Abstract:
The invention relates to a method for manufacturing a glass funnel for a cathode ray tube, the funnel comprising a cone portion and a substantially cylindrical neck portion. The cone portion is manufactured in at least two parts, which are joined in a suitable way. The at least two parts comprise a front section and a back section. As a result of the above-described design of the cone portion, the funnel has at least one joint in the cone portion. If the cone comprises exactly two parts, being the front section and the back section, the funnel has exactly one joint, which is located at an interface between the front section and the back section.
Abstract:
In some embodiments of the invention, a security apparatus for a portable electronic device is provided. The security apparatus may include a plurality of shell portions, each shaped to wrap around part of a perimeter of the portable electronic device. The security apparatus may further include a connecting portion that engages at least one of the plurality of shell portions and to thereby couple the plurality of shell portions to each other. At least one of the connecting portion and one or more of the plurality of shell portions may include an attachment device, the attachment device being configured to engage with a locking head, thereby locking relative positions of the plurality of shell portions and the connecting portion.
Abstract:
An accessory for a portable device can include a number of selectable operational states. In order to convey information about the current operational state to a user, the accessory can be configured to generate a state signal that is directed to the primary device for the accessory. The state signal can include information, such as a static image, about the current operational state that can be displayed on a display device of the primary device. Where a primary device has multiple states than cannot easily be displayed to a user, an accessory can be used to generate a state signal that can be directed to a secondary device in order to display the state information for the primary device using the secondary device.