450 results about "Bi stable" patented technology

The invention relates to mechanically bi-stable shutter assemblies for use in display apparatus to form images.

A stent has a substantially cylindrical tubular body with at least one expandable side branch that has a plurality of members. The plurality of members includes at least one first member having a first width and at least one second member having a second width, where the first width is greater than the second width. Each of the at least one first members and each of the at least one second members define a cell that has at least two stable cell geometries.

This invention relates to three-dimensional (3-D) electrophoretic displays comprising individually sealed cells filled with optically active electrophoretic dispersions, and more particularly to bi-stable, low-power-consumption and sealed microcup-based electrophoretic displays for high-quality three-dimensional imagery applications.

A tamper indicating closure according to the present invention includes a top wall and a skirt depending from the top wall. A tamper indicating band is connected to the skirt along a frangible line. The tamper indicating band includes a ring and at least one tab, the at least one tab having a bi-stable geometric shape. In particular, the tab includes a pair of extending members angled toward one another and connected by a transverse member. The shape of the tab allows it to be molded in a downward orientation and later folded to a stable, upward orientation without reheating or otherwise resetting the tab. The tab also includes a tab extension arranged on at least one of the transverse member and at least one extending member of at least one tab and extending in a direction of extension of the extending members from at least one tab, the tab extension configured to engage at least one container profile.

In all-optical networks, high speed optical switching and routing becomes one of the most important issues for interconnecting the transport network layers. This invention describes novel polarization-independent high speed optical switches using a digital Faraday rotator, which can also be used for various other optical switching devices. The basic digital Faraday rotator device is composed of (a) a semi-hard or hard iron garnet based magneto-optic crystal having bi-stable magnetization states at zero external magnetic field. (b) a wire winding around the crystal for changing the magnetization states by pulsed current having both fast rise time and short duration. (c) a circuit generating the required current pulses with both polarities. After a driving current pulse excitation to set the magnetization direction, the high coercive force and high remnant squareness in the garnet-based crystal will maintain the saturation magnetization state in the crystal without the need of any external current or magnetic field to sustain the remnant state. The apparatus and the method disclosed in this invention effectively reduces the overall power consumption. By using this digital Faraday rotator device, the polarization independent 1x2 and 2x2 optical switches are designed and fabricated.