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On June 28, 1994, Hoveround began selling its power wheelchairs direct to the customer. Within 90 days, Hoveround was profitable. Hoveround achieved FDA certification as a registered manufacturer in 1994, followed by ISO 9001 certification in 1997. In 1998, private holding company Jordan Industries purchased an 80% stake in Hoveround.
Psion Series 3, (on 5 cm squares) The Psion Series 3 was the first truly useful personal digital assistant (PDA). Its purpose was to replace the old-fashioned paper agenda and Rolodex, but it could do much more. Besides the agenda with multiple views, it featured a database, a word processor, a spreadsheet with charts, world times, and more.
The Acme thread was developed in 1894 as a profile well suited to power screws that has various advantages over the square thread, [note 1] which had been the form of choice until then. It is easier to cut with either single-point threading or die than the square thread is (because the latter's shape requires tool bit or die tooth geometry that ...
Robertson screwdrivers are easy to use one-handed, because the tapered socket tends to retain the screw, even if it is shaken. [3]: 85–86 They also allow the use of angled screwdrivers and trim-head screws. The socket-headed Robertson screws are self-centering and reduce cam out. They also stop a power tool when set, and can be more easily ...
The different shaped tips have different properties that engineers can utilize. If an engineer were to use a detent to ensure proper nesting of the screw, they might choose to use a cone point type of screw. One might often need to use a flat point when the screw must press perfectly flat against a surface. The most common type is the cup point.
The first Apple product to include pentalobe screws internally was the Mid 2009 MacBook Pro 15-inch model. Three pentalobe screws were used to attach the battery to the internal frame. A 1.5 mm flat-blade (slotted) screwdriver could easily remove these screws, which were originally mistaken for 5-point Torx screws. [4]