Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7682272 | Driving device of armature balance machine Disclosed herein is a driving device of armature balance machine, in which a driving motor is formed on the same centerline of the armature, a hinge block pivot-connected by the hinge shaft is installed in the finger mounter of the bracket in such a manner that the ... | 03/23/2010 |
| 7491142 | Belt driving device, driving device, method, image forming apparatus A belt driving device is provided and includes a plurality of rollers including a driving roller. A belt is configured to be tensioned by the plurality of rollers, and to be driven by the driving roller. The driving roller is arranged adjacent to where an outside bo... | 02/17/2009 |
| 6849012 | Tensioner for a chain or belt A chain or belt tensioner comprises a plunger displaceable in a housing between retracted and extended positions. A stop ring between the plunger and housing frictionally contacts a smooth surface of the housing. A recess in the plunger has a tapered face for engage... | 02/01/2005 |
| 6093123 | Integrated chain drive tensioner and sprocket assembly An integrated chain drive, sprocket, and tensioning assembly includes sprockets, a drive chain, and a guiding and supporting structure for the sprockets. This structure includes a fixed shoe that is integral with the body of a fluid operated tensioning de... | 07/25/2000 |
| 6086036 | Vehicle emergency auxiliary by-pass device Herein disclosed is an emergency bracket which is attachable to a support surface of choice and may be temporarily used to by-pass a defective auxiliary unit, such as an alternator, or the like.... | 07/11/2000 |
| 5938551 | Variable tension pulley system The variable tension pulley system including a drive pulley, a slave pulley, a belt interconnecting the drive pulley and slave, a tensioner assembly positioned between the drive pulley and the slave pulley and in engagement with the belt. The tensioner as... | 08/17/1999 |
| 5816969 | Driving apparatus for a flatbed scanner A driving apparatus for a double carriage scanner drives the lamp carriage and the optical carriage in tandem. The driving apparatus is located at one side of the scanner housing for ease in assembly and maintenance. It consists of a pulley assembly and a... | 10/06/1998 |
| 5720683 | Mechanical chain tensioner with belleville springs A mechanical tensioner having a piston biased by a spring in a protruding direction. A ratchet assembly includes a spring, a ratchet piston, and a pair of ratchets may also provide a no-return function. A plurality of belleville disc springs provides the ... | 02/24/1998 |
| 5261860 | Drive apparatus A drive apparatus, able to perform positioning of a driven object to be driven with a high degree of accuracy, sufficiently obtain the desired thrust even when using the low output of a driving source such as a motor, and allow the speed of movement of th... | 11/16/1993 |
| 5169367 | Chain drive system for vehicles A drive chain assembly for vehicles having two chains, an idler sprocket, and a thrust link or strut. The first chain extending from the vehicle motor to the idler sprocket. The second chain extending from the idler sprocket to a driven axle sprocket. The... | 12/08/1992 |
| 5067581 | Articulated drive with a belt and pulley arrangement An articulated drive system for an articulated motor vehicle having a motor and a steerable drive wheel on opposite sides of a pivot axis. The system comprises a drive belt connecting a drive pulley and a load pulley. Idler pulleys and a belt tensioning p... | 11/26/1991 |
| 5034088 | Band wheel and tension control An improved mounting for spaced band wheels about which the sealing bands of a band sealer move is achieved by mounting at least one of the band wheels carrying each band from a double ended cylinder movable longitudinally with respect to the inter-band w... | 07/23/1991 |
| 5000724 | Roller chain tensioning device A roller chain tensioning device includes a pair of low friction chain engaging blocks that are held selectively together by a flexible strap and fastener device. The blocks include formed surfaces for loosely receiving the side plates of the chain and fo... | 03/19/1991 |
| 4693666 | SCARA type manipulator apparatus A SCARA type robotic manipulator apparatus including a base supporting first and second independently operable drive motors, toothed belts engaging toothed gears for rotating primary and secondary arms in response to the first and second drive motors resp... | 09/15/1987 |
| 4655731 | Tensioning arrangement for drive belts A diametrical slot is provided in the bottom of the cup-shaped support of a tensioning roller assembly, for receiving a clamping bolt. A leaf spring is mounted in the bore and has a bending zone engaging the bolt, the leaf spring extending from on both si... | 04/07/1987 |
| 4424873 | Constant belt tension assembly for wheelchairs A wheelchair having left and right drive wheels (18, 26) each connected with a wheel pulley (16). Left and right electric drive motors (10) are connected with drive pulleys (12, 20). V-belts (14) extending between the drive and wheel pulleys. Left and rig... | 01/10/1984 |
| 4416647 | Belt tensioner A tensioner for an endless power transmission belt is provided wherein such belt is employed in driving a sheave comprising at least one accessory which upon being driven creates a slack side and a tight side in the belt on opposite sides of the sheave an... | 11/22/1983 |
| 4068535 | Method and apparatus for controlling the tension of drive belts A method and apparatus for controlling the tension of flexible drive belts, or a single drive belt, connecting a drive pulley to a driven pulley. The apparatus includes a first idler assembly for engaging the slack run of the drive belts, a second idler a... | 01/17/1978 |
| 3994180 | Expansible sprocket device In a variable diameter driving sprocket for a chain drive change speed device comprising a plurality of circumferentially spaced radially movable toothed elements mounted on said driving sprocket over which the chain is threaded; a means to move the tooth... | 11/30/1976 |
