2407 results about "Conoid" patented technology

Disclosed are a variety of arcuate-shaped inserts for drill bits, and in particular, for placement in rolling cone cutters of drill bits. The arcuate inserts include 360° or ring-shaped inserts, as well as inserts of smaller arcuate length. The arcuate inserts are suitable for use in all surfaces of the rolling cone cutter, and in other locations in drill bits, and may have specialized cutting surfaces and material enhancements to enhance their cutting duty performance. Certain arcuate inserts may include stress relieving discontinuities such that, upon assembly into the cone or during drilling, the arcuate inserts may fragment in a controlled and predicted manner into shorter arcuate lengths.

An electromagnetic surgical ablation probe having a conical hood reflector and method of manufacture thereof is disclosed. The disclosed probe includes a shaft assembly that has a coaxial feedline core having an inner conductor and an outer conductor separated by an insulating layer. A tubular catheter is disposed coaxially around the feedline and is configured to deliver coolant, such as saline or deionized water, to a coolant chamber at a distal end formed within the conical reflector. A radiating section disposed within the conical reflector may have a conical, cylindrical, or other suitable shape. A membrane disposed across a distal opening of the conical reflector seals coolant within the coolant chamber, and may conform to tissue contours during use. A resilient aperture may be included at the periphery of the conical hood. The shaft assembly may include an angled section, an adjustable section, and, additionally or alternatively, a malleable section.

A cutting tool has a centrally located tungsten carbide insert brazed into a seat at the forward end of the tool. The seat has a circular mouth and rearward of the mouth is a frustoconical inner wall. At the bottom of the seat is a transverse surface. A tungsten carbide insert is brazed into the seat and the base of the insert is complementary in shape to the seat. A second annular insert may also be brazed into a complementary shaped annular seat that surrounds the centrally located seat.

The present invention generally provides an insulating vessel for beverages. The vessel has an outsert and a insert. The insert is positioned within the cavity of the outsert. In one embodiment the insert has a plurality of insulating members that are spaced from an inner surface of the outsert to define a series of air gaps between an outer surface of the insulating members and the inner surface of the outsert. In another embodiment, the insert and outsert have generally conical side walls with substantially the same taper angle so as to be in a friction lock relationship with one another.

A trocar is disclosed which comprises a body assembly and a cannula assembly attached to the body assembly to define a bore therethrough. The disclosed trocar also includes an obturator assembly for sliding engagement in the bore. The obturator assembly comprises a shaft having a longitudinal axis and having a distal end for insertion into a patient. The distal end of the obturator includes a tip which is non-conical and which has upper and lower faces that taper away from the shaft to form a V-shaped distal end of the tip. Wing elements provided between the upper and lower faces proximate the distal end of the tip, and the wing elements are spaced apart approximately 180 degrees from one another. The tip of the obturator may also include dorsal elements on the upper and lower faces.

A turbofan engine is provided that includes a core nacelle at least partially surrounded by a fan nacelle. The core nacelle includes a reflex nozzle providing a core exit. The core nacelle includes a contour on its exterior surface upstream from the reflex nozzle. The contour is generally conical and tapers toward the core exit at a first slope. The reflex nozzle tapers toward the exit at a second slope that is less steep than the first slope. The reflex nozzle includes a generally linear portion. In one example, the reflex nozzle is provided by a generally cylindrical extension that sufficiently turns the bypass flow away from the core exit so that the core flow does not become choked.

A helix cup for use in a pressurized dispenser. The helix cup has a convergent funnel wall. The funnel wall is not straight and does not satisfy the mathematical equations for surface area or for subtended volume of the frustrum of a cone. Instead, the funnel wall provides a longer flow path than is achieved with straight sidewalls. The longer flow path provides for a tighter particle size distribution at lower pressures than occurs in the prior art.

The present invention provides a compact coaxial nozzle useful in laser welding operations where the welding piece has a restricted or confined geometry. The nozzle is generally conical in shape, terminating in a relatively small tip. The nozzle includes a central laser discharge opening. The conical shape allows movement of the nozzle in confined areas. The nozzle includes a cooling jacket for proving coolant to the nozzle. The nozzle also includes a powder mixing chamber that provides good mixing of powdered filler material with a coaxial discharge around the laser. Finally, the nozzle further provides for inert gas to pass from an upper inlet, through passageways, out of a ring discharge. The ring discharge is also coaxially disposed around the central laser. Further the ring discharge provides mixing of the inert gas in order to minimize turbulent flow problems associated with restrictor plates.

An improved PDA-like portable electronic communication device includes a housing having a display screen on the front and a mounting surface that is contoured to generally conform to the shape of a user's forearm. In this way, the communication device can be comfortably and securely worn on a user's forearm so that it is constantly or immediately available for use. In example embodiments, the mounting surface is formed by the back side of the housing and is cylindrically concave or frustoconically concave. In other example embodiments, the device includes a mount to which the housing attaches in multiple positions, with the mount having a frustoconically concave back surface in one embodiment and with another embodiment additionally including mating cylindrically convex and concave surfaces of the mount and the housing.

In one aspect, the invention relates to a pipette tip mounting shaft configuration and a disposable pipette tip having a matching configuration. The mounting shaft includes a locking section located above a lower sealing section. The locking section has outwardly extending locking lobes located above a stop member and a lower sealing section located below the stop member. In certain embodiments, the diameter of the mounting shaft below the stop member is reduced in order to lessen insertion and ejection forces, which is particularly helpful for hand-held multi-channel pipettors. In these embodiments, the lower sealing section contains either a frustoconical sealing section, or an annular groove and a sealing ring, such as a flouroelastomeric O-ring seal. When the mounting shaft is fully inserted into the collar of the mating disposable pipette tip, the tip locks onto the mounting shaft. The bore of the pipette tip includes a circumferential shelf or shoulder separating its upper collar from the tip sealing area which is located below the circumferential shelf. The tip collar preferably includes a locking ring located at or near the upper opening for the mounting shaft. The dimensions of the collar, and in particular the distance between its circumferential shelf and the locking ring, are selected to match the dimensions of the mounting shaft between the stop member and the upper end of the locking lobes, thus locking the pipette tip in a secure, reliable position and orientation while using ergonomic insertion and ejection forces. The locking lobes preferably include a ramp portion that gently flexes and distorts the pipette tip collar out of round as the mounting shaft is inserted in the pipette tip, rather than stretching the tip collar. The circumferential shelf on the pipette tip between the tip collar and the barrel isolates the sealing area at the upper end of the barrel from distortion, thus facilitating reliable sealing engagement between the lower sealing section of the mounting shaft and the sealing ring in the upper end of the barrel of the pipette tip.