974 results about "Split ring" patented technology

A device for brain stimulation includes a lead body having a longitudinal surface and a distal end. The device further includes at least one ring array. The at least one ring array includes a plurality of split ring electrodes disposed on the distal end of the lead body. Each of the plurality of split ring electrodes includes a stimulating portion and a base portion coupled to the stimulating portion. The split ring electrodes of the at least one ring array are arranged about the circumference of the lead body. At least a portion of the base portion of at least one of the plurality of split ring electrodes is disposed below, and insulated from, at least a portion of the stimulating portion of another of the plurality of split electrodes.

Methods and apparatus for mitral valve repair are disclosed herein where the posterior mitral leaflet is supported or buttressed in a frozen or immobile position to facilitate the proper coaptation of the leaflets. An implantable apparatus may be advanced and positioned intravascularly beneath the posterior leaflet of the mitral valve. The apparatus may include one or more individual balloon members, each of which may be optionally configured with supporting integrated structures. A magnet chain catheter may be positioned within the coronary sinus and adjacent to the mitral valve to magnetically secure the apparatus in position beneath the posterior mitral leaflet. Alternatively, a split-ring device may be placed about the chordae tendineae supporting the mitral valve such that the ring slides along the chordae tendineae alternately against the mitral leaflet and towards the papillary muscles during systole and diastole.

An adjustable spinal fixation system is composed of a collection of anchoring assemblies attached, via a variety of connectors, to spine-stabilizing rods. The anchoring assemblies include a linking member attached in a ball-and-socket fashion to a bone-engaging member that is adapted to engage a spinal bone of a patient. The linking member joins one of the included connectors to an associated bone-engaging member. The connectors are selectively attached to one of the stabilizing rods. The anchoring assemblies each include a support collar and a split retention ring that cooperate to allow adjustment of the bone-engaging member and corresponding connector during surgery. When surgery is complete, a securing nut and locking bolt cooperate with the support collar and split retention ring to maintain the relative position of the entire fixation system, preventing unwanted movement between the system components.

A poly-axial bone fastener assembly having a collar and a bone fastener can be coaxially locked to prevent poly-axial movements of the collar relative to the bone fastener while permitting the collar to rotate about an axis of the bone fastener, thereby combining the functions and advantages of a poly-axial bone screw and a fixed angle bone screw. Some embodiments of a coaxial locking mechanism may include a c-clip with a locking pin, a c-clip with hooks, a split ring with square corners, a pin that spins inside the collar, pins that travel about a neck of the bone fastener, a coaxially locking top that screws into the collar over a head of the bone fastener, and a top nut that threads onto the head of the bone fastener inside the collar to trap a flange of the collar between a shoulder of the bone fastener and the top nut.

A baseball batter's helmet includes a shell; a protective padding including crown and arcuate pads; an adjustment assembly including a split ring including two elongate end openings, a first toothed section formed on a top edge of one opening, a second toothed section formed on a bottom edge of the other opening, a rear plate including a recess having a toothed member and a transverse channel with the openings inserted thereinto to form a crossing relationship, a disk including a gear meshed with the toothed sections, and two opposite hooks engaged with the toothed member, and a rotatory knob mounted on the shell and secured to the disk, the split ring, and the rear plate; and a knob protector. Clockwise turning the knob to cause the openings to move toward each other by activating the gear mechanism will tighten the crown pad to decrease a diameter of the arcuate pad.

An implant, particularly for the spinal column, comprises a plate having openings, bone-anchoring members capable of being accommodated in the openings and at least one split-ring capable of holding the members in the orifices. The split-ring can come into direct contact with the anchoring member or members to hold the member or members in the orifices.

A connection assembly between a spinal implant rod and a vertebral anchor. The assembly has a split ring, a clamp, a collet and optionally a nut. The split ring is located inside the clamp and the collet is inserted through each of the clamp's arms. In use, the spinal implant rod is placed inside the split ring and the shaft or shank of the vertebral anchor is placed inside the collet. Drawing the arms of the clamp together then tightens the connection assembly, which closes the collet around the vertebral anchor and closes the split ring around the implant rod. Threading a nut on one end of the collet or directly threading the collet into one of the arms of the clamp tightens the assembly.

A vertebral plate system and associated method minimizes the number of required multiple configurations and sizes of hardware on hand during surgery for repair, stabilization or fusion of bone segments. A novel aspect of the invention is a resilient split ring that cooperates with angled contact surfaces in a plate for allowing convenient and fast dynamic locking between the plate and a bone screw. In another aspect of the present invention, a screw or similarly elongated fastener having a generally spherical or part-spherical head with a section of helical threads is configured in a generally horizontal band and positioned around a maximum-diameter section of the head. The screw is loosely retained to a first structure by a snap-ring formed from a ring of elastic material having a slot cut so that the ring is a “C” ring. The ring is seated on an annular shoulder formed in a through-hole in the first structure. The section of the through-hole above the shoulder tapers inwardly in an upward direction to a minimum diameter that is smaller than the outside diameter of the ring when the ring is in an unstressed state. The inner diameter of the ring has an edge that is adapted to cooperate with and ride in the threads on the screw head.

A device for use with an ammunition reloading press, the device uses a “C” shaped split ring that is captured within a chamber with a slightly tapered frustaconical wall into the smaller end of which the bullet portion of an ammunition round can be inserted to a point where the bullet enters the C ring with a friction fit and subsequent withdrawal of the ammunition cartridge by operation of the press draws the ring into the increasingly narrow wall, decreasing the diameter of the ring and forcing a tighter grip on the bullet, which is then separated from the cartridge by further withdrawal and is removable from the device through an opening at the larger end of the chamber.

An ultrasonic flow meter permitting easy insertion and removal of a tube or conduit. A partial ring transducer or partial cylinder transducer is used to permit easy insertion and removal of a flexible tube in an ultrasonic flow meter for measuring fluid flow. In another embodiment a split ring or split cylinder transducer is used to facilitate easy removal and insertion of a tube or conduit in which fluid flow is to be measured. In another embodiment a clamping system is used to securely hold and couple a tube or conduit within the ultrasonic flow meter system. The present invention is conveniently adapted to hold flexible tubes and in particular disposable flexible tubes often used in the medical industry.

An electrical fitting in the form of a connector or coupler for connecting an electric metal tube to an electrical box or panel or to one another. The fitting includes a body having an inlet end portion, an outlet end portion and a bore extending therethrough. An unidirectional locking device is disposed in an outermost chamber and a sealing washer disposed in an intermediate chamber. A split ring having an angularly bent leading end is provided with a series of offset circumferentially spaced unidirectional gripping tangs. The locking device may also be provided with a series of tube support tangs at the trailing end. Also, the locking device includes a tang forming an electrical bonding or ground between tubes, locking device and connector body.

A flashlight includes a light emitting diode, power source, momentary contact switch for activating the flashlight, and a split-ring clip for attachment to key-rings, baggage, and various articles of clothing. The momentary contact switch may be activated manually or when the flashlight is selectively inserted into a carrier that releasably retains the flashlight on an article of clothing or other support.

A cable-supporting apparatus. One embodiment of the invention includes a rigid support member that may be attached to a framework that supports one or more components. At least one cable support member is attached to the rigid support member for receiving a portion of at least one cable therethrough. The cable support members may comprise split rings that each defines central cable-receiving area that is surrounded by rigid portions of the split ring.

An implant, particularly for the spinal column, comprises a plate having openings, bone-anchoring members capable of being accommodated in the openings and at least one split-ring capable of holding the members in the orifices. The split-ring can come into direct contact with the anchoring member or members to hold the member or members in the orifices.

A cable-supporting apparatus is disclosed. One embodiment of the invention includes a rigid support member that may be attached to a framework that supports one or more components. At least one cable support member is attached to the rigid support member for receiving a portion of at least one cable therethrough. The cable support members may comprise split rings that each define central cable-receiving area that is surrounded by rigid portions of the split ring.

The invention discloses a rotary screw drill tool used in fields of petroleum drilling and the like and solves the problem about crushing efficiency of hard rocks in extradeep wells. The technical scheme includes that a bypass valve shell, a fall prevention joint, a motor shell, a universal shaft shell, an outer shell, a bearing shell, an outer cam shell, a bottom piston shell and a lower shell are sequentially connected through screw threads; an upper shaft and a lower shaft are connected through a spline, and eight spline pins are evenly and circumferentially distributed between the upper shaft and the lower shaft; a roller holder is fixed on the outer cam shell through three bolts which are circumferentially and evenly distributed, a cam is circumferentially fixed on the cam bushing through three evenly distributed bolts, a roller is mounted on a roller holder, the cam bushing is connected to the lower shaft in a threaded manner, and a lower split ring is clamped in the lower shaft through a serrated trough and is fixed through a lower retaining ring. By the arrangement, the lower shaft of the screw drill tool is enabled to generate soft axial impact with a certain frequency and stable in size, efficiency of rock breaking of a drill is improved, mechanical drilling rate is increased, and drilling cost is thereby lowered.

A wind screen device for an outdoor grill is provided, which comprises a horizontal bottom plate and a series of vertical side plates. The vertical side plates contact each other and the bottom plate to form an enclosure or windscreen. The enclosure is capable of housing a variety of types and sizes of outdoor cooking units, thereby screening out the wind from the outdoor cooking unit. The rigid plates are hooked together by split rings, which are threaded through slotted holes located near the edges of the plates. The side plates are held in place by angled clips when the windscreen device is assembled. The side plates are also capable of being alternately folded down with all of the plates stacked together for storage. The windscreen device includes an additional opening in one of its side plates, which is designed to admit a gas hose therethrough.

A heart valve stiffening ring of this disclosure includes a split ring that allows assembly over a channel-shaped heart-valve-orifice-forming angular heart valve body, with the split ring having an outer peripheral tapered thread, which allows adjustment of pressure between the split ring and the orifice-forming annular body. A solid ring or nut has complementary tapered threads to mate with the outer peripheral tapered thread of the split ring and is adjustable for tightening of interfit thereof to bring about correct pressure for desired tightening effect with a moment of inertia in bending of the outer channel to make the orifice stronger so that orifice outer diameter thereof can be a maximum value. The angle of taper is substantially 3 degrees with respect to the center line. This heart valve stiffening ring can be employed in place of a heart valve locking ring of U.S. Design Pat. No. 376,206-Reif issued Dec. 3, 1996. Improvement of the present design includes a major feature or crux that the split ring and solid ring or nut both have complementary threads that fit together and using the flanges of the channel configuration used therewith.

A rotary tube furnace suitable for operation in controlled atmospheres at temperatures in the range of 1500 DEG to 2800 DEG comprises a generally horizontal rotatable graphite tube slidably supported on water-cooled split ring graphite bearings. The graphite tube is rotated by means of a stainless steel drive plate and is contained within a flexible atmospheric sealing assembly and enclosure for the containment of a selected atmosphere around and within the tube and allows for the co-current or counter-current flow of gas during operation. Radiation baffles in the interior of the graphite tube inhibit radiant heat loss at the ends of the tube. The graphite tube may be constructed in two or more sections having threaded ends for ease of installation as well as removal or replacement for maintenance purposes. A heating section of the tube is heated by a plurality of graphite electrical heating elements contained within an insulated heating chamber.

The wear sleeve in the present invention comprises a rearward split ring portion and an intermediate cylindrical ring portion adjacent a forward shoulder portion. The outer diameter of the wear sleeve intermediate portion and rearward split ring portion is uniform. The wear sleeve is inserted into the bit holder's stepped bore aperture. The split ring portion is radially compressed by the smaller diameter opposite portion end as the sleeve is hammered and axially displaced into the bit holder. The split ring portion forms frictional contact with the opposite end portion of the aperture. The wear sleeve friction fit can be easily removed manually in the field. The bit holder and cooperating support block are designed to limit the amount of relative yaw between the two members during operation to reduce the overall wear there between. The invention includes a groove having side surfaces that are inclined at least 15 degrees with respect to the horizontal axis and the cutting bit is positioned more apt toward the central axis of the support block than prior art designs.

Methods and devices are for providing the delivery of radioactive therapeutics to a cervix using a split ring applicator. The split ring applicator includes a central tandem and a plurality of adjustable split ring tubes that are adjustable laterally in relation to a cervical axis. A radiation dosage is deliverable to a cervical wall by at least one of the plurality of adjustable split ring tubes.

A hanger mounted within a bore of a tubular string component has a split ring, a tapered key and a passageway formed in the hanger. The split ring has interfacial surfaces cooperating with interfacial surfaces of the tapered key. The bore may be located within a tubular string component selected from pipe, drill pipe, doubled shouldered pipe, single shouldered pipe, drill collars, reamers, production pipe, composite pipe, well casing, risers, underground utility lines, rotors, positive displacement rotors, jars, shock absorbers, heavy weight drill pipe, hammers, and turbines. A conduit or electronic equipment may be disposed within the passageway. The passageway may be formed in the tapered key or in the split ring. A transmission element may also be disposed within a groove formed in the hanger.

A holder for a razor or similarly shaped article has a suction cup and a split ring or a stem held within at least one bore through the neck of the suction cup. The bore and the ends of the split ring or stem have a multi-sided, preferable a square, cross section. Each side aligns with and is opposite a side of the bore keeping the split ring or stem in a selected position relative to the suction cup. When a square bore is used, the ring can be rotated 90 degrees within the bore from a plane parallel to a wall on which the suction cup could be mounted to a plane perpendicular to that wall. When a razor is placed within the ring when the ring is perpendicular to the wall, the ring will not be deflected downward.

A variable geometry vane for use in a turbine engine. The vane can be radially mounted in a shroud ring while outside the turbine engine. The shroud and vane assembly can then be mounted to an engine hub without disassembly of the shroud, eliminating the need for a split ring shroud. Once located surrounding the hub, vanes are slid radially inward until a radially inward vane button engages a hole within the hub. Vanes are locked in place using clips slid into slots within the shroud. The clips are retained in place using an adjacent engine part bolted to the face of the shroud. Once in place within the engine, vanes are attached to a control arm for airflow adjustment.

A degradable downhole isolation tool for use in hydrocarbon well completion. The tool sets and isolates zones for fracking, and then degrades without leaving residual parts and without milling or introducing a new degrading fluid. The plug's mandrel and other parts are a solid polymer which hydrolyzes in aqueous downhole fluid to produce an acid which degrades degradable metal slips and other metal parts. The plug's seal may be degradable metal pedals or split rings. The plug is delivered to the well site as an interchangeable parts kit for adaption to the well's requirements.

Apparatus for cleaning the inner wall of wellbore tubulars, and for capturing downhole debris in the wellbore An elongated, tubular central mandrel has threaded connections on either end for makeup into a tubular string The mandrel has recesses on its outer circumference into which split rings are mounted Various service elements are then attachable to the central mandrel, by sliding them over the mandrel and holding them in place with stabilizer elements which connect to the split rings Different embodiments of the service elements include a brush assembly, a junk basket, and a magnet The stabilizer elements may be mounted onto the split rings so as to either be rotationally locked with respect to the mandrel, or so as to be capable of rotating with respect to the mandrel, since the service elements are held in place on the central mandrel by the stabilizer elements.

A valve assembly, and related system and method, with a sleeve having an inner surface with a diameter, an outer surface, and a plurality of openings extending between the inner surface and the outer surface. A split ring having one or more segments and an expandable or collapsible body with a seating surface and an outer diameter extending from the body is at least partially within the inner surface of the sleeve. The split ring and sleeve may be placed in a variable diameter housing such that contact of the outer diameter with a smaller diameter section of the housing causes the split ring to close, whereas contact with an larger diameter of the housing allows the split ring to open. In certain embodiments, a spring element, which may be the split ring itself, applies force to move the split ring from an open to closed position. A spring may be positioned around a portion of the sleeve and in an annular space at least partially defined by an annular body and the second cylindrical outer surface.