Abstract: An aircraft can include a stacked propeller to generate lift during assent and descent. The stacked propeller includes a first propeller and a second propeller that co-rotate about an axis of rotation. In one embodiment, the blades are coupled to a rotor mast that contains an internal cavity. In one mode of operation, the first propeller and/or the second propeller can be stored in the internal cavity in order to reduce drag during flight. The aircraft can include one or more stacked propellers, such as a port propeller and a starboard propeller, which rotate in opposite directions during one or more modes of flight.

Abstract: A door assembly includes an inner door panel and an outer door panel pivotable with respect to the inner door panel, the inner door panel including a latch base. The outer door panel includes a handle assembly including a handle endcap, a handle body rotatable with respect to the handle endcap, and a latch bar connected with the handle body, the latch bar being detachably coupled to the latch base. The outer door panel is rotatable with respect to the inner door panel, such that the outer door panel can be rotated away from the inner door panel.

Abstract: A microwave resonator device including a first resonator member comprised of a dielectric material and a second resonator member comprised of a dielectric material. The second resonator member can be positioned spatially offset from the first resonator member to define a spatial interaction region configured to confine an electromagnetic field in a microwave region of the electromagnetic spectrum. The spatial offset between the first resonator member and the second resonator member defining the spatial interaction region is less than the microwave wavelength associated with a resonant frequency of the microwave resonator device. The microwave resonator device facilitates generation of a resonant field enhancement within the spatial interaction region.

Abstract: An IQ mixer is used in a Pound-stabilized microwave source to detect amplitude modulation of the signal reflected from the reference resonator. By properly configuring the IQ mixer so that the LO and RF inputs are maintained in quadrature at the Q mixer, hence in-phase at the I mixer, lower levels of amplitude modulation may be detected at lower modulation frequencies compatible with optimal choices of resonator coupling and maximal phase to amplitude conversion.

Abstract: An IQ mixer is used in a Pound-stabilized microwave source to detect amplitude modulation of the signal reflected from the reference resonator. By properly configuring the IQ mixer so that the LO and RF inputs are maintained in quadrature at the Q mixer, hence in-phase at the I mixer, lower levels of amplitude modulation may be detected at lower modulation frequencies compatible with optimal choices of resonator coupling and maximal phase to amplitude conversion. With the Q mixer held in quadrature it acts as a broadband phase noise detector. A portion of the Q mixer output is bandpass filtered and summed with the I mixer Pound-server voltage to achieve both center frequency stabilization and broadband phase noise suppression.

Abstract: Ice making appliances and methods for making ice using a machine-readable ice cube mold are provided herein. The ice making appliances and methods of making ice may include obtaining ice mold identifier data from the ice mold. Ice mold identifier may be used to acquire operating parameters of the ice making appliance specific to that ice mold from an external communication network. The operating parameters may be used to adjust operation of the appliance, such as the volume of water to dispense for that particular mold.

Abstract: A fixed-geometry probe for exchanging microwave energy with a cavity resonator is easy to manufacture, reliable and readily adjustable external to the cavity to select a coupling coefficient. The probe includes a transmission line that enters, turns and exits the cavity resonator. A first end of the transmission line lies outside the cavity resonator for connection to a microwave circuit to exchange microwave energy. A portion of the transmission line's outer conductor(s) is removed within the cavity resonator to form a fixed-geometry radiating element to exchange microwave energy with the cavity resonator in accordance with the coupling coefficient. The line's outer conductor is connected to the cavity resonator on either side of the radiating element. A second end of the transmission line is terminated outside the cavity resonator with a terminating impedance creating a mismatch with the line's characteristic impedance to create a reflective stub.

Abstract: An oven appliance includes a cabinet defining a cooking chamber to receive items to be cooked, a cooktop situated above the cooking chamber, and a door. A user interface panel is situated above the door and in front of the cooktop. A gasket occupies the space between the user interface panel and the cooktop, wherein the gasket includes several protrusions on its ends and central body that serve as both locators for consistently orienting the gasket with respect to the user interface panel during assembly and connectors for securing the gasket to the user interface panel.

Abstract: Described herein is an apparatus and a method for a low noise infinite radio frequency (RF) delayed-locked loop (DLL). The apparatus comprises a phase detector having a first input configured to receive a first RF signal, a second input, and an output; an infinite phase shifter having a first input configured to receive a second RF signal, an input bus, and an output connected to the second input of the phase detector; and a controller having a first input connected to the output of the phase detector and an output bus connected to the input bus of the infinite phase detector, wherein the output of the infinite phase shifter comprises a low noise signal in phase alignment with the first RF signal.

Abstract: A bicycle braking device includes a caliper, two operation units and two links. Each operation unit is installed to the two respectively threaded holes of the caliper and includes an operation assembly and a ring. Two links are respectively connected to the two operation assemblies. Each operation assembly includes multiple curve slots, and multiple balls are partially rotatably accommodated in each curve slot. Each ring is movably mounted to the core part of each operation assembly and includes multiple spiral grooves. The balls are accommodated in the spiral grooves and the curve slots. When the two links are pivoted by pulling the brake cable, the two core parts are rotated, and the two rings rotatably move to push the linings to clamp the brake disk. The balls ensure the rings to move smoothly so as to precisely clamp the brake disk.

Abstract: Ice making appliances and methods for making ice using a machine-readable ice cube mold are provided herein. The ice making appliances and methods of making ice may include obtaining ice mold identifier data from the ice mold. Ice mold identifier may be used to acquire operating parameters of the ice making appliance specific to that ice mold from an external communication network. The operating parameters may be used to adjust operation of the appliance, such as the volume of water to dispense for that particular mold.

Abstract: A dual-loop phase-locking circuit combines a conventional phase-frequency-detector (PFD) and frequency-divider based first loop to lock an output signal frequency to a multiple of a reference signal frequency within a first loop bandwidth BW1 with a second loop to simultaneously lock the output signal phase to a second signal independently locked to the same multiple of the reference signal. The second loop integrates the phase error between the output signal and the second signal, and applies an offset at the PFD output in the first loop to reduce the first loop phase errors within a second loop bandwidth BW2 (<BW1). The first loop bandwidth BW1 can be optimized for overall phase-noise performance of the output signal while retaining the excellent capture and hold characteristics of that loop's topology. The second loop provides superior carrier-frequency phase alignment between the output signal and second signal.

Abstract: A tire valve assembly includes a stem and a valve unit. The valve unit includes a movable part and a seal member. When introducing pressurized air into the tire valve assembly, the valve unit moves to a position in the stem to allow the pressurized air to flow into the tire. When the pressurized air is stopped from entering the tire valve assembly, the valve unit is pushed back by the pressure in the tire to seal the inlet so that the pressurized air in the tire does not leak to keep the tire pressure.

Abstract: An appliance includes a cabinet and an inner door. The inner door is configured such that an outer door panel is mountable on the inner door. An adjustable hinge rotatably couples the inner door to the cabinet. The adjustable hinge includes a movable door balance adjuster. A visual scale graphic is positioned proximate the adjustable hinge. The visual scale graphic includes a plurality of outer door panel weight indicia and a plurality of door balance adjuster position indicia. Each of the plurality of door balance adjuster position indicia corresponds to a respective one of the plurality of outer door panel weight indicia.

Abstract: A multi-pane door assembly for an oven appliance includes a door having first and second door panes. The first door pane is secured to the second door pane at a hinge point and is rotatable with respect to the second door pane between open and closed positions. As such, the door panes define a space therebetween when the first door pane is in the closed position. The door assembly also includes an engagement device for securing the door panes together, a locking mechanism for locking the engagement device, and a controller communicatively coupled to the actuating device. The locking mechanism includes, at least, a locking member and an actuating device. Thus, the controller is configured to receive one or more safety conditions relating to the oven appliance and select whether to engage or disengage the actuating device based on whether the safety condition(s) correspond to the predetermined safety condition(s).

Abstract: A door assembly includes an inner door panel and an outer door panel pivotable with respect to the inner door panel, the inner door panel including a latch base. The outer door panel includes a handle assembly including a handle endcap, a handle body rotatable with respect to the handle endcap, and a latch bar connected with the handle body, the latch bar being detachably coupled to the latch base. The outer door panel is rotatable with respect to the inner door panel, such that the outer door panel can be rotated away from the inner door panel.

Abstract: A method for allowing opening of a first door pane with respect to a second door pane of a multi-pane door assembly of an oven appliance includes receiving, via a controller, one or more safety conditions relating to the oven appliance. The method also includes determining, via the controller, whether the one or more safety conditions correspond to one or more predetermined safety conditions. Further, the method includes allowing, via the controller, opening of the first door pane with respect to the second door pane of the multi-pane door assembly to provide access to a space between the first and second door panes only upon satisfaction of the one or more safety conditions corresponding to the one or more predetermined safety conditions.

Abstract: An adjustable camera assembly mounted within a door of an oven appliance includes a vertical guide rail and a camera movably mounted to the guide rail. A drive mechanism, such as a lead screw driven by a stepper motor, is mechanically coupled to the camera for moving the camera along the guide rail. A heat shield is positioned proximate a bottom of the door and extends around the guide rail to define a protective cavity for receiving the camera and providing a thermal break from a heating element of the oven appliance. A controller is configured for moving the camera into the protective cavity during high temperature operation of the oven appliance, such as during a self-clean cycle.

Abstract: The example embodiments are directed to a system and method for tag mapping. In one example, the method includes receiving a request to perform tag mapping for a target tag of a master data set, the target tag representing a target component of an asset, querying a customer data for a plurality of candidate tag records based on the target tag, tokenizing the plurality of candidate tag records included in the customer data set, reducing an amount of the tokenized tag records in the customer data set based on the target tag and each tokenized candidate tag record, performing tag mapping with the reduced amount of tokenized tag records to identify at least one candidate tag that is a possible match to the target tag, and outputting information concerning the identified at least one matching candidate tag.

Abstract: A reflective microstrip tuning circuit that operatively couples to another circuit to be tuned, in which tuning circuit receives an incident signal from the other circuit and enables adjustment of the amplitude and/or phase of the return signal reflected by the tuning circuit for use in the other circuit. The tuning circuit includes one or more cascaded couplers that divide power from the incident signal unequally among a plurality of adjustable tuning arms, in which the tuning arms may be individually adjusted to change the phase of the signal that is reflected by each arm so that both the amplitude and phase of the signal returned by the tuning circuit is adjusted to achieve the desired tuning result. The difference in the power that is divided among the tuning arms provides a progressive weighting to the adjustment effect of each tuning arm, which provides for a series of coarse through fine adjustments that enables a greater degree of resolution when tuning.