Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling is also disclosed comprising: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.

Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling is also disclosed comprising: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.

Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling is also disclosed comprising: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.

Abstract: The arc-resistant MCC is provided with either the expansion chamber or the plenum. Arc flashes create pressure. Different arc-resistant MCC bases are used depending on whether the expansion chamber or the plenum is to be attached, as the expansion chamber and the plenum deal with the created pressure in different ways and are accordingly attached to the MCC base in different ways.

Abstract: A drill bit comprises: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling comprises: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.

Abstract: A drill bit is disclosed, comprising: a drill bit head having a cutting face with one or more fixed cutting elements; a flow passage extending through the drill bit head to the cutting face; a flow interrupter within the drill bit head and positioned to interrupt flow of fluid through the flow passage; and a power section connected to drive the flow interrupter and cause, in operation, variable flow of fluid through the flow passage. A method of drilling is also disclosed comprising: flowing fluid through a flow passage extending through a drill bit head to a cutting face of the drill bit head, the cutting face having one or more fixed cutting elements; and driving a flow interrupter within the drill bit head with a power section to interrupt the flow of fluid through the flow passage and cause variable flow of fluid through the flow passage.

Abstract: A system for controlling insects is provided. The system includes an insect control compound reservoir. A pump receives an insect control compound from the insect compound reservoir and pressurizes the insect control compound. A rechargeable battery provides power to the pump. A plurality of nozzles receive the pressurized insect control compound and generate an insect control compound mist. A controller receives a first command to cause the pump to begin operation and a wireless signal to cause the pump to stop operation.

Abstract: A dental floss brush made from a reverse twisted, high tenacity nylon yarn comprising at least two thread sections having diameters, in their relaxed state, of at least 2.5 min. The thread sections are separated by a floss brush section integral therewith having a diameter of from up to 4 mm in its relaxed state and a diameter of from 1.7 to 3.0 mm under a tension of 0.05N. The brush floss has a breaking strength of at least 5N. The floss brush section can be coated with a low melting wax composition, optimally a polyethylene glycol ester of beeswax alone or in combination with a flavoring oil, silicone oil lubricant or mixtures thereof. This product is made by coating a reverse twisted, high tenacity nylon yarn with a solution of polymer in a volatile solvent, the polymer being selected from the group consisting of nylon, polyurethane and mixtures thereof.

Abstract: A process for making a shaped, highly flavored floss and the floss product of that process. The process comprises coating a multi-filament thread with a first liquid or semi-solid wax composition having a high melting temperature and cooling the coating to a temperature at which the first wax composition has become a solid to form a shaped thread. The thread is optionally reshaped. The shaped thread, carrying the primary coating, is coated with a lower melting liquid or semi-solid wax composition having a temperature less then the melting point of the first coating without disrupting the first wax composition of the shaped configuration of the thread. The lower melting wax composition contains volatile flavoring oil.

Abstract: An interdental foam brush with an elongate non-conductive, galvanic shock free stem having a boss, the stem having a brush support portion extending from the boss in the distal direction to a preferably rounded distal tip and a flexible handle engaging portion extending from the boss in the proximal direction. The brush support portion including its distal tip and the boss being enclosed in resilient, open-cell polymeric foam. The outer surface of the brush is tapered and converging in the distal direction. The boss is a stop means for limiting movement of the brush portion between interdental surfaces, and the brush support portion has a length approximating the width of a rear molar. The brush support portion has a diameter providing a brush support surface for effective cleaning while permitting passage of the brush between interdental surfaces. The foam has a hardness and pore density providing effective cleaning between interdental surfaces is achieved.

Abstract: A dental floss brush made from a reverse twisted, high tenacity nylon yarn comprising at least two thread sections having diameters, in their relaxed state, of at least 2.5 mm. The thread sections are separated by a floss brush section integral therewith having a diameter of from up to 4 mm in its relaxed state and a diameter of from 1.7 to 3.0 mm under a tension of 0.05 N. The brush floss has a breaking strength of at least 5 N. The floss brush section can be coated with a low melting wax composition, optimally a polyethylene glycol ester of beeswax alone or in combination with a flavoring oil, silicone oil lubricant or mixtures thereof. This product is made by coating a reverse twisted, high tenacity nylon yarn with a solution of polymer in a volatile solvent, the polymer being selected from the group consisting of nylon, polyurethane and mixtures thereof.

Abstract: A process for making a flattened, highly flavored floss and the floss product of that process. The process comprises coating a multi-filament thread with a first liquid or semi-solid wax composition having a high melting temperature and cooling the coating to a temperature at which the first wax composition has become a soft solid. The thread is flattened and coated with a lower melting liquid or semi-solid wax composition having a temperature less then the melting point of the first coating without disrupting the first wax composition of the flattened configuration of the thread. The lower melting wax composition contains volatile flavoring oil.

Abstract: A gel tray for holding a medicament to be applied to the teeth and gums of a patient includes a handle and an opposing buckle. In one embodiment, the buckle includes a tongue portion and a retainer strip surrounding the tongue portion so as to define a narrow space between the tongue portion and the retainer strip, the narrow strip having a width less than the thickness of the handle. The handle has a tongue reception groove extending transverse to its length at a position such that the tongue reception groove is engaged by the tongue when the tray is folded. In another embodiment, slotted tabs are interfitted when the tray is folded. The tray may therefore be securely maintained in the folded state. The tray can be combined with or preloaded with a treatment agent such as a gel comprising a pharmaceutically effective amount of at least one agent for treating teeth or gums dispersed in a gel medium consisting essentially of water and an amount of a water dispersible gelling agent sufficient to form a gel.