Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 8062140 | Power transmission line section A power transmission section particularly adapted for use in a downhole drilling system. A drive shaft is pivotally connected to input and output end connection members with pivot balls therebetween to allow pivoting of the shaft ends relative to the input and outpu... | 11/22/2011 |
| 7165609 | Apparatus for handling tubular goods An apparatus for handling tubular goods which includes an elongate tubular body having a peripheral sidewall and opposed ends. The peripheral sidewall has a plurality of axial slots arranged circumferentially around the tubular body parallel to an axis of the tubula... | 01/23/2007 |
| 6962489 | Moineau pumping device having a ball coupling A pumping device is provided which comprises a Moineau pump with a helical rotor inside a helical cavity of a stator, driver means, and a drive connecting rod coupled by a respective coupling to a driving shaft of the driver and to one end of the rotor. Each couplin... | 11/08/2005 |
| 6945338 | Drilling bit assembly and apparatus A drill bit comprises a shank member (31), a bit body (32) provided with cutters (33) and flexible material (35) between the shank (31) and the bit body (32) allowing relative tilting movement therebetween to reduce adverse ... | 09/20/2005 |
| 6663493 | Coupling device A coupling device includes a transmission member and a work shaft. The transmission member includes a cylindrical rod to be coupled to a rotary drive unit, and a curved coupling flange projecting axially relative to one end of the cylindrical rod and form... | 12/16/2003 |
| 6012985 | Method and means for coupling shafts A coupler for coupling shafts has an inside coupling having an outer periphery and a center opening with a longitudinal axis which is adapted to receive the end of a driving shaft. An outside coupling has a center opening with an inner periphery, and is r... | 01/11/2000 |
| 5671816 | Swivel/tilting bit crown for earth-boring drills A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for ... | 09/30/1997 |
| 5591083 | Elastic shaft coupling To facilitate assembly of a shaft coupling, a sleeve is provided with a polygon configuration either on the hub or in the polygonal opening of the drive side flange and is axially slidable in the matching polygon. Where the sleeve surrounds the hub, it is... | 01/07/1997 |
| 5503236 | Swivel/tilting bit crown for earth-boring drills A drill bit for drilling subterranean formations includes a device to provide a "universal" effect between the shank and crown for self alignment of the crown with the bore hole in the formation. The bit is suitable for downhole assemblies configured for ... | 04/02/1996 |
| 5092821 | Drive system for impeller shafts A drive system for impeller shafts includes a coupling that has a universal joint that is lubricated under all operating conditions. A housing is connected to the universal joint, which housing includes a hollow end portion adapted to receive the non-thre... | 03/03/1992 |
| 4904228 | Universal ball joint An improved universal ball joint especially adapted to be used in the transmission of high torque, as in oil field use, includes a driving and driven shaft. One of the shafts, which may be the driving shaft includes a spherical ball received in a housing ... | 02/27/1990 |
| 4787878 | High torque cushion drive coupling A high torque cushion drive coupling has two half sections, each of which includes first and second jaw portions which are respectively bonded to a body of resilient material which fills the space between them.... | 11/29/1988 |
| 4772246 | Downhole motor drive shaft universal joint assembly A universal joint assembly comprises a first rotary member having a first longitudinal axis and an outer tubular portion at one end thereof concentrically disposed about the axis, a second rotary member having a second longitudinal axis and an inner tubul... | 09/20/1988 |
| 4768993 | Ball coupling A device for elastic interconnection of two rotatable shafts consisting of a first sleeve intended to be connected to a first shaft end. The sleeve has a radial flange and a cylindrical, annular portion connected to the periphery of the flange. A second s... | 09/06/1988 |
| 4744447 | Overload release clutch An overload release clutch to be mounted between rotary drive and driven members includes a recess formed on one member and a hole formed on the other member at a position axially corresponding to the recess, the recess being arcuate in the circumferentia... | 05/17/1988 |
| 4722716 | Universal joint A universal joint for drivably and flexibly coupling two shafts together. The universal includes a pair of body members for being removably connected to the shafts, a pair of arm members connected to and extending from each body member and connected to ea... | 02/02/1988 |
| 4636180 | Universal joint with stationary seats The universal joint (10) comprises a first shaft (12) with an annular head (14) having a cavity (16) therein and oppositely disposed seats (17, 19) about the perimeter of the cavity (16). The seats (17, 19) have inclined bottom surfaces (21) which displac... | 01/13/1987 |
| 4543076 | Universal joint A Universal joint comprising two joint coupling parts (1, 2) adapted to transmit rotary torque at a universal angle position of the two joint coupling parts (1, 2) thereby each of the two joint coupling parts are formed with a torque like claw the arms (5... | 09/24/1985 |
| 4518368 | Coupling An improved coupling comprises a driving member rotatable about a first axis, a driven member rotatable about a second axis and a plurality of intermediate floating members disposed between and coupling the driving and driven members so that the rotation ... | 05/21/1985 |
| 4357810 | Universal joint A homokinetic coupling with an inner ring contained within a groove-like ball race within the outer ring, and with a series of flattened balls therebetween for imparting rotation and transmitting forces, the balls being at least partially enclosed by a fl... | 11/09/1982 |
| 4322955 | Flexible coupling A flexible coupling having a rotatable drive and driven member. Each member has a pair of diametrically opposed lugs secured thereto. A floating member having four equally spaced peripheral grooves is disposed between the drive and driven member. Tilting ... | 04/06/1982 |
| 4317338 | Universal joint A universal joint for connecting a pair of elongated members is disclosed. The joint provides for transmission of torque between the pair of members when the pair of members are oriented at various angles relative to each other. One of the members termina... | 03/02/1982 |
| 4303004 | Snap ring assembly for two bodies For an assembly of two bodies wherein one of the bodies has a part-ball portion and the other has a part-ball formed hollow seat of complementary surface, a slot is provided in the body with the hollow portion and the ball formed portion of the other body... | 12/01/1981 |
| 4274268 | Universal joint A universal joint between a pair of members provides for transmitting torque between the pair of members when the pair of members are oriented at varying angles relative to each other. One of the members terminates in a cavity which is substantially cylin... | 06/23/1981 |
| 4172368 | Locking rotation-transmitting coupling A locking rotation-transmitting coupling comprises a nonrotatable member providing a housing having a cylindrical bore surface; a driven member having a hub portion that is, in cross-section, a regular polygon concentric to the bore axis, with axially ext... | 10/30/1979 |
| 4114404 | Universal joint Two rotatable shafts are drivingly connected by a torque transmitting mechanism. Each shaft has a groove, the grooves being disposed in a cooperative paired relationship. The grooves are adapted to at least partially contain the torque mechanism. A bearin... | 09/19/1978 |
| 4033145 | Constant angular velocity joint A constant angular velocity joint for the transmission of rotational movements between two shafts includes a pair of driving members, each coupled to a shaft, one driving member having a plurality of generally equally spaced pivot means connected obliquel... | 07/05/1977 |
| 4011737 | Device for fastening a wheel disc on a shaft A device for the torque-transmissive securing of a disc which is formed of a brittle material, in particular a turbine wheel constituted of a ceramic material, onto a shaft. The disc is centered through the intermediary of two cone pairs with axial prestr... | 03/15/1977 |
| 3942335 | Constant velocity universal joint A constant velocity universal joint for transmitting motion between two shafts which are intended to be run at an angle. An even number of spindles preferably equal to, or greater than, four are mounted on a hub member fixed to one of the shafts. Rollers ... | 03/09/1976 |
