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| Number | Title | Issue Date |
| 7922593 | Driveshaft assembly A driveshaft with a hollow shaft, a pair of caps and a universal joint. The hollow shaft is rotatable about an axis and has an annular wall member that defines an outer surface, an inner surface and a pair of opposite ends. At least one of the outer surface and the ... | 04/12/2011 |
| 7442127 | Propeller shaft and rotational power transmission mechanism equipped with this A propeller shaft PS1 comprises a front pipe member 10 and first and second yoke members 20 and 30, which are attached to both the ends of the front pipe member 10. The first yoke member 20 is attached by press-fitting a fir... | 10/28/2008 |
| 7427237 | Load sharing composite shaft A composite shaft for transmitting torsional forces between end pieces of the shaft. The shaft includes an inner tube member with an end piece mounted at each end of the tube. A composite material is provided covering the inner tube member and at least a portion of ... | 09/23/2008 |
| 7419435 | Composite torque tube captured end fitting A torque tube assembly includes a hollow composite member and an end fitting. The composite member has at least one end portion divided into a forward section and an aft section. The forward section is disposed adjacent a free end of the composite member. Each one o... | 09/02/2008 |
| 7361094 | Multi-part propeller shaft A multi-part propeller shaft for transmitting torque in the driveline of a motor vehicle. The shaft includes a first shaft portion (3) having a shaft tube (11) with an inner diameter (d), a second shaft portion (4) with an outer diameter (D) whi... | 04/22/2008 |
| 7361411 | Hardfacing alloy, methods, and products Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfaci... | 04/22/2008 |
| 7320381 | Propshafts with honeycomb core dampers A propshaft assembly includes a shaft structure having a hollow cavity and an insert member being positioned within the hollow cavity and engaging the shaft structure. The shaft structure vibrates in response to receipt of an input of a predetermined frequency such ... | 01/22/2008 |
| 7285052 | Intermediate shaft assembly An intermediate shaft assembly for an automotive transmission wherein hydraulic fluid intake ports in the rotating shaft assembly are designed to increase hydraulic fluid flow and improve lubrication to mating components served by the shaft lubrication circuit is di... | 10/23/2007 |
| 7275332 | Multi-axis positioning apparatus An apparatus for supporting a platform (84) relative to a base (82), has first, second, and third flexible shaft couplings (80). Each flexible shaft coupling (80) is mechanically coupled between the platform (84) and the base (8... | 10/02/2007 |
| 7255334 | Air suspension piston The invention relates to an air suspension piston, with the air suspension piston being tube shaped and being made of aluminium. The air suspension piston is formed by a longitudinal-seam welded tube made from an aluminum alloy, and the tube has been longitudinal-se... | 08/14/2007 |
| 7234223 | Method for forging/molding a coarse blank of an aluminum transmission shaft A method for forging/molding a coarse blank of an aluminum transmission shaft, including steps of: placing burn-in softened aluminum material into a preheated mold; using a first punch head to first forge the aluminum material in the mold cavity from outer side of t... | 06/26/2007 |
| 7204762 | Self dampening rotary shaft A rotary shaft may include a multi-piece liner for absorbing vibrations caused by rotational energy generated by the rear axle and/or clutch of a motor vehicle. ... | 04/17/2007 |
| 7204494 | Split stabilizer and process for establishing a toothed connection of the outer rotary part to one of the two stabilizer parts A connection of the stabilizer parts of a two-part stabilizer to an actuator is usually performed in a positive-locking manner, as a result of which an additional axial securing and hydraulic sealing toward the outside become necessary. To simplify the design and th... | 04/17/2007 |
| 7174958 | Drill string member A drill-string member includes at least one grooved portion on an outer surface thereof. A pair of axially spaced-apart grooved portions are typically provided, with two such pairs axially spaced along the longitudinal length of the member. A plurality of grooves ar... | 02/13/2007 |
| 7175532 | Energy absorbing propeller shaft system A dual-sectioned automotive propeller shaft features a weakened area in a first section. Under an axial load, the first section buckles transversely to a longitudinal axis of the shaft to absorb substantially all of the energy exerted against the shaft. A second sec... | 02/13/2007 |
| 7163462 | Propeller shaft assembly A propeller shaft assembly is provided that includes a shock absorbing section(s) that couples an outer shaft and an inner shaft that are mutually spline-engaged to be retractable with impact loads, wherein the shock absorbing section is constructed such that a supp... | 01/16/2007 |
| 7160195 | Propeller shaft assembly with tunable energy absorption feature A propeller shaft assembly includes an inner member having an outer surface with a plurality of splines defining a splined portion, and an outer member having an inner surface with a plurality of splines defining a splined portion. The splined portion of the inner m... | 01/09/2007 |
| 7152708 | Propshaft with improved crash-worthiness A frangible telescopic propeller shaft includes an elongated hollow cylindrical body, a reduced diameter intermediate portion along a length of the body, and at least one spin-formed transition area between the intermediate portion and the body. The transition area ... | 12/26/2006 |
| 7140800 | Joint structure for power transmitting member and method for producing the same A joint structure for a power transmitting member comprising a fiber rein forced plastic tube, a joint comprising a joint portion for joining to an end portion of the tube, and a sealing portion formed on an end of the tube side of the joint portion, wherein the joi... | 11/28/2006 |
| 7134964 | Propeller shaft assembly with stiffening feature A propeller shaft assembly includes a thin-walled tubular member, a connecting member fixed to each end of the tubular member, and a support member fixed within the tubular member. The support member includes a foamed plastic impregnated with a high modulus resin or... | 11/14/2006 |
| 7125053 | Pre-expanded connector for expandable downhole tubulars A method and apparatus for providing an expandable threaded connection between segments of expandable tubulars. Threaded connections are machined into pre-expanded ends of tubulars. Once the threaded connections are machined into the pre-expanded ends, two joints of... | 10/24/2006 |
| 7112141 | Power transmission shaft An integral hollow type power transmission shaft is proposed which is superior in the balance between the static strength and the fatigue strength. The integral hollow type shaft is induction-hardened from the outer periphery to form a hardened layer, leaving an unh... | 09/26/2006 |
| 7107950 | Variable valve actuating mechanism for internal combustion engine A lift and operating angle varying mechanism is arranged to vary an intake valve operation angle and an intake valve lift of the engine continuously by rotating a control shaft with an actuator disposed at an end of the control shaft which is rotatably supported by ... | 09/19/2006 |
| 7089728 | Single-piece turbine rotor and pinion gear and manufacturing technique for same A power transfer assembly comprises a power turbine constructed of a nickel alloy; a gear shaft constructed of a low-carbon carburized gear material; and a transition portion between and welded to each of the power turbine and gear shaft. The nickel alloy may be wel... | 08/15/2006 |
| 7083223 | Vehicle cab A vehicle cab having a frame construction including a pair of front supporting A-pillars, a pair of rear supporting B- or C-pillars, at least one front transverse beam, which mutually connects the front supporting A-pillars, and a rear transverse beam, which mutuall... | 08/01/2006 |
| 7080436 | Method of manufacturing an axially collapsible driveshaft A method for manufacturing a driveshaft for use in a vehicle drive train system that is axially collapsible in the event of a collision to absorb energy. A workpiece, such as a hollow cylindrical tube, is deformed by hydroforming to provide an axial collapse initiat... | 07/25/2006 |
| 7080437 | Method of manufacturing an axially collapsible driveshaft assembly To manufacture an axially collapsible driveshaft assembly, first and second tubular members are disposed in an axially overlapping relationship. Central portions of the concentric tubular members are then deformed into conformance with a die cavity having a non-circ... | 07/25/2006 |
| 7062835 | Joint structure for power transmitting member and method for producing the same A joint structure for a power transmitting member includes a fiber reinforced plastic and a joint. The joint includes a joint portion for joining to an end portion of the tube, and a sealing portion formed on an end of the tube side of the joint portion. The joint p... | 06/20/2006 |
| 7044229 | Downhole valve device A downhole valve device (1) in a drill string (14) in a petroleum well (2) and method for maintaining optimal annular fluid velocity and wellbore pressure. The device comprises a valve housing (20) connected between adjacent segments (... | 05/16/2006 |
| 7044216 | Large diameter flush-joint pipe handling system An elevator for assembling a plurality of a large diameter pipe joints into a pipe string with a drilling rig is disclosed. The first one of a number of large diameter pipe joints is adapted to threadingly engage another large diameter pipe joint. The elevator is de... | 05/16/2006 |
| 7040422 | Drill string member A drill string member is formed by providing a former and a cylindrical member to be shaped in relationship with the former. Seals are provided between opposing ends of a thick wall cylinder and the cylindrical member, a pressure is applied in the annulus between th... | 05/09/2006 |
| 7025686 | Axially collapsible driveshaft assembly A driveshaft assembly that is axially collapsible in a reliably controlled manner includes a male splined slip yoke that cooperates with a female splined transition member for concurrent rotational movement and for relative axial movement. The transition member is, ... | 04/11/2006 |
| 6997813 | Rotary shaft A crash optimized propeller shaft includes a swaged tube to connect ends having disparate diameters. The variable diameter tube creates a stress concentration zone which allows the shaft to collapse or buckle in a controlled and predictable manner in response to pre... | 02/14/2006 |
| 6986713 | Propeller shaft A propeller shaft assembly includes a thin-walled tubular member, a connecting member fixed to each end of the tubular member, and a support member fixed within the tubular member. The support member includes a plurality of radial elements extending a first length (... | 01/17/2006 |
| 6966746 | Bearing pressure balance apparatus The present invention provides a method and apparatus for balancing the pressure across a front bearing in a compressor housing. The present invention may protect the bearing from lubricant migration by eliminating pressure differentials across the bearing. When a b... | 11/22/2005 |
| 6959476 | Aluminum automotive drive shaft A method for producing aluminum drive shafts from molten aluminum alloy using a continuous caster to cast the alloy into a slab. The method comprises providing a molten aluminum alloy consisting essentially of 0.2 to 0.8 wt. % Si, 0.05 to 0.4 wt. % Cu, 0.45 to 1.2 w... | 11/01/2005 |
| 6918839 | Damage tolerant shaft The damage tolerant shaft and associated method of fabricating a damage tolerant shaft provide a drive shaft that is tolerant of accidental and projectile damage to a portion of the drive shaft. The damage tolerant drive shaft is designed with internal ribs or lobes... | 07/19/2005 |
| 6902495 | Golf club vibration dampening and sound attenuation system A golf club vibration dampening and sound attenuation system including an elongated shaft, a club head, a resilient insert assembly, a dampener, and a grip. The shaft has a distal shaft end and a proximal shaft end. The club head is coupled to the distal shaft end, ... | 06/07/2005 |
| 6896623 | Axially collapsible propeller shaft assembly An axially collapsible propeller shaft assembly, wherein the axial collapse feature resides in an axially collapsible drive connection between a stud shaft and a hollow propeller shaft, wherein under everyday drivingly conditions the drive connection provides torque... | 05/24/2005 |
| 6854436 | Composite push rod An adjustable length composite push rod constructed of a composite bar having two specially shaped ends to which metal end fittings bond via mating surfaces provided thereon for evenly distributing mechanical stress from the metal end fittings to the composite bar. ... | 02/15/2005 |
