Abstract: An improved perforating gun with novel endplates is disclosed along with a corresponding method of assembly. The endplate includes a base with a first end separated from a second end separated by a curved sidewall centered around a longitudinal axis and a set of tube tabs flexibly coupled to the base and extending from the second end. Each of the set of tube tabs has a retaining lip and is generally oriented in a direction of the longitudinal axis. The endplate may include an optional carrier tab with an integrated alignment pin. Selected embodiments may also include a zero-tension connector with a sliding contact mounted within a cavity of a housing, a through-wire connected to the sliding contact. The novel endplate reduces the cost and complexity of manufacture and installation.

Abstract: The invention relates to a securing means for a screw having an annular sleeve for insertion in a through-hole in a workpiece, characterized in that the annular sleeve is provided with at least one plate-like resilient tongue which extends from the annular sleeve and which projects in the direction toward a longitudinal center axis of the sleeve.

Abstract: A pneumatic spring strut for a vehicle is provided including a hydraulic cylinder having a lower end for connection with a suspension system of the vehicle; a hydraulic piston slidably mounted within the hydraulic cylinder; a piston rod connected with the hydraulic piston; a pneumatic spring mount body connected with the hydraulic cylinder; a pneumatic spring bellows having a lower in connected with the pneumatic spring mount body; a top cap encircling the piston rod and being connected with a top end of the spring bellows, and a closing cover twist lock connected with the top cap.

Abstract: A device is provided for attachment to the existing snap portions on a helmet such as a motorcycle helmet. Design elements are presented on a display member, and in some embodiments the display member extends across several helmet snap portions. One embodiment incorporates helmet accessories, such as visors, while still providing the outward presentation of the design elements on the display member.