Patent application number | Description | Published |
20090033718 | Actuator - In one embodiment an electrostatic actuator includes: a first conductor associated with each chamber; a second conductor having a plurality of flexible first parts supported by a plurality of second parts, each flexible first part forming at least part of a wall of each chamber and each flexible first part located opposite a corresponding one of the first conductors across a gap; and a voltage source operatively connected to each of the first conductors for selectively applying a voltage between each of the first conductors and the second conductor In another embodiment, an electrostatic actuator includes: a plurality of rigid conductors arranged adjacent to one another along a chamber; and a flexible conductor disposed opposite to and spanning the plurality of first conductors across a gap, the flexible conductor forming at least part of one wall of the chamber such that flexing the flexible conductor flexes the wall to change the volume of the chamber. | 02-05-2009 |
20090033722 | Piezoelectric actuation mechanism - Embodiments of the present disclosure are disclosed. | 02-05-2009 |
20090109262 | FLUID EJECTION DEVICE - A fluid ejection device includes a fluid chamber having a first sidewall and a second sidewall, a flexible membrane extended over the fluid chamber and supported at an end of the first sidewall and an end of the second sidewall, an actuator provided on the flexible membrane, a first gap provided between the flexible membrane and the end of the first sidewall, and a second gap provided between the flexible membrane and the end of the second sidewall, and compliant material provided within the first gap and within the second gap. As such, the actuator is adapted to deflect the flexible membrane relative to the fluid chamber. | 04-30-2009 |
20100309259 | PRINT HEAD DIAPHRAGM SUPPORT - A print head ( | 12-09-2010 |
20110050808 | PIEZOELECTRIC PRINTHEAD AND RELATED METHODS - A piezoelectric printhead and related methods provide a first metallic electrode and a second metallic electrode deposited over a top surface and a bottom surface, respectively, of a piezoceramic plate. The second electrode is segmented into a plurality of electrode segments. A diaphragm is positioned over a plurality of pressure chambers, where the diaphragm includes a conductor positioned over each chamber. The piezoceramic plate is attached to the diaphragm such that each conductor on the diaphragm faces multiple electrode segments. | 03-03-2011 |
20110169894 | ELECTROSTATIC LIQUID-EJECTION ACTUATION MECHANISM - An electrostatic liquid-ejection actuation mechanism includes a membrane, a frame, and one or more deformable beams. The frame has two sides and a number of cross members that are non-parallel to the two sides. The two sides and the cross members define one or more areas individually corresponding to one or more liquid chambers. The deformable beams are disposed between the membrane and the frame. The deformable beams individually correspond to the liquid chambers, and define a number of slits. Each slit is adjacent to one of the two sides of the frame. The deformable beams have a width that is less than a width of the liquid chambers, due at least to the slits. | 07-14-2011 |
20120027236 | ACOUSTIC PRESSURE TRANSDUCER - Acoustic transducer means are provided. A monolithic semiconductor layer defines a plate, a pair of oppositely disposed torsional hinges, a flexible extension and at least a portion of a support structure. Acoustic pressure communicated to the plate results in tensile strain of the flexible extension. The flexible extension provides a varying electrical characteristic responsive to the tensile strain. An electric signal corresponding to the acoustic pressure can be derived from the varying electrical characteristic of the flexible extension. | 02-02-2012 |
20120102695 | PIEZOELECTRIC PRINTHEAD AND RELATED METHODS - A piezoelectric printhead and related methods provide a first metallic electrode and a second metallic electrode deposited over a top surface and a bottom surface, respectively, of a piezoceramic plate. The second electrode is segmented into a plurality of electrode segments. A diaphragm is positioned over a plurality of pressure chambers, where the diaphragm includes a conductor positioned over each chamber. The piezoceramic plate is attached to the diaphragm such that each conductor on the diaphragm faces multiple electrode segments. | 05-03-2012 |