Abstract: Battery protection circuit configurations are discussed which are detachable from the corresponding battery when the battery is scrapped or discarded. An apparatus includes a circuit substrate having interface elements configured to couple to tab terminals of a battery cell and output terminals configured to carry electrical current for the battery cell with respect to an external circuit. Each of the interface elements comprise an electrical contact that conductively contacts a mating tab terminal of the battery cell, and a releasable mechanism configured to hold the mating tab terminal against the electrical contact based at least on being placed in a locked state, and allow release the mating tab terminal based at least on being placed in an unlocked state.

Abstract: A check valve for preventing reverse flow of jettable material within a jettable material firing chamber during a firing event includes a free-floating plug. The check valve further includes at least one holding post, wherein the free-floating plug is arranged between at least one wall of the firing chamber and the holding posts, the at least one wall and the holding posts restricting the movement of the free-floating plug within the chamber.

Abstract: An electronic device includes a housing enclosure, which at least sealingly contains an electronic component, a barrier, a pump, and a coolant. The electronic component is located on a substrate, while the barrier defines a circulation loop in which the coolant is exposed to the electronic component. The pump is positioned within the circulation loop to cause flow of the coolant through the circulation loop along one side of the at least one barrier in one direction and along an opposite side of the at least one barrier in an opposite direction.

Abstract: An antenna having radio-frequency (RF) resonators and methods for fabricating the same are described. In one embodiment, the antenna comprises a physical antenna aperture having an array of antenna elements, where the array of antenna elements includes a plurality of radio-frequency (RF) resonators, with each RF resonator of the plurality of RF resonators having an RF radiating element with a microelectromchanical systems (MEMS) device.

Abstract: A pump includes a main chamber and a pair of valves on opposite ends of the main chamber. At least a portion of the respective valves and of the main chamber is formed from a single, unitary piece. The respective valves each contain a freely movable member to permit selective opening and closing of each respective valve. A force applicator alternately induces a suction action and an expulsion action in the main chamber.

Abstract: A pump includes a main chamber and a pair of valves on opposite ends of the main chamber. The respective valves each contain a freely movable member to selectively open and close each respective valve, wherein the freely movable member is formed from at least some of the same material used to form a chamber portion of the respective valves. A force applicator is coupled relative to the main chamber to alternately induce a suction action and an expulsion action.

Abstract: A check valve for preventing reverse flow of jettable material within a jettable material firing chamber during a firing event includes a free-floating plug. The check valve further includes at least one holding post, wherein the free-floating plug is arranged between at least one wail of the firing chamber and the holding posts, the at least one wall and the holding posts restricting the movement of the free-floating plug within the chamber.

Abstract: An electronic device includes a housing enclosure, which at least sealingly contains an electronic component, a barrier, a pump, and a coolant. The electronic component is located on a substrate, while the barrier defines a circulation loop in which the coolant is exposed to the electronic component. The pump is positioned within the circulation loop to cause flow of the coolant through the circulation loop.

Abstract: A pump includes a main chamber and a pair of valves on opposite ends of the main chamber. The respective valves each contain a freely movable member to selectively open and close each respective valve, wherein the freely movable member is formed from at least some of the same material used to form a chamber portion of the respective valves. A force applicator is coupled relative to the main chamber to alternately induce a suction action and an expulsion action.

Abstract: A pump includes a main chamber and a pair of valves on opposite ends of the main chamber. At least a portion of the respective valves and of the main chamber is formed from a single, unitary piece. The respective valves each contain a freely movable member to permit selective opening and closing of each respective valve. A force applicator alternately induces a suction action and an expulsion action in the main chamber.

Abstract: An antenna having radio-frequency (RF) resonators and methods for fabricating the same are described. In one embodiment, the antenna comprises a physical antenna aperture having an array of antenna elements, where the array of antenna elements includes a plurality of radio-frequency (RF) resonators, with each RF resonator of the plurality of RF resonators having an RF radiating element with a microelectromchanical systems (MEMS) device.

Abstract: An antenna having radio-frequency (RF) resonators with tunable capacitors. In one embodiment, the tunable capacitor for tuning an RF resonator comprises: a first substrate with a first electrode attached thereto; a second substrate with a second electrode attached thereto; and a membrane between the first and second electrodes, the membrane being movable between the first and second electrodes in order to change capacitance.

Abstract: A printhead or other fluid handling device includes a firing chamber. Plural actuators are configured to cause fluid to be drawn into or ejected from the firing chamber. The actuators can also cause fluid to circulate within the firing chamber without appreciable fluid flow out of or into the firing chamber. Electronic signals independently control the respective actuators in accordance with various operating modes. Problems associated with fluid drying, separation of constituents within the fluid and other phenomenon are reduced or eliminated accordingly.

Abstract: In an embodiment, a method of circulating fluid in a fluid ejection device includes generating compressive and expansive fluid displacements of different durations from a first actuator located asymmetrically within a fluidic channel between a first fluid feedhole and a nozzle while generating no fluid displacements from a second actuator located asymmetrically within the channel between the nozzle and a second fluid feedhole.

Abstract: A printhead or other fluid handling device includes a firing chamber. Plural actuators are configured to cause fluid to be drawn into or ejected from the firing chamber. The actuators can also cause fluid to circulate within the firing chamber without appreciable fluid flow out of or into the firing chamber. Electronic signals independently control the respective actuators in accordance with various operating modes. Problems associated with fluid drying, separation of constituents within the fluid and other phenomenon are reduced or eliminated accordingly.

Abstract: In an embodiment, a method of circulating fluid in a fluid ejection device includes generating compressive and expansive fluid displacements of different durations from a first actuator located asymmetrically within a fluidic channel between a first fluid feedhole and a nozzle while generating no fluid displacements from a second actuator located asymmetrically within the channel between the nozzle and a second fluid feedhole.