| 摘要 |
A holding device designed specifically to hold screw driving bits for drills andother tools. As these driver bits are almost exclusively of a 1/4 inch diameter round or hexagonal shaft construction, this holder is designed to hold only these types of bits. The advantage of developing a holder that can accommodate only the most common driver bit format is that it allows the holder to be manufactured of a one-piece construction. This one piece construction provides the following combination of benefits never before available: - Assembly free mass production capabilities; - Use of one of five low cost manufacturing methods that can produce the product from rubber or plastic, in one step. These three methods are injection molding, compression molding die-stamping, extruding and laser cutting. - A multi-bit holding product which can be manufactured for under a dollar and retailed for under three dollars. This is an important feature for a successful after-market bit holding device, but especially important if the device is to besuccessful as a unit in which bit sets could be retailed in. While current drillindexes lack important features such as sturdiness and reliability their cost isonly in the order of a few cents. Though not essential to the functioning of the BIT BAND, this patent identifies a new technology that will optimize the operation of this unit and ofany rubber unit designed to grip and release shafts and to provide temporary storage of said shafts. This technology is a specific profile of hole that optimizes grip properties on driver-bit shafts (or other types of shafts) while still allowing easy removal. The specific hole profile is "hour-glass" shaped and shall be referred to here after as Hour-Glass Profile (HGP). 9 Claims, 3 drawing sheets
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