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7395855 |
Slips ( 1, 21, 41 ) for engaging any jointed, coiled or flexible tubular with substantially no scoring, gouging or scraping, such as when supporting a drill string in a borehole or gripping a tubular ( 2, 22 ) during the connection or di...
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7392886 |
The invention relates to a clamping and/or braking device with a base element ( 7 ) and a force-applying element ( 17 ), by means of which the generated clamping and/or braking forces can be transferred to an object ( 39 ), as well as at...
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7350628 |
A spring system for relatively displacing elements attached to end mounts of the spring system. The spring system includes a housing having an axis, an internal chamber, and axially opposite bottom and top ends, a spring rod coaxial with...
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7344005 |
A self locking apparatus is disclosed having a housing, a load initiating element located within the housing, a spring located adjacent to the load initiating element and configured to expand in compression against the housing in respons...
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7322451 |
A friction damper includes a base body; a support secured to an elongated member of the base body and having a through hole; a rod which extends in such a manner as to pass through the through hole of the support and is movable in an axi...
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7188793 |
A spool control unit includes a circuit board, a plurality of electric components, an external device connector, and an insulating film. The circuit board includes a printed circuit on a surface thereof. The plurality of electric compone...
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7178639 |
A device is provided for clamping a loaded rod ( 2 ) with at least one clamping element ( 3 ), which is movably mounted on its conical outer periphery in a corresponding conical outer ring ( 4 ). The outer ring ( 4 ) is thereby axially m...
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7156590 |
A quill lock assembly for locking a quill of a device such as a drill press is described. The quill lock assembly includes a cam assembly and a handle connected to the cam assembly. The cam assembly is connected to the device, such as wi...
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7140477 |
A parking brake for a rail vehicle can automatically lock the rail vehicle brakes in an applied position, such as by clamping the brake cylinder push rod to prevent retraction from an applied position to a release position. An actuator c...
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7134531 |
A tubular handling device. The device includes a plurality of slips, and wherein the slips have an arcuate inner face that has a longitudinally disposed slot and a ledge therein. The device further comprises an insert having a shoulder t...
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7131518 |
A motion controller for use with a rod ( 10 A, 10 B, 10 C) has a backlash reducer ( 88 A, 88 B, 88 C) that substantially reduces or eliminates the space created after manufacturing parts with specified tolerance dimensions to substan...
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7108108 |
A device for clamping a rod to stop axial and/or rotative movement between the rod and the device. The device includes pressure and clamp units, the clamp unit having a bushing fixed therein and provided with a radially resilient center ...
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7097011 |
The present invention concerns a parking lock for combination with a service brake actuator for a vehicle, preferably a heavy road vehicle. The service brake actuator comprises a fluid actuated piston having a piston rod. The parking loc...
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7051843 |
In a friction brake arrangement with emergency braking functions for use with a carriage supported on a guide track, with a friction clamping structure including a friction shoe supported in a housing so as to be disposed adjacent the gu...
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7048271 |
A sheet separator for an automatic document feeder of the invention is capable of separating an outmost sheet from a stack. The separator includes a separating roller driven by a driving device, a friction roller, a first shaft, and a fo...
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7032690 |
An insert bowl, bushing, or spider includes a bowl having a central bore defined by an inner surface having an upper tapered section for engaging slips supporting a work string and a lower section. A wear indicator, such as a groove or s...
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6971720 |
A linear recliner assembly is provided having a recliner rod slidably supported within a housing. The recliner rod is selectively engageable with a pawl which is fixed within the housing. The recliner rod is in contact with a cam which i...
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6907961 |
A rod brake, and a method, including an elastic device, such as a coil spring, array of split rings, or an elastic sleeve, that engages one or more grooves in a cylindrical surface to restrain the rod from longitudinal movement relative ...
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6786270 |
A lift lock for blind is disclosed to include a shaft pivoted to a headrail of a blind for synchronous rotation with a lift rod of the blind. The shaft has a constraint device. A switching mechanism is mounted inside the headrail of the ...
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6698967 |
A device ( 10 ) for length adjustment has a bar-shaped component ( 12 ) with an external profiling ( 14 ) which is received in a receptacle ( 16 ) of a base body ( 18 ). The base body ( 18 ) has at least one profiled segment ( 22, 24 ) w...
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6688646 |
A vehicle seat belt system, in particular a three-point seat belt system, has belt webbing and an end fitting by which an end of the belt webbing is secured to a vehicle. A belt tensioner acts with a pulling eyebolt through which the bel...
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6681904 |
A golf cart anti-theft device for locking the brake pedal in the depressed position includes a solenoid member with an extrudable shaft and wedge that is wired into the keyed vehicle on-off switch electrical circuit. When the key is on, ...
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6655741 |
A linear recliner assembly is provided having a recliner rod slidably supported within a housing. The recliner rod is selectively engageable with a pawl which is fixed within the housing. The recliner rod is in contact with a cam which i...
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6640939 |
An improved snubbing unit including a snubbing unit base, a lifting assembly having a platform positioned above the base, a rotary table positioned on the snubbing unit, and a first slip assembly positioned on the rotary table. The first...
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6631792 |
An improved slip assembly having a base and at least two opposing slip frames positioned on the base with each of the slip frames including a planar slip surface. Additionally, a die is carrier positioned within each of the slip frames a...
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6598713 |
A hydraulic intensifier generates a hydraulic pressure which is higher than the input hydraulic pressure generated in the discharge port and the outer periphery hydraulic pressure chamber. The hydraulic intensifier, provided inside a cas...
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6564911 |
The invention relates to a braking assembly for permitting axial rotation of a shaft in a first direction and inhibiting axial rotation of the shaft in a second, opposite direction, comprising: a hydraulic clutch having a torque generati...
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6543546 |
A pair of ram blocks are provided such that when they are actuated hydraulically to move together, they present an opening which has a series of gripping members downwardly biased. Removal of tubulars or tools from the well bore works ag...
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6511255 |
The invention relates to a fixing device, comprising two clamping jaws ( 33 ) arranged symmetrically to each other and each having a through hole ( 38 ) for a rod ( 12 ) or shaft passing through same, and an actuating piston ( 27 ) which...
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6499568 |
A locking device for a movement unit supported displaceably relative to and along a longitudinal axis of at least one guide rod, comprises a pair of clamping members which have each a clamping opening. Each clamping opening has an inner ...
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6494298 |
A brake apparatus engages and locks a piston of a hydraulic elevator drive carrying an elevator car or a cable pulley. The brake apparatus includes a pair of opposed pivotally mounted brake arms each having a curved support carrying a br...
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6484963 |
A winding frame is provided which is swingably mountable on a machine frame and operable to support a rotatably driveable winding core for the winding of a filament thereon. The winding frame includes a damping apparatus for opposing uns...
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6478123 |
A brake for a plunger of a hydraulic elevator is provided which in a preferred embodiment includes a pressure plate, a first brake ring, a wedge plate, a biasing spring and a fluid release actuator. The pressure plate is movable along an...
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6474899 |
Device for locking in position linear elements movable translationwise such as rods ( 51 ) of cylinders ( 50 ) and the like, comprising an external body ( 11 ) provided internally with a chamber ( 13 ) housing elements ( 21 ) for locking...
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6450385 |
The invention concerns an annular clamping ring in particular for laying oil ducts including a rigid annular base ( 2 ) supporting with support apparatus a coaxial ring-shaped assembly of vertical jaws ( 4 ) mobile in the diametral plane...
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6446769 |
The invention relates to braking apparatus for a linear motor driven load, where the motor comprises a source of electrical energy, a bed having a braking surface, and a load carrying member operably interconnected to the bed for relativ...
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6394201 |
A tubing spider includes a rigid support frame having a plurality of support posts and an upper and lower support ring separated by said support posts, a pyramidal frustum formed by a plurality of inclined planes rigidly attached to the ...
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6371254 |
An arrestor for any hydraulic ram or other cylinder but primarily for an emergency brake for lifting elevators. The present invention is a jack arrestor utilizing two lever acting brake arms lined with an accretable metal as the friction...
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6325188 |
A linear motion damping device comprises a cylindrical body having a receiving compartment and an axial hole, in which a dragging rod is slidably disposed such that the threaded portion of the dragging rod is engaged with a fastening mem...
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6324935 |
A vehicle steering assembly includes a mounting bracket for the steering column, such that during a crash situation friction surfaces on the steering column slides through an opening in a plastic block carried by the mounting bracket. Th...
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6276719 |
A locking device for releasably securing an adjustable steering column to a motor-vehicle body. The locking device comprises two locking elements where one of the two locking elements is attached to the steering column and the other is a...
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6253881 |
An adjustment device for an item of furniture comprises two relatively mutually movable parts of which the one is elongate, cylindrical and longitudinally displaceable in relation to the other. A helical spring is disposed with pretensio...
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6241062 |
The invention relates to the field of damping in load-carrying members, particularly those load-carrying members that carry a load between a plurality of masses that are subject to induced cyclic distortion or vibration. According to an ...
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6237433 |
An electromechanical actuator comprising a screw that is driven in rotation, a nut that is driven in translation by rotation of the screw, and a guide rod which is driven in translation by the nut, the actuator having a plurality of roll...
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6227587 |
A combined well casing spider and elevator has a body defining a bowl inner wall tapered to reduced diameter from the top to bottom end and defining first external guide surfaces being inclined upwardly and outwardly and having a kicker ...
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6206145 |
A brake apparatus engages and locks a piston of a hydraulic elevator drive carrying an elevator car or a cable pulley. Attached at the upper end of a hydraulic cylinder guiding the piston is a beam on which are pivotally mounted at least...
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6192981 |
A coiled tubing hanger assembly for supporting coiled tubing in a well including, as a first element, a mechanically-assisted slip assembly characterized by multiple slip segments inserted in a tapered slip bowl located in the midsection...
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6179094 |
A brake for a plunger of a hydraulic elevator is provided which in a preferred embodiment includes a pressure plate, a first brake ring, a wedge plate, a biasing spring and a fluid release actuator. The pressure plate is movable along an...
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6176639 |
A fixing device, for fixing a linearly displaceable machine part relative to a fixedly supported machine part, has a guiding block (11), a bar member passing through the guiding block (11) in a bar guiding mechanism (14). The guiding blo...
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6164419 |
The mechanical lock includes a rod having one end extending into a housing and another end extending out of the housing. The rod translate through bores through bushings within the housing. Coil springs in the housing and surround the ro...
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