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A rack and pinion has roughly the same purpose as a worm gear with a rack replacing the gear, in that both convert torque to linear force. However the rack and pinion generally provides higher linear speed — since a full turn of the pinion displaces the rack by an amount equal to the pinion's pitch circle whereas a full rotation of the worm screw only displaces the rack by one tooth width.
A linear actuator is an actuator that creates linear motion (i.e., in a straight line), in contrast to the circular motion of a conventional electric motor. Linear actuators are used in machine tools and industrial machinery, in computer peripherals such as disk drives and printers, in valves and dampers , and in many other places where linear ...
310 Motoring was an automotive customization garage based in Los Angeles, California, founded by Marc Laidler in 1999. The name is based on area code 310, for its original location in L.A. The company grew and now has shops across the United States, including 45 in California. Since its beginnings the company has reached wide recognition as the ...
The website expanded into nine more U.S. cities in 2000, four in 2001 and 2002, and 14 in 2003. On August 1, 2004, Craigslist began charging $25 to post job openings on the New York and Los Angeles pages. On the same day, a new section called "Gigs" was added, where low-cost and unpaid jobs can be posted for free.
By means of a leadscrew, rotary motion can be adapted to function as a linear actuator (which produces a linear motion, but is not a linear motor). Another broad classification of actuators separates them into two types: incremental-drive actuators and continuous-drive actuators. Stepper motors are one type of incremental-drive actuators.
In 1902, Huntington and banker Isaias W. Hellman established the Pacific Electric Railway, which would acquire other railways, providing interurban service to new suburban developments and surrounding towns in what is now Greater Los Angeles (Los Angeles, Orange, San Bernardino County and Riverside Counties). The company operated distinctive ...
A wax motor is a linear actuator device that converts thermal energy into mechanical energy by exploiting the phase-change behaviour of waxes. [1] During melting, wax typically expands in volume by 5–20% (Freund et al. 1982).
The General Motors streetcar conspiracy refers to the convictions of General Motors (GM) and related companies that were involved in the monopolizing of the sale of buses and supplies to National City Lines (NCL) and subsidiaries, as well as to the allegations that the defendants conspired to own or control transit systems, in violation of Section 1 of the Sherman Antitrust Act.
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