Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7337685 | Adjustable device An adjustable device is disclosed comprising two relatively re-orientatable members each having a lockable universal joint, and a connecting member for connecting the two relatively re-orientatable members whereby when the two relatively re-orientatable members are ... | 03/04/2008 |
| 7171870 | Geared fluid drive with parallel start-up capability In a system in which a large motor, to be energized from a power grid, is connected to drive a main fluid drive through a main impeller shaft that has a main impeller shaft gear mounted on it, a relatively small start-up motor is provided, driving a start-up fluid d... | 02/06/2007 |
| 7156628 | Wobblestick with helix A wobblestick with driving teeth with a helix which is equal to or less than 1° of the running angle of the wobblestick. ... | 01/02/2007 |
| 7026736 | Turbine generator vibration damper system The invention relates to the vibration damper systems (here, method and apparatus) for active removal of beyond-normal internal vibrations from turbine-generator-sets [T-G-Ss*]. The invention relies on dynamic forces generated by a pair of “wings” and associated... | 04/11/2006 |
| 6524191 | Inverted coupling assembly An inverted coupling for transmitting power between the shafts of an electric motor and a gear box pinion includes sleeve ring gears mounted on the respective shafts for rotation therewith and each sleeve ring gear having internal gear teeth that intermes... | 02/25/2003 |
| 6203439 | Hydraulic machine A hydraulic machine with an orbiting displacement element connected unrotatably with an output shaft via an intermediary shaft, the intermediary shaft having at least at one end an external toothing, which engages an internal toothing, which permits a swi... | 03/20/2001 |
| 6152826 | Impact universal joint An impact universal joint has a socket which receives a swivel head. A flat leaf spring with dependent members is connected to the upper face of the socket. The swivel head is substantially a sphere with spaced-apart lugs formed around a circumference of ... | 11/28/2000 |
| 5860864 | Joint assembly having self-biasing mechanism to bias two shafts into coaxial alignment A joint assembly for connecting two spaced drive shafts, such as in a submergible pumping system. The joint assembly comprises a connecting shaft having enlarged bodies on each end thereof, a housing surrounding each enlarged body, each housing connectabl... | 01/19/1999 |
| 5505662 | Quick disconnect In a quick disconnect between a driving shaft and a driven shaft, in which a first annular bracket is mounted on an end of the driving shaft and a second annular bracket is mounted on an end of the driven shaft facing the first bracket but spaced substant... | 04/09/1996 |
| 5393267 | Adjustable coupled drive shaft with a restraining ring A coupling for driving and driven shafts has a first sleeve mounted for axial sliding on the curved teeth of a spool sleeve to accomodate variation of distances between such shafts; oil dam rings are located to provide abutment stops to prevent axial shif... | 02/28/1995 |
| 5356342 | Teeth for a wobblestick A wobblestick for forming teeth on a wobblestick wherein the minimum distance between the axis of the hob and the axis of the wobblestick remain substantially uniform throughout the forming of the teeth so as to form the teeth while producing a wobblestic... | 10/18/1994 |
| 5226350 | Drive train assembly for a rotor assembly having ducted, coaxial counter-rotating rotors A drive train assembly for a rotor assembly having ducted, coaxial counter-rotating rotors includes a sprag clutch, an engine coupling subassembly, a transmission coupling subassembly, and a drive shaft mechanically interconnected at the ends thereof to t... | 07/13/1993 |
| 4990121 | Rolling mill drive having a spindle with curved toothing A rolling mill drive with axially slidable spindles arranged between drive shafts and drive rolls, particularly between driven necks of pinions and drive necks of rolls. The spindle heads of each spindle are each provided with a wobbler with a curved toot... | 02/05/1991 |
| 4976655 | Connecting rod assembly for downhole drilling A connecting rod assembly used in downhole drilling that has an articulated coupling secured to each end of a rigid connecting rod. This assembly connects via the articulated couplings, to axially misaligned shafts and transfers both rotational and axial ... | 12/11/1990 |
| 4934216 | Four speed inline transmission overdrive A hydrokinetic multiple ratio transmission having a compound planetary gearset with clutches and brakes that are selectively engageable and released to establish two underdrive ratios, a direct drive ratio and an overdrive ratio, as well as a reverse rati... | 06/19/1990 |
| 4704096 | Crowned splines and defination of root radius therefor A drive shaft (41) is disclosed of the type having first and second sets of axially-disposed external crowned splines (39 and 43) for transmitting torque between first and second sets of internal straight splines (37 and 45). The sets of internal straight... | 11/03/1987 |
| 4650428 | Marine propulsion device with floating drive shaft A marine propulsion device comprising a mounting bracket adapted to be mounted on the transom of a boat, and a propulsion unit pivotally mounted on the mounting bracket for pivotal movement relative to the mounting bracket about a generally vertical steer... | 03/17/1987 |
| 4530674 | Coupling arrangement for driving and driven members A coupling shaft couples driving and driven shafts which are subject to relative misalignment. The coupling shaft has crowned male polygonal profiles on both of its ends, and which ends mate directly with corresponding female polygonal profiles carried by... | 07/23/1985 |
| 4493622 | Variable displacement motor A hydraulic motor which varies its displacement in accordance with varying torque loads on its output shaft. The motor is biased to a low displacement, low torque, high speed mode, and changes to a high displacement, high torque, low speed mode when the t... | 01/15/1985 |
| 4472160 | Hub retention device An improved hub retention device for retaining the coupling hub in proper position on the shaft of a spindle coupling when the roll ends are removed from the coupling sleeve. The hub retention device is comprised of a split-ring member fitted in a circumf... | 09/18/1984 |
| 4443205 | Gear type shaft coupling A gear coupling for a pair of rotatable shafts disposed in end-to-end relation, in which a pair of hubs is mounted on the shafts and sleeves are secured to the inboard side of the hubs and contain internal teeth. A spacer extends between the two sleeves a... | 04/17/1984 |
| 4370869 | Gear-type universal coupling The invention contemplates a universal coupling wherein rotatable input and output members are coupled both (1) for universal flexible accommodation of the instantaneous angular orientation (misalignment) of their rotary axes about a single point of axis ... | 02/01/1983 |
| 4335963 | Output coupling for concrete mixer transmission One end of a rotatable mixer drum is journalled by a spherical bearing mounted on the housing of a power transmission having its rotary output coupled to the drum by a drive shaft which axially penetrates the bearing. Arcuate splines at opposite ends of t... | 06/22/1982 |
| 4274827 | Propulsion system for a marine vessel A propulsion system including a steerable propeller which can be vertically lowered out of and raised into a vertical protecting sleeve is disclosed. The propeller is driven from a motor lying above deck of a ship driven by the propeller and a shaft conne... | 06/23/1981 |
| 4198832 | Flexible drive coupling An improved flexible drive coupling is provided in which a driver and driven mechanisms are in adjacent housings that are fixedly connected by a shroud through which the drive coupling extends. The driver and driven gear hubs, respectively, are interconne... | 04/22/1980 |
| 4164855 | Segmented driving shaft Disclosed is an improved segmented driving shaft in which the torque is transmitted from roll segment to roll segment through flexible gear-type couplings. The shaft includes a plurality of alignment tubes which reduces the angle of misalignment of the ge... | 08/21/1979 |
| 4141225 | Articulated, flexible shaft assembly with axially lockable universal joint An articulated shaft assembly particularly useful in forming a flexible drill for drilling vertical holes in a mine shaft roof employs interengaging shaft sections whose opposed ends form a ball and socket mating surface connection with a plurality of dri... | 02/27/1979 |
| 4132090 | Crowned involute splines and method of making An improved drive shaft is disclosed of the type used in a rotary fluid pressure device including an input-output shaft and a gerotor gear set having an externally toothed member which orbits and rotates within an internally toothed member. Both the input... | 01/02/1979 |
| 3973880 | Drive connection means for a hydraulic device Axial, positioning means are provided in a hydraulic device of the gerotor type to prevent failure of splined drive connections. The drive connections for the device includes a star member of the gerotor set which partakes of hypocycloidal movement and ha... | 08/10/1976 |
| 3940946 | Universal joint A universal joint includes a drive member and a driven member. One of the members includes a curved polyhedron and the other of the members includes a socket for receiving the curved polyhedron with an interference fit. The improvement comprises the curve... | 03/02/1976 |
| 3938398 | Torque-transmitting devices A torque transmitting devices has an input shaft having two axially-spaced sets of external splines. Two internally splined members are threadedly interengaged and respectively engage the spline sets on the shaft. The angular positions of the members are ... | 02/17/1976 |
