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The patents included here are those which are commonly associated with spiral screwdrivers and there is a great deal of cross-over among patents for spiral screwdrivers, ratchet screwdrivers and push (Archimedian) drills. A number of patents for ratchet screwdrivers/mechanisms are included because the ratchet mechanism is used in combination with so many screwdrivers those are spiral. The patents included in this database will however, by way of the illustration or text, relate in some way to spiral screwdrivers and few of them are included patents are for accessories or ancillary devices. A number of patents relating to spiral screwdrivers are not titled as they may be titled with some name or the other.
Classification:
The basic USPTO classification into which the spiral screwdriver falls is 74/127 which is based upon the manner in which the item functions. In case you are interested, the USPTO definition of this classification looks like this. Many of these are related to patents for items other than spiral screwdrivers. They are included because they are used in conjunction with a specific spiral screwdriver patent like a ratchet may be incorporated into a spiral screwdriver. There are many accessories that help to add-on and retro-fit devices for spiral screwdrivers are also included. a ratchet screwdriver is just lighter and more convenient then a big drill, even more so now that the cordless drills everyone has are 18+ volt and huge.
Companies manufacturing screwdrivers:
First it was found out about the continuing utility when a cabinetmaker with an explanation that as a professional in a shop, he sometimes found himself using three or four cordless drills at once, but in the field, it was a lot easier to always have an ratchet screwdriver in the tool bag then to schlep one or two cordless drills. People don't have to worry about a charger, so the ratchet screwdriver makes a great emergency backup. People mostly own a cordless drill, which is used for drilling, and it is used and the ratchet screwdriver for putting in the screws. The torque is great; it's easy on the wrist and its fast that assures a better work efficiency.
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US $20.00
