with a worm gear (which is similar in appearance to a spur gear, and is also called a worm wheel). The terminology is often confused by imprecise… …
16Digital Audio Tape — can also refer to a compact cassette with digital storage: DCC or one of several digital reel to reel formats Digital Audio Tape A 90 minute DAT cart …
17Drum Motor — A Drum Motor (sometimes referred to as a motorised pulley) is in simplistic terms a highly efficient geared motor drive enclosed within a steel shell providing a single component driving pulley for conveyor belts. Drum Motor with Planitory Gear …
18Tanning — For other uses, see Tanning (disambiguation). For human tanning, see Sun tanning. Tannery redirects here. For other uses, see Tannery (disambiguation). Tanned leather in Marrakech …
19Merkava — For the religious/mystical connotations of the word, see Merkabah. Merkava Merkava Mark IV in Yad La Shiryon, Latrun. Type …
20Laserdisc — Not to be confused with disk laser, a flat configuration solid state laser. Not to be confused with VCD, DVD, or Blu ray, optical disc formats employing digital video encoding. Not to be confused with CED, a coincident but incompatible analogue… …
