Abstract: An automatic or semi-automatic firearm including a trigger having a frame, at least one trigger sear extending from the frame, and a hammer having a hammer pivot axis, a head and at least one hammer sear disposed on a lateral side of the hammer between the hammer pivot axis and the head, wherein the frame includes a pivot axis and the at least one trigger sear includes a trigger sear surface, the at least one trigger sear extending from the frame such that the at least one trigger sear engages a corresponding one of the at least one hammer sear.

Abstract: A fire control selector for an automatic firearm capable of automatic or semiautomatic fire is provided. The firearm has a receiver having a moveable hammer. The selector is rotatably mounted in the receiver. A first sear is rotatably mounted in the receiver to engage the hammer where the first sear contacts a first camming surface of the selector. A second sear is rotatably mounted in the receiver to engage the hammer where the second sear contacts a second camming surface of the selector. A disconnect is rotatably mounted in the receiver where the disconnect contacts a third camming surface of the selector. The selector has a number of selectable positions.

Abstract: An adjustable face mask having a body conforming substantially to the facial structure of a wearer. The face mask is provided with a neck protector and removable filter and with a strip of fabric designed to push air down to the sides of the wearer's face in order to eliminate fogging of the wearer's goggles. The face mask can optionally provide neck protection with a descending neck member.

Abstract: An indirect gas operating system for a semi-automatic or automatic rifle is provided, the indirect gas operating system having: a gas block secured to the rifle; a barrel secured to the rifle; a bolt carrier slidably received within a receiver of the rifle; a means for moving the bolt carrier within the receiver using gases discharged into a bore of the barrel of the rifle, wherein the means for moving is removably secured to the gas block such that the means for moving can be removed from the rifle through a forward end of the gas block without removing the gas block from the rifle; and an externally threaded barrel nut for securing the barrel to the receiver.

Abstract: A method of making a hand guard for a semi-automatic or automatic rifle is provided. The method including the steps of: forming a first portion of the hand guard from a first material; inserting the formed first portion into a mold; and molding a second portion of the hand guard about the first portion, the second portion being a second material, the second material being different from the first material, wherein a first section of the first portion is completely encased by the second portion and a second section of the first portion is not encased by the second portion.

Abstract: A thinner shoe mounted receptacle results from a thin cleat attachment flange received in a shallow receptacle cavity. An angled interface between the cleat and receptacle provide a friction fit engagement to minimize inadvertent disengagement of the cleat and receptacle. Rotational locking occurring inside or outside the cavity further prevents inadvertent cleat rotation. Multiple positionally synchronized angular stops positively define the final angular orientation of the cleat in the receptacle.

Abstract: A traction cleat applicable for use in field sports is provided with dynamic traction elements having larger radial thickness, cross-sectional area and mass than dynamic elements in golf shoe cleats. The strength of a locking arrangement for the cleat in a shoe-mounted receptacle is enhanced by providing an annular array of spaced locking stubs on the receptacle to engage a similar array of spaced locking posts on the cleat.

Abstract: An apparatus for remotely locking a container includes a vehicle having a main frame and a tipper frame hingedly connected to the main frame, at least one of the main frame and tipper frame being configured to receive and support a container thereon; an actuator assembly for pivoting the tipper frame relative the main frame between a reclined, container loading and transport position and an inclined, dumping position; a container configured for receipt, transport and dumping of material, including a box defining a rear opening, and having a door hingedly connected with the container box to swing between an open, material dumping position and a closed position covering and sealing shut the rear opening; at least one lock mechanism connected to at least one of the box and the door; a locking assembly connected to the container; and, an actuator assembly connected to the tipper frame and physically separate from the locking assembly, and when the container is juxtaposed atop the tipper frame said tipper frame is

Abstract: A thinner shoe mounted receptacle results from a thin cleat attachment flange received in a shallow receptacle cavity. An angled interface between the cleat and receptacle provide a friction fit engagement to minimize inadvertent disengagement of the cleat and receptacle. Rotational locking occurring inside or outside the cavity further prevents inadvertent cleat rotation. Multiple positionally synchronized angular stops positively define the final angular orientation of the cleat in the receptacle.

Abstract: Adjustable traction is provided in a traction cleat by selectively restricting or not the amount of flexure permitted for a dynamic traction element on the cleat. Restricting flexure is alternatively achieved by an adjustably positionable ring or by rotating the cleat to align the dynamic element with different shoe sole topographical features. A dual locking post is provided to reduce the surface area required on the cleat hub for locking structures. The cleat is formed in a two shot molding process that permits elongations of the dynamic traction elements without sacrificing the integrity of the cleat structure.

Abstract: A thinner shoe mounted receptacle results from a thin cleat attachment flange received in a shallow receptacle cavity. An angled interface between the cleat and receptacle provide a friction fit engagement to minimize inadvertent disengagement of the cleat and receptacle. Rotational locking occurring inside or outside the cavity further prevents inadvertent cleat rotation. Multiple positionally synchronized angular stops positively define the final angular orientation of the cleat in the receptacle.

Abstract: Adjustable traction is provided in a traction cleat by selectively restricting or not the amount of flexure permitted for a dynamic traction element on the cleat. Restricting flexure is alternatively achieved by an adjustably positionable ring or by rotating the cleat to align the dynamic element with different shoe sole topographical features. A dual locking post is provided to reduce the surface area required on the cleat hub for locking structures. The cleat is formed in a two shot molding process that permits elongations of the dynamic traction elements without sacrificing the integrity of the cleat structure.

Abstract: A safety can includes a receptacle and a valve mechanism connected thereto. The valve mechanism can include a body, a fill cover assembly, a pour valve assembly, and a trigger assembly. The body can include a fill port and a separate pour port. The fill cover assembly can be adapted to selectively move between a closed position to cover the fill port and an open position to allow the receptacle to be filled. The pour valve assembly can be adapted to selectively move between a closed position to cover the pour port and an open position to allow fluid to be poured from the receptacle through the pour port. The trigger assembly can be operated to move the pour valve assembly. The pour valve and the pour port can be disposed along a longitudinal pour axis. The fill port can be disposed in offset relationship to the longitudinal pour axis.

Abstract: A thinner shoe mounted receptacle results from a thin cleat attachment flange received in a shallow receptacle cavity. An angled interface between the cleat and receptacle provide a friction fit engagement to minimize inadvertent disengagement of the cleat and receptacle. Rotational locking occurring inside or outside the cavity further prevents inadvertent cleat rotation. Multiple positionally synchronized angular stops positively define the final angular orientation of the cleat in the receptacle.

Abstract: A heater for heating air passing through a conduit to an aircraft cabin includes a first support ring in the conduit, defining an air passage there through. A plurality of serpentine heating elements is provided, with each heating element extending across the air passage and being supported at both sides of the air passage by the support ring. The serpentine heating elements are generally parallel to each other and evenly spaced in the air passage. A power supply supplies electrical current to the heating elements such that air passing through the air passage is heated by the heating elements. The heating elements may are non-planar, wavy, corrugated in shape, permitting them to be supported only at their side edges.

Abstract: A shoe stud and receptacle, the shoe stud including a ground-engaging part and the two components are adapted to be secured together by a multi-start threaded connection comprising a screw-threaded spigot on one of the two components adapted to be inserted with rotation into a screw-threaded socket on the other component, and a locking means of the components which is arranged to become interengaged to resist unscrewing of the assembly, the locking means comprising a primary locking means and at least one secondary locking member, the primary locking means comprising a ring of posts extending axially from one of the components and a ring of teeth on the other component, the posts engaging between the teeth, and wherein the or each secondary locking member is adapted to engage with a post to maintain the interengagement of the primary locking means.

Abstract: A wheelchair and an examination table is provided wherein there is provided a connector or connector assembly for connecting the wheelchair to the examination table. Once connected to the examination table, the wheelchair and patient sitting therein can be elevated, after which side frames of the wheelchair can be removed in order to facilitate examination of the patient. In addition, once elevated and the side frames removed, with the aid of a movable back that forms a part of the examination table, the back of the wheelchair can be reclined or positioned in various positions to facilitate examination and procedures.

Abstract: A magnet controller supplied by a DC generator controls a lifting magnet. Four transistors, forming an H bridge, allow DC current to flow in both directions in the lifting magnet. During “Lift”, full voltage is applied to the lifting magnet. During “Drop”, reverse voltage is applied briefly to demagnetize the lifting magnet. At the end of the “Lift” and the “Drop”, most of the lifting magnet energy is returned to the DC generator. A transient voltage suppressor protects against voltage spike generated when current reverses in the generator.