摘要:
A quasi-kinematic coupling for mating components (mechanical parts, surfaces, assemblies and the like) employing mating sets of surface of revolution, (conical) grooves and cooperative surface of revolution (spherical/conical) protrusions for establishing six lines (not just prior points) of contact at the kinematic interfaces, and with elastic compliance therebetween and preferably with relief features to define the effective orientation as a clamping force seats the protrusions in the grooves and seals the component mating surfaces into contact.
摘要:
A handheld device to enable a person to create Braille impressions in adhesive tape as labels or messages, where the device includes a hollow base structure, with a tape exit port, and a top region with flexurally hinged embossing arms whose tips converge to a central region, where the tips have downwardly projecting convex bump structures located above concave bump receiving structures, and a tape holding structure onto which a roll of tape can be placed, whereby tape coming from the roll can pass between the convex and concave bump structures, over the cutting edge and out the tape exit port. Furthermore, the device can have a cover structure with flexurally hinged members located above, and coupled to, the hinged embossing arms with snap domes to provide an audible click and tactile cue when the flexurally hinged members are pushed down on by a user's fingers.
摘要:
Gravity induced flow cell. The flow cell includes first and second reservoirs having a selected volume containing a flowable redox electrode. A membrane separates charged and discharged material. An energy-extraction region includes electronically conductive porous current collectors through or adjacent to which the flowable redox electrodes flow and to which charge transfer occurs. Structure is provided for altering orientation of the flow cell whereby gravity induces flow of the flowable redox electrode between the first and second reservoirs to deliver power. By varying the angle of the cell, flow rate and power delivered on discharge or the charge rate on charge may be varied.
摘要:
A system for harvesting, storing, and generating energy, that includes floating structure supporting machinery to extract energy from wind, waves, surface generators, or currents. At least one energy storage and power generating unit is anchored to the seafloor and adapted to tether the floating structure to the unit. The unit includes an internal chamber into which water flows through a hydroelectric turbine to generate electrical energy. A pump is provided, powered by energy from the floating structure machinery, to evacuate water from the unit and a control system directs power from the machinery to pump water out of the unit during periods of excess energy extraction by the machinery and to allow water to flow into the chamber through the hydroelectric turbine to generate electrical energy during periods of lower energy extraction by the machinery. The same internal chamber design can be utilized to store hydrocarbons in the vicinity of undersea wellheads during “shut-in” procedures when the wellhead would otherwise be secured.
摘要:
A hydrostatic bearing is provided that includes a plurality of bearing pads that form loading carrying areas. A plurality of compensators are coupled to the bearing pads, each compensator includes a recessed region forming a partial arc that partially surrounds an inlet hole, the bearing pads and compensators form self-compensating features positioned on the same side of a shaft that is conducive to hydrodynamic operations
摘要:
Devices under test (DUTs) can be tested in a test system that includes an aligner and test cells. A DUT can be moved into and clamped in an aligned position on a carrier in the aligner. In the align position, electrically conductive terminals of the DUT can be in a predetermined position with respect to carrier alignment features of the carrier. The DUT/carrier combination can then be moved from the aligner into one of the test cells, where alignment features of the carrier are mechanically coupled with alignment features of a contactor in the test cell. The mechanical coupling automatically aligns terminals of the DUT with probes of the contactor. The probes thus contact and make electrical connections with the terminals of the DUT. The DUT is then tested. The aligner and each of the test cells can be separate and independent devices so that a DUT can be aligned in the aligner while other DUTs, having previously been aligned to a carrier in the aligner, are tested in a test cell.
摘要:
A probe card assembly can include a probe head assembly having probes for contacting an electronic device to be tested. The probe head assembly can be electrically connected to a wiring substrate and mechanically attached to a stiffener plate. The wiring substrate can provide electrical connections to a testing apparatus, and the stiffener plate can provide structure for attaching the probe card assembly to the testing apparatus. The stiffener plate can have a greater mechanical strength than the wiring substrate and can be less susceptible to thermally induced movement than the wiring substrate. The wiring substrate may be attached to the stiffener plate at a central location of the wiring substrate. Space may be provided at other locations where the wiring substrate is attached to the stiffener plate so that the wiring substrate can expand and contract with respect to the stiffener plate.
摘要:
A probe card assembly can include a probe head assembly having probes for contacting an electronic device to be tested. The probe head assembly can be electrically connected to a wiring substrate and mechanically attached to a stiffener plate. The wiring substrate can provide electrical connections to a testing apparatus, and the stiffener plate can provide structure for attaching the probe card assembly to the testing apparatus. The stiffener plate can have a greater mechanical strength than the wiring substrate and can be less susceptible to thermally induced movement than the wiring substrate. The wiring substrate may be attached to the stiffener plate at a central location of the wiring substrate. Space may be provided at other locations where the wiring substrate is attached to the stiffener plate so that the wiring substrate can expand and contract with respect to the stiffener plate.
摘要:
A circuit component has an elastically deformable first structure, a second structure, and a support structure coupling the first and second structures, wherein the support structure acts a fulcrum about which the first structure can be variably deformed in response to a variable force, to provide either a variable capacitor or a variable tank circuit having a variable capacitor and an inductor. In one particular embodiment, the circuit component includes a zipper actuator for elastically deforming the first structure. A method of making a circuit component includes forming an elastically deformable first structure, forming a second structure, and forming a support structure coupling the first and second structures, to provide either a variable capacitor or a variable tank circuit having a variable capacitor and an inductor. In one particular embodiment, the method includes forming a zipper actuator for elastically deforming the first structure.
摘要:
A motion apparatus having two or five degrees of freedom includes a plurality of arm flexures, a plurality of parallelogram flexures or a plurality of compound parallelogram flexures. The motion apparatus minimizes direct, parasitic, and coupled error motions.