Abstract: A magnetically actuated sear for simulated firearm training is disclosed. The magnetically actuated sear includes a magnet and a magnet catch. The magnetically actuated sear facilitates a crisp trigger break thereby replicating the actual sear release of a firearm. The application of a suitable external trigger force causes the magnet catch to travel along the fulcrum away from the magnet. The greater the difference between the holding force when the magnet is in direct contact with the magnet catch and the attraction force between the magnet and the magnet catch, the crisper the magnetically actuated sear will feel. The magnetically actuated sear can be designed so that slack or trigger creep of the magnetically actuated sear can be matched to the actual firearm's slack or trigger creep.

Abstract: A magnetically actuated sear for simulated firearm training is disclosed. The magnetically actuated sear includes a magnet and a magnet catch. The magnetically actuated sear facilitates a crisp trigger break thereby replicating the actual sear release of a firearm. The application of a suitable external trigger force causes the magnet catch to travel along the fulcrum away from the magnet. The greater the difference between the holding force when the magnet is in direct contact with the magnet catch and the attraction force between the magnet and the magnet catch, the crisper the magnetically actuated sear will feel. The magnetically actuated sear can be designed so that slack or trigger creep of the magnetically actuated sear can be matched to the actual firearm's slack or trigger creep.

Abstract: A laser transmitter attaches to an arrow emulator secured to a bow and emits a laser pulse in response to bow actuation according to the present invention. The training system further includes a laser-detecting target having a planar array of laser light detectors which detect the location and timing of laser pulses received at the target. Alternatively, the detector may be utilized to detect laser signals impacting a target object, such as a bottle. The laser-detecting target may be connected to a computer which analyzes the target hit information and displays feedback or scoring information. The computer can be connected via a communications network to similar systems so that competitions or training exercises can be conducted across plural geographic locations. The competitions or exercises can be controlled from a central system or unit which may be accessible to individual shooters via an Internet web site.

Abstract: A tie system for the bed of a pick-up truck or an article-receiving tray has elongated coplanar corrugated ribs, with selected ribs or portions of ribs having spaced holes or openings extending horizontally therethrough for enabling hook-ended elastic tie downs to anchor objects that are being transported. Provision is made to avoid communication through the holes from one side of the system or tray to the other, thus rendering it leak-proof. The strength, minimal friction during loading, cleanability and water impermeability characteristics of the liner are retained, while adding the desirable feature of being able to selectively anchor objects of any shape and size in any location on the bed.

Abstract: A vacuum extraction tube is placed within a well casing which is permeable to gas and water at least within the vertical range of contaminated soil from which vapors and/or water are to be removed. The extraction tube has its lower open end extending a few inches above the water table. An internal venturi nozzle or passage adjacent the lower open end of the extraction tube is in exterior communication with one end of a siphon tube depending therefrom. The siphon tube has its opposite extend extending below the surface of the water in the casing, at least to a depth of contaminant-bearing soil from which vapors or water are to be removed. When vacuum is applied to the extraction tube through the exhaust end of a blower, self-priming air from within the casing is entrained upwardly through the open end of the extraction tube.

Abstract: A liner for the bed of a pick-up truck or an article-receiving tray has elongated coplanar corrugated ribs, with selected ribs or portions of ribs having spaced holes or openings extending horizontally therethrough for enabling hook-ended elastic tie downs to anchor objects that are being transported. Provision is made to avoid communication through the holes from one side of the liner or tray to the other, thus rendering it leak-proof. The strength, minimal friction during loading, cleanability and water impermeability characteristics of the liner are retained, while adding the desirable feature of being able to selectively anchor objects of any shape and size in any location on the bed.

Abstract: A method and apparatus for stripping a volatile compound from waste water comprises creating a high velocity spray of air and stream of water at a first inlet to a first expansion chamber to volatize the compound, recombining the water and air flow through a second and successive expansion chambers and recreating a spray at each such chamber, whereby additional volatile compounds are released from the water at each stage to steadily reduce the contamination of the water. The decontaminated water and volatile compound-laden air are separately collected after exiting the last expansion chamber.

Abstract: An unstable article to be transported is mounted on a portable base member. The base member consists of a webbing, a plurality of parallel rods interwoven with the webbing and a pair of channel members extending at right angles to the rods and interconnecting with the rods to form a frame for supporting the webbing in a tautened condition. The article utilizes the base member as a temporary, portable expanded base for the article to support the article and prevent its toppling, sliding or shifting during transport. The base member may be collapsed and rolled into a compact unit for shipping or storage.