"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 7328766 | Two-wheel drive two-wheeled vehicle A two-wheel drive motorcycle having a drive train that supplies power to the front wheel and includes a series of rigid shafts or other internalized drive systems. The front wheel drive consists of components located on the axis of steering within the head tube and ... | 02/12/2008 |
| 7191677 | Adjustable angle drive for a rotary power tool The present invention provides an adjustable angle drive for a rotary power tool such as a drill. The adjustable angle drive includes input and output shafts journalled for rotation in input and output housings. The input and output shafts are rotatably coupled thro... | 03/20/2007 |
| 7010995 | Bevel gear with annular housing The invention relates to an angle drive having a drive housing (51) with a first axis (A1) for bearing means and with a second axis (A2) for bearing means, which latter axis (A2) is aligned radially relative to the first axis ... | 03/14/2006 |
| 5896776 | Pinion gear with splined coupling directly to a drive shaft An pinion gear includes a shaft having an input end, an output end and an intermediate portion being disposed therebetween. The input end includes a spline portion for directly securing the pinion gear to a drive shaft. The output end includes gear teeth ... | 04/27/1999 |
| 5582065 | Assembly with two bevel gear angle drives A drive assembly has two bevel gear angle drives (9, 10) for driving an agricultural implement (2) via a tractor power take-off shaft. The assembly has a pivot bearing (11) which effects a pivotable connection between the two bevel gear angle drives (9, 1... | 12/10/1996 |
| 5339907 | Device for connecting an agricultural implement to a tractor A device for connecting an agricultural implement to a tractor, towing it and driving it, via a power take-off shaft, has a double drive (8) which includes two angle drives (15, 16) which are arranged one above the other and which are pivotable relative t... | 08/23/1994 |
| 5327794 | Device for driving a tool positioned on a pivotable part Device for driving a tool (4) positioned on a pivotable part (2). The device comprises a combustion engine (5) or the like which is arranged stationary, such that the extension of the motor drive shaft (6) is perpendicular to and crosses the pivot axis (2... | 07/12/1994 |
| 4922766 | Electric fan apparatus An electric fan apparatus having a rotatable hub member provided in the central portion thereof and surrounded with a bearing housing through a plurality of bearings; a vertical main shaft connected to a motor shaft via a coupling; a rotary member connect... | 05/08/1990 |
| 4904131 | Chuck head for automatic machine tools A chuck head for automatic machine tools comprises a fork mounted on the end of a movable arm and an electrically driven chuck mounted between the arms of the fork. A mechanism effect angular displacements of the chuck is located within the head supportin... | 02/27/1990 |
| 4860526 | Angle drive assembly for rotary cutters An angle drive assembly for rotary cutters embodies a basic housing having an output shaft mounted for rotation therein. A cap housing is rotatably coupled in sealed relationship with the basic housing by the cooperation of a peripheral annular member at ... | 08/29/1989 |
| 4520692 | Speed differential device A speed differential device for achieving selected rotational speed differentials between a drive element and a driven element and comprising a main shaft having a pair of spaced rotational members journalled thereon in spaced relationship, an auxiliary s... | 06/04/1985 |
| 4437355 | Bevel gear power transmitting gear trains Power transmitting gear trains comprising four bevel gears (2, 3, 5, 6) mounted between a vertical floating driving shaft (1) and a horizontal propeller shaft (4). The driving shaft integral with gear 2 is pivotably mounted about its axis X, but without a... | 03/20/1984 |
| 4296654 | Adjustable angled socket wrench extension A jointed drive unit is provided having a power output shaft used for driving a socket or the like, and an input shaft which transmits power to the output shaft through a gearbox permitting any angular orientation between input and output shafts greater t... | 10/27/1981 |
| 4158313 | Electric hand tool A power hand tool including a manually engageable housing, a prime mover within the housing, a tool bit engaging chuck projecting from the housing, power transmission means within the housing and between the prime mover and the chuck; said power transmiss... | 06/19/1979 |
| 4068470 | Gas turbine engine with convertible accessories Drive means for connecting a gas turbine engine to its accessories are so constructed as to allow the accessories to be selectively positioned to any one of several predetermined circumferential positions about the perimeter of the engine. This feature pe... | 01/17/1978 |
| 4006607 | Constant speed ratio coupling for shafts with time-varying orientations A homokinetic coupling is disclosed for coupling two rotatable shafts each having an axis of rotation such that the ratio of the speeds of rotation of said shafts about their respective axes is maintained constant even as said axes undergo relative time-v... | 02/08/1977 |