Abstract: A framework for a pop-up structure is provided comprising three or more loops (18, 12, 22) and a plurality of resilient deformable elongate members (14) extending between adjacent loops. The elongate members are pivotally attached to the loops (18, 12, 22) and the framework is extensible between a collapsed condition and a expanded condition, upon rotation of one loop relative to an adjacent loop. There is also provided a pop-up container comprising said framework and having an attachable cover.

Abstract: A framework for a pop-up structure is provided comprising three or more loops (18, 12, 22) and a plurality of resilient deformable elongate members (14) extending between adjacent loops. The elongate members are pivotally attached to the loops (18, 12, 22) and the framework is extensible between a collapsed condition and a expanded condition, upon rotation of one loop relative to an adjacent loop. There is also provided a pop-up container comprising said framework and having an attachable cover.

Abstract: Various systems and methods for peak signal detection. As one example, a method for peak signal detection that includes receiving a signal is disclosed. The received signal includes a signal region where the signal is increasing in amplitude, another signal region where the signal is decreasing in amplitude, and a transitional signal region coupling the first two signal regions. In some cases, the transitional region is of zero duration and the signal transitions directly from the increasing region to the decreasing region. The method further include calculating a distance between the signal region of increasing amplitude and the signal region of decreasing amplitude, and determining a peak of the received signal that is one half the distance from the signal region of increasing amplitude.

Abstract: Various systems and methods for accessing data via a variable polarity head assembly are disclosed herein. As one example, a method for accessing data is disclosed that includes receiving a data set, and sampling the data set using positive synchronization to create one data set and negative synchronization to create another data set. A respective sync mark is identified in each of the data sets, and the identified sync marks are compared. Based at least in part on the comparison of the sync marks, a polarity of the data set is identified. Based on the determined polarity of the data set, the data set may be delivered in a known polarity.

Abstract: A vibrating electrode electric arc welding tool for low currents particularly for use on thin gauge metal has a solenoid with a fixed core and a moving core spaced therefrom by an air gap. The moving core holds the electrode and the solenoid winding is in series connection with the current feed to the electrode. When the current increases due to contact between the electrode and work the moving core is attracted to the fixed core to break the connection and re-establish the arc. The tool further includes a diode in series with the current feed, the diode provides better control of the arc and enables lighter gauge metals to be welded.