Abstract: A disk display includes a vessel having a vessel cap on a first end of the vessel, the vessel cap having a wall defining an opening, the wall including a disk support extending radially inward into the opening; and a disk retainer element that is securable within the vessel cap to hold a disk against the disk support. The disk retainer element may seat against the vessel cap using cooperating elements on the vessel cap and disk retainer element that define a trajectory for the disk retainer element to move along when the disk retainer element is being secured in the vessel cap, in which the trajectory flattens with increased insertion of the disk retainer element in the vessel cap, or the trajectory forms a helix having a continuously increasing helix angle. A knob and groove arrangement may be used for the cooperating elements.

Abstract: A gate valve assembly having a through bore adapted for fluid communication with a well bore and prepared for receiving an elongated member. The gate valve assembly comprises a gate element which is movably arranged in a gate valve housing, wherein the gate element has a gate bore arranged for receiving the elongated member, wherein a cutting tool is arranged in the gate bore first and second seats, wherein at least one of the first or second seat is arranged to provide sealing contact with a sealing surface of the gate element.

Abstract: A system and method are provided that allow mobile devices to securely communicate over wireless network with one or more security system control panels for controlling the security systems remotely. A mobile device may include an application or software that presents a virtual security keypad to the user on the mobile device for entering data or receiving data as if the user were directly using a security system control panel at a premise being secured. Mobile device communicates with a network operating center system using encrypted communication. The network operating decrypts the communication from the mobile device and sends it to a security system control panel. The network operating center system receives responses from the security system control panel, encrypts the responses and sends to the mobile device.