Abstract: A safety cabinet includes an enclosure having a double-walled construction and a pair of doors to selectively seal the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The safety cabinet incorporates a sequential door-closing system that sequentially closes the doors of the safety cabinet in a predetermined order.

Abstract: In traction cleat and receptacle system in a shoe outsole, unauthorized cleats are prevented from connection to a receptacle by a projection in the receptacle cavity and a recess in the cleat attachment stem for receiving the projection. A locking arrangement includes an annular array of twelve locking teeth on a boss surrounding the receptacle cavity, wherein every fourth tooth has a steeper side angle to in cooperate with mating cleat locking posts. A cylindrical shroud prevents the locking posts from damaging the outsole material during cleat rotation.

Abstract: A safety cabinet is disclosed which includes an enclosure having a double-wall construction and at least one door to selectively seal the enclosure. The safety cabinet includes a latch system for selectively retaining the door(s) in a closed position to cover the enclosure. The safety cabinet can be used to store, for example, flammable liquids, flammable waste, corrosives, pesticides, or combustible waste. The latch system includes fusible links that fuse when exposed to high ambient temperatures and cause the latch system to further engage the enclosure, thereby promoting the interlocking relationship between the door(s) and the enclosure when the safety cabinet is exposed to threshold high ambient temperatures.

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: 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: A balaclava designed for covering a wearer's head and at least part of their neck has a face opening, and a removable, face conforming mask is releasably securable to the balaclava to cover part of the face opening corresponding to the part of a wearer's face below the eyes. The mask is designed to conform to the general contours of a wearer's lower face including the nose and mouth region, and has appropriate openings for breathing purposes.

Abstract: An upper receiver for a firearm, the upper receiver having: a hand guard section removably connected to the upper receiver via a locking mechanism pivotally mounted to the hand guard section for movement between a locking position and an unlocking position, wherein the locking mechanism requires only a single movement in one direction to move from the locking position to the unlocking position, wherein the hand guard section has peripheral device mounting rails located at a six o'clock position with respect to a centerline of the barrel and wherein the hand guard section is capable of being completely detached and removed from the upper receiver after the locking mechanism has been moved into the unlocking position; and a plurality of integrally formed rails located above the hand guard section and at three, nine and twelve o'clock positions with respect to the centerline of the barrel.

Abstract: An automatic or semi-automatic rifle. The rifle has a receiver and a bolt having a striking surface, the bolt enclosed within the receiver. A barrel has a bore, the barrel coupled to the receiver. An indirect gas operating system has a cylinder and a piston, the indirect gas operating system mounted with a mounting structure substantially independent of the barrel. The cylinder is in communication with the bore, and the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly.

Abstract: A semi-automatic or automatic rifle is provided. The rifle having: an upper hand guard and a lower hand guard each removably secured to an upper receiver of the rifle, wherein the upper hand guard has an integral upper rail that extends along an upper surface of the upper hand guard and the upper hand guard has a rear tab that is received within a mating slot of the upper receiver when the upper hand guard is secured to the upper receiver and wherein the upper rail of the upper hand guard is contiguous with a receiver rail when the upper hand guard is secured to the upper receiver; a cap configured to releasably engage a forward end of the upper hand guard and a forward end of the lower hand guard; and wherein the upper hand guard and the lower hand guard are not directly secured to a barrel of the rifle such that the upper hand guard and the lower hand guard float in position relative to the barrel of the rifle.

Abstract: A firearm having a lower receiver is provided. The receiver is adapted to couple with a plurality of upper receivers having different calibers. The lower receiver comprises a receiver extension having an opening therein. A spring is disposed within the opening. A buffer member is provided having a first portion having an end. The buffer member is coupled to the spring within the opening, wherein the buffer member is movable between a first position where the end is within the opening and a second position wherein the end external to the opening.

Abstract: A single use secure travel bag with tamper-evident closure provided herein. In some embodiments, the secure travel bag may include first and second walls joined together along first and second side edges to form a flexible enclosure having an open end, a tamper-evident seal including a layer of adhesive secured to the first wall and adapted to secure the first wall to the second wall in a sealed condition of said enclosure to seal the open end, a handle portion disposed on one of the first or second side edge, and a removable identification portion coupled to the secure travel bag along a perforated edge.

Abstract: A front sight for a weapon, the front sight having: a mounting block; a tower pivotally mounted to the mounting block for movement between a first position and a second position; a first locking mechanism comprising a plurality of spring biased members for retaining the tower in the first position and the second position, the plurality of spring biased members being configured to allow movement of the tower between the first position and the second position in response to a force applied to the tower; and a second locking mechanism configured to lock the tower in the second position, wherein the second locking mechanism must be manually released before the tower can be moved from the second position to the first position.

Abstract: An automatic or semi-automatic rifle. The rifle has a receiver and a bolt having a striking surface, the bolt enclosed within the receiver. A barrel has a bore, the barrel coupled to the receiver. An indirect gas operating system has a cylinder and a piston, the indirect gas operating system mounted with a mounting structure substantially independent of the barrel. The cylinder is in communication with the bore, and the piston is fitted to the cylinder and disposed for striking the striking surface and displacing the bolt assembly.

Abstract: A trigger mechanism for a firearm, the trigger mechanism having: a trigger for actuating a hammer of the trigger mechanism, wherein actuation of the trigger causes the hammer to advance to a firing position; and a release configured for movement between a first position and a second position, the release must be first actuated from the first position to the second position and thereafter from the second position to the first position in order to allow for the hammer to advance to the firing position.

Abstract: In various exemplary embodiments, the present disclosure relates to a flow divider in a spool for a pitless adaptor included in a booster station and/or well construction. The flow divider has a generally triangular shaped cross-section that efficiently helps direct water flow from a vertical to a horizontal direction reducing pressure head lost in the spool and thereby increasing the energy efficiency of the system. In various exemplary embodiments, the flow divider may have a variety of cross-sectionals shapes and sizes depending on the size and requirements of the well or booster station.

Abstract: An automatic or semi-automatic firearm having an indirect gas operating system, the firearm having: a receiver; a bolt assembly slidably received within the receiver; a barrel having a bore, the barrel coupled to the receiver; a gas block mounted to the barrel, the gas block having a cylinder in fluid communication with the bore; a rod coupled to the cylinder and having a striking rod; wherein gas discharged from a fired cartridge displaces the rod and causes the striking rod to strike a striking surface of the bolt assembly, wherein the gas repositions the bolt assembly in bore.

Abstract: A system for removably securing a hand guard to a semi-automatic or automatic rifle is provided. The system having: a first locking assembly for removably coupling a rear end of the hand guard to an upper receiver of the rifle; a second locking assembly for removably coupling a forward end of the hand guard to the rifle; and wherein the first locking assembly and the second locking assembly axially and rotationally position the hand guard with respect to the rifle and wherein the hand guard is not directly secured to a barrel of the rifle.