Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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 |
| 7694596 | Gear system and rotary transducer equipped with this gear system In a gear system and a rotary transducer provided with the gear system, the gear system includes a first part, a convex toothed wheel, a supporting body, relative to which the first part and the convex toothed wheel are rotationally mounted, and engaging elements wh... | 04/13/2010 |
| 7211014 | Variable sprocket IVT machine A variable sprocket IVT machine has a sprocket wheel, on an input shaft, including a plurality of wheel bodies which are independently rotatable on the shaft, a sprocket slidably located in and projecting radially from a sleeve in each wheel body, connecting arrange... | 05/01/2007 |
| 7199544 | Device for steering a vehicle A device for steering a vehicle, particularly a helicopter or even a simulator, comprising a handgrip that can be moved in a manner that is linear to the drive of a drive device, particularly the power unit or motor. The linear motion of the handgrip is coupled with... | 04/03/2007 |
| 7121160 | Mechanical transmission A constant power mechanical transmission with seamless, ripple free, infinitely variable torque multiplying outputs comprises an input shaft and an output shaft. The input shaft is coupled to a pair of oscillating levers whereby rotation of the input shaft causes os... | 10/17/2006 |
| 7100466 | Angular velocity profile generator An angular velocity profile generator [22,24] comprising an input shaft [46], an output shaft [56], a universal joint coupling the shafts by pivot pins [70,75] situated on two pivot axes which are normal to one another, means [49] ... | 09/05/2006 |
| 7074007 | Continuously variable transmission A continuously variable transmission is disclosed for use in rotationally or linearly powered machines and vehicles. The single axle transmission provides a simple manual shifting method for the user. An additional embodiment is disclosed which shifts automatically ... | 07/11/2006 |
| 7066042 | Advancing/retracting mechanism An advancing/retracting mechanism having a pair of cams is disclosed. The advancing/retracting mechanism includes a first cam, a second cam, and a barrel. The first cam includes an angled surface and a shoe, and the second cam includes an angled surface and a slider... | 06/27/2006 |
| 7008276 | Propulsion system A propulsion system which is designed to be used on a payload platform such as a spacecraft, satellite, aircraft or ocean vessel. To operate the system, electrical power is required. However, during operation the system does not require fuel or mass to be expelled i... | 03/07/2006 |
| 6974294 | Article handling system and method An article handling system and method for holding articles and moving selected articles individually from and/or to the article handling system. A plurality of vertically spaced article holding trays are mounted for independent rotation, each tray having a plurality... | 12/13/2005 |
| 6928895 | Ballscrew locking nut A ballnut assembly is provided in which a locknut (20), which is normally unloaded becomes loaded in the event of failure of a primary load path. This loading causes relative motion between locking nut (24) and the threads of a shaft (8) such th... | 08/16/2005 |
| 6919658 | Coordinate measuring stage An XY coordinate measuring stage includes a drive unit for a coordinate axis. The drive unit has a friction rod and a motor, the motor including a motor shaft in contact with a side of the friction rod. An applied pressure roller contacts an opposite side of the fri... | 07/19/2005 |
| 6789439 | Reciprocal force outputting mechanism A reciprocal force outputting mechanism having a body having a slide slot that contains a slide block, thereby providing for the linear, reciprocal movement of the slide block within the slide slot. The slide block has an elongated opening formed centrally and a row... | 09/14/2004 |
| 6684724 | Shape memory alloy step drive mechanism for providing step motion to a system A shape memory alloy step drive mechanism includes at least one shape memory alloy element (1) with a fixed end, the other end being connected to one end of a lever (2). The lever (2) is provided with a pawl (4) which is located to move on the teeth of a ... | 02/03/2004 |
| 6427198 | Method, system, and program for determining system configuration Disclosed is a system, method, and program for determining the configuration of a computer system having a planar board, a planar bus, and attached planar devices. A read operation is performed on planar configuration memory indicating addresses for each ... | 07/30/2002 |
| 6336887 | Double orbital transmission A double orbital transmission is disclosed which has first and second input shafts (12 and 13) which carry first and second eccentrics (14 and 16). The pawl carrier (24) is mounted on the second eccentric and the pawl carrier carries a plurality of pawls ... | 01/08/2002 |
| 6119539 | Infinitely and continuously variable transmission system An infinitely and continuously variable transmission system capable of gradually multiplying TORQUE while decreasing RPM and vice-versa. For a given input shaft TORQUE and RPM, the system delivers to the output shaft such increases or reductions in TORQUE... | 09/19/2000 |
| 6062096 | Continuously variable transmission utilizing oscillating torque and one way drives A transmission utilizes oscillating torque to vary the mechanical power transmitted to a load. An arm assembly is rotatably coupled to a frame. At the ends of the arms are eccentric masses, rotatably coupled thereto. An input shaft rotates the masses abou... | 05/16/2000 |
| 6044718 | Continuously variable transmission utilizing oscillating torque and one way drives A transmission utilizes oscillating torque to vary the mechanical power transmitted to a load. An arm assembly is rotatably coupled to a frame. At the ends of the arms are eccentric masses, rotatably coupled thereto. An input shaft rotates the masses abou... | 04/04/2000 |
| 5899113 | Variable speed drive having intermediate alternating movements Variable speed drive to be connected to a rotating driving shaft (5) and to a rotating driven shaft (6) includes at least two angled bearings (7, 7'), controller for controlling the orientation of the axis (13, 13') of each angled bearing (7, 7') adapted ... | 05/04/1999 |
| 5860320 | Variable ratio power transmission A variable ratio power transmission in the form of a gear box is described, in which the gear ratio of the input and output shafts can be varied continuously between a maximum and a minimum. The power transmission comprises a first bevel wheel (40) rotata... | 01/19/1999 |
| 5653142 | Intermittently rotary gearing To provide an intermittently rotary gearing that converts rotary motion of a motor to intermittent rotary motion by utilizing a mechanical structure, an input shaft interlocking with a drive shaft of the motor is provided, a first gear and a second gear b... | 08/05/1997 |
| 5636935 | Saw chain drive device and method of manufacturing saw chain drive device A saw chain drive device comprising a clutch drum and a drive member. The clutch drum has an axis of rotation and includes an end wall forming at least two apertures, and at least one of the apertures is radially spaced from the axis of rotation. The driv... | 06/10/1997 |
| 5609061 | Turntable with stepping drive Bearing system for a turntable (10) with a stepping drive, in which a table plate (12) is rotatably mounted on ball bearings on top of a housing (14), having drive pins (36) disposed on the same diameter offset at uniform angular distances and protruding ... | 03/11/1997 |
| 5605072 | Load-isolated, single-cycle mechanism A driven gear (3a), a gear (11a) to a rotary solenoid (15a) and an output drive gear (19a) are mounted to rotate together, preferably as one part turning on a stationary shaft (7a). The driven gear and the output drive gear have disengagement sectors (5a ... | 02/25/1997 |
| 5520065 | Incremental speed reduction unit An incremental speed reduction unit mounted between a fluid meter and a totalizer for reducing the speed at which the totalizer operates comprises a drive gear rotatably supported on a shaft and drivingly rotated by the fluid meter. A ring shaped gear int... | 05/28/1996 |
| 5297449 | Transmission device A transmission device having a simplified construction as well as a higher power transmission efficiency is provided, wherein a rotational speed can be changed steplessly without interrupting a power transmission and the rotation can be reversed. In the o... | 03/29/1994 |
| 5243868 | Continuously and infinitely variable mechanical power transmission A continuously and infinitely variable mechanical power transmission that utilizes the principles of gyrodynamics in a torque converter and gearing arrangement as its means of achieving continuous and infinitely variable torque ratios between input and ou... | 09/14/1993 |
| 5123291 | Snap-action spring drive for load-reversing switches of multiple contact switches Snap-action spring device for load-reversing switches of multiple contact switches whose spring can be loaded by a drive. In conventional load-reversing switches, a gear moves a cam disk to and fro between two end positions, so that the contacts which clo... | 06/23/1992 |
| 5048358 | Rotary phased radial thrust variable drive transmission A rotary phased radial thrust variable drive transmission which is lcoated between an input driving member, such as the pedal-driven sprocket of a bicycle, and an output driven member, such as the hub of a bicycle wheel which are mounted for relative rota... | 09/17/1991 |
| 5036716 | Infinitely variable transmission A mechanical transmission is provided to transmit rotary mechanical motion at a mechanical advantage that is selectively and infinitely variable. An output shaft in an output drive mounting frame is driven by a rotary input drive in an input drive mountin... | 08/06/1991 |
| 4907474 | Mechanical torque converter A mechanical torque converting transmission for producing an output with variable, controllable speed and torque characteristics comprises a rotary input shaft adapted for attachment to a rotary power source and connected to a main drive gear. The drive g... | 03/13/1990 |
| 4895046 | Incremental drives An incremental drive for the incremental driving of a rotary shaft or of a line device, having a rotary driver shaft adapted to be driven by a power means. A plurality of cams are mounted on the drive shaft each having an offset camming surface relative t... | 01/23/1990 |
| 4716783 | Intermittent gear lock mechanism An intermittent gear wheel lock mechanism includes major engaging portions and secondary engaging portions formed on one surface of an intermittent gear wheel and spaced by a predetermined distance. When an unlock lever is inserted, and a lock member is d... | 01/05/1988 |
| 4610591 | Metal bar feed control device for the feeding of an automatic multiple-spindle lathe A control device for feeding metal bars to guide equipment for feeding an automatic multiple-spindle lathe. The device consists of a series of drive shafts, each of which accounts for the feeding of a bar. The shafts are equal in number to the lathe spind... | 09/09/1986 |
| 4606235 | Geneva drive A mechanism for prepositioning the input shaft of a bidirectional Geneva drive to effect incremental rotation of the output shaft of the Geneva drive, upon rotation of the input shaft, at a predictable time. The Geneva drive has an input shaft rotatable i... | 08/19/1986 |
| 4572013 | Intermittent link mechanism In an intermittent link mechanism including a driven gear engageable with a drive gear to cause a predetermined changeover operation and including a recess partly breaking the tooth train of the driven gear to intermittently breaking the linkage with the ... | 02/25/1986 |
| 4571211 | Toy pull accessory for self-propelled toy vehicle A toy pull-sled accessory for a self-propelled toy vehicle is supported for towing on a play surface by a forward friction pad and freely rotatable rear wheels. Friction with the surface is increased by a weight with a pivotally depending pawl movable alo... | 02/18/1986 |
| 4476735 | Positioning apparatus A first member defines a plurality of depressions such as V-shaped notches therein and is positioned so that the V-shaped notches are adjacent another plurality of similar notches defined by a second member. The spacing of the recesses in the second membe... | 10/16/1984 |
| 4336870 | Torque exchange coupling A novel torque exchange coupling for transmitting rotational mechanical power is described. The coupling includes a torque receiving member, a torque transmitting member and means for conveying rotational mechanical power between the torque transmitting a... | 06/29/1982 |
| 4250761 | Rotary drive mechanisms In computerized tomographic apparatus having an intermittent rotational motion the scanning time can be reduced by increasing the rotation speed. However this can result in excessive forces being transmitted to the stationary mainframe of the equipment. T... | 02/17/1981 |
