Abstract: An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.

Abstract: A calibration device is described for use in calibrating an ultrasonic pulse echo apparatus for detecting a moving object in a fluid, where the ultrasonic pulse echo apparatus includes an ultrasonic transducer and calibration circuitry. A connector has a first end for connecting with a first fluid conduit and a second end for connecting with a second fluid conduit. A cavity between the first and second ends permits the fluid containing the moving object from the first conduit to flow through the connector cavity to the second fluid conduit. A first calibration sphere is positioned relative to the connector for reflecting an ultrasonic pulse signal transmitted by the ultrasonic transducer. The reflected ultrasonic pulse signal is useable by the calibration circuitry to calibrate the ultrasonic pulse echo apparatus.

Abstract: An apparatus for use in wellbore operations and a method for using it is provided. The apparatus includes a main body, two support ears spaced-apart and projecting from the main body, each having an inner ear part and an outer ear part. The inner ear part is able to support more weight than the outer ear part. In certain aspects, structure for preventing a large support link from being positioned on an outer ear part is provided. The apparatus, may be any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.

Abstract: Apparatus and method for the treatment of dental caries includes a source of oxidizing gas, an aqueous medium and a handpiece for delivering the gas and aqueous medium to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas and aqueous medium. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of gas and aqueous medium therepast.

Abstract: A drive system for wellbore operations, the drive system, in certain, but not necessarily all aspects, including a main body, a motor apparatus, a main shaft extending from the main body and rotatable by the motor, the main shaft having a top end and a bottom end, and an item, the item non-threadedly connected to the main shaft.

Abstract: Apparatus for the treatment of dental caries includes a source of oxidizing gas and a handpiece for delivering the gas to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of a gas therepast.

Abstract: An apparatus for use in wellbore operations, the apparatus including a main body, two support ears spaced-apart and projecting from the main body, each inner ear part having an inner part, and an outer ear part, the inner part able to support more weight than the outer part; and, in certain aspects, structure for preventing a large support link from being positioned on an outer ear part; the apparatus, in certain aspects, being any of a link adapter, a block adapter, a becket, an elevator, and a drilling hook.

Abstract: A drive system for wellbore operations, the drive system, in certain, but not necessarily all aspects, including a main body, a motor apparatus, a main shaft extending from the main body and rotatable by the motor, the main shaft having a top end and a bottom end, and an item, the item non-threadedly connected to the main shaft.

Abstract: A calibration device is described for use in calibrating an ultrasonic pulse echo apparatus for detecting a moving object in a fluid, where the ultrasonic pulse echo apparatus includes an ultrasonic transducer and calibration circuitry. A connector has a first end for connecting with a first fluid conduit and a second end for connecting with a second fluid conduit. A cavity between the first and second ends permits the fluid containing the moving object from the first conduit to flow through the connector cavity to the second fluid conduit. A first calibration sphere is positioned relative to the connector for reflecting an ultrasonic pulse signal transmitted by the ultrasonic transducer. The reflected ultrasonic pulse signal is useable by the calibration circuitry to calibrate the ultrasonic pulse echo apparatus.

Abstract: Apparatus for the treatment of dental caries includes a source of oxidizing gas and a handpiece for delivering the gas to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of a gas therepast.

Abstract: Apparatus and method for the treatment of dental caries includes a source of oxidizing gas, an aqueous medium and a handpiece for delivering the gas and aqueous medium to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas and aqueous medium. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of gas and aqueous medium therepast.

Abstract: A patient interface assembly adapted to be connected to a gas supply pump to deliver breathable gas to the inlet of a patient's respiratory system comprises a supply conduit, a patient interface, a branch swivel connector including a Y-piece and an elbow that swivels relative to the Y-piece, the branch swivel connector being adapted to be located to the rear of a patient's head in use and being connected to the supply conduit. A pair of inlet tubes each have a first end positioned in use near a mouth of a patient and are connected to the nose mask, a middle portion arranged to pass across a cheek of a patient and an end portion being joined to the Y-piece of the branch connector. The inlet tubes have a flat configuration and are provided with a plurality of internal ribs which prevent the tubes being crushed. A strap is secured to the patient interface and adapted to pass around the sides and rear of the head to hold the patient interface in position on the head.

Abstract: The present invention is directed to the improved synthesis of compounds of formula (I) an intermediate compound which is useful in the synthesis of the anticancer agents known as PSA conjugates.

Abstract: Apparatus for the treatment of dental caries includes a source of oxidizing gas and a handpiece for delivering the gas to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of a gas therepast.

Abstract: A method of treating gum disease, includes directing a stream of oxidizing gas onto a diseased gum for a period of time sufficient to kill microorganisms.

Abstract: A method of treating mouth ulcerations, includes directing a stream of oxidizing gas onto mouth ulcerations for a period of time sufficient to kill microorganisms.

Abstract: A method of treating bad breath, includes directing a stream of oxidizing gas onto mouth tissue for a period of time sufficient to kill microorganisms.

Abstract: A pipe support includes a base, and a clamp that fits onto a protrusion of the base. The clamp and the base protrusion have opposed rigid pipe-receiving surfaces, thus defining a pipe-receiving area or region between the surfaces. In this area one or more pipes of various sizes may be removably secured. Asymmetric teeth on both the protrusion and legs of the clamp, may be utilized to secure the clamp to the protrusion of the base. The base has a flat bottom for resting flat along a flat surface, such as a roof or ceiling surface. The flat bottom may have an upturned lip to prevent damaging of the flat surface during installation of the pipe support. The flat bottom may also have drainage passages or a channel that may facilitate drainage of rainwater off of the top side of the flat bottom.

Abstract: Apparatus for the treatment of dental caries includes a source of oxidizing gas and a handpiece for delivering the gas to a tooth. A cup attached to the handpiece is provided for receiving the gas and exposing a selected area of the tooth to the gas. The cup includes a resilient edge for sealably the edge for engaging the tooth around the selected area to prevent escape of a gas therepast.

Abstract: A method of treating root canals includes directing an oxidizing gas onto an opened root canal and containing the oxidizing gas at the opened root canal for a period of time sufficient to kill microorganisms therein. Thereafter, the oxidizing gas is removed from the opened root canal.