Abstract: An air shower system, as described herein, is for use with a dust collector having an intake vacuum. The system includes a chamber having at least one vacuum orifice and at least one air blade orifice. The intake vacuum is functionally connected to the vacuum orifice(s). At least one air blade is created when the intake vacuum draws air from the exterior of the chamber into the interior of the chamber through the air blade orifice(s). The air blade(s) may be used for dislodging contaminants from an occupant within the chamber.

Abstract: Preferred nose cones 100 associatable with a tail spout 120 of a sand handler and a vacuum hose 130 of a vacuum system are described herein. A method for containing respirable and/or inhalable particles 140 created in an industrial process is also disclosed herein.

Abstract: An air shower system, as described herein, is for use with a dust collector having an intake vacuum. The system includes a chamber having at least one vacuum orifice and at least one air blade orifice. The intake vacuum is functionally connected to the vacuum orifice(s). At least one air blade is created when the intake vacuum draws air from the exterior of the chamber into the interior of the chamber through the air blade orifice(s). The air blade(s) may be used for dislodging contaminants from an occupant within the chamber.

Abstract: Preferred nose cones 100 associatable with a tail spout 120 of a sand handler and a vacuum hose 130 of a vacuum system are described herein. A method for containing respirable and/or inhalable particles 140 created in an industrial process is also disclosed herein.

Abstract: A mechanical jar having a variable diameter tension ring which can be reciprocated from a large into a small diameter chamber and vice versa. When a fishing tool is connected to the jar, the jar is run downhole and set down, and a mandrel retracts into a barrel, causing a collet to move the ring into the large diameter chamber whereupon the ring expands to a large diameter and telescopingly receives the collet fingers therewithin. As the jar is picked up, the mandrel moves the ring from the large to the small diameter chamber, thereby reducing the diameter of the ring. This action releasably latches the ring and the collet fingers together. Accordingly, a very large axial force must be applied to the mandrel in order to cause the collet to be released from the ring; and, a very small reverse axial force is required for the collet to latch onto the ring.