Abstract: A customizable firearm system includes a chassis. A barrel assembly is disposed in the chassis. The barrel assembly including a trunnion and a barrel nut assembly. The barrel nut assembly includes an outer barrel nut sleeve and an inner barrel nut sleeve receiving a barrel. The barrel nut assembly is removably disposed in the trunnion. A bolt carrier assembly is disposed in the chassis. The bolt carrier assembly includes a backplate assembly and a pair of guide rods. Each of the guide rods have a first end disposed in the backplate assembly, and a second end disposed in the trunnion. A bolt carrier slidably disposed on the guide rod.

Abstract: Disclosed herein are embodiments of a method of laminating component layers of a solid-state battery. In the method, two or more component layers of a solid-state battery are advanced in a first direction. The two or more component layers include at least one of a continuous ribbon substrate or a carrier film. The two or more component layers are pressed between a first pressing chamber and a second pressing chamber to laminate the two or more component layers of the solid-state battery. The first pressing chamber is configured to apply a first pressure uniformly over a first surface area, and the second pressing chamber is configured to apply a second pressure uniformly over a second surface area. The first pressure is substantially equal to the second pressure, and the first surface area is substantially equal to the second surface area.

Abstract: A configuration of emergency stop (E-Stop) and high voltage interface lock (HVIL) circuit hardware and software is described that, alone or in combination, allows mobile electric machines with removable power units to function properly when the unit is removed, such as during battery swapping.

Abstract: A lawnmower blade stamped or laser cut from a single metal sheet arranged as four blade arms of equal length on a single cutting plane that can resemble a cruciform shape. This design yields a uniform strength and reliability and does not rely on nuts, bolts, and multipart construction, and with minimal effect on overall weight. Each blade extends outward from a center mounting, possesses an offset, a sharpened leading edge and oppositely a deflection portion that is curved upward to produce a consistent suction force and circulating air flow useful during high moisture conditions. The leading edges all rotate in a single cutting plane to produce a level grass cut. The blade is capable of easy installation on a wide range of lawnmowers, but with a focus on commercial models and applications.

Abstract: A method for heating an unpressurized aircraft includes receiving a desired air temperature, calculating a target duct air temperature based on the desired air temperature, determining an actual duct air temperature via a duct air temperature sensor, calculating a target modulation of one or more ram air valves based on a difference between the target duct air temperature and the actual duct air temperature, modulating one or more of the ram air valves based on the target modulation, introducing a bleed air from a turbine engine to a heat exchanger, introducing a temperature control air from one of the one or more ram air valves to the heat exchanger for cooling the bleed air to provide a temperature-controlled air, mixing the temperature-controlled air from the heat exchanger with an ejector ram air in an ejector, and providing air from the ejector to an occupied compartment of the unpressurized aircraft.

Abstract: An automatic solution injection apparatus and method with a motor where the motor operates an action arm. A container configured to retain fluid and where the container is sealed with a fluid check valve and where the fluid check valve is connected with the motor action arm such that operation of the motor action arm opens the fluid check valve such that fluid exits the container. A printed circuit board (PCB) controller connected with the motor where the PCB controller automatically controls the operation of the motor and a pump connected with the motor such that operation of the motor actuates the pump where the pump directs fluid that exits the container to a dispenser nozzle.

Abstract: An electric temperature control system for unpressurized aircraft and methods for operating are disclosed. The electric temperature control system may be electrically powered and used on all-electric aircraft or hybrid aircraft. The electric temperature control system may comprise a vapor cycle cooling system for cooling air and an electric heater for heating air. The electric heater may be a PTC electric heater with individually-controllable heating elements. Various input devices may be disposed in the aircraft allowing an operator to set a compartment temperature, an air source, and a fan speed. A controller controls operations of the electric temperature control system based on feedback received from a plurality of feedback devices and the operator inputs.

Abstract: A customizable firearm system includes a chassis. A barrel assembly is disposed in the chassis. The barrel assembly including a trunnion and a barrel nut assembly. The barrel nut assembly includes an outer barrel nut sleeve and an inner barrel nut sleeve receiving a barrel. The barrel nut assembly is removably disposed in the trunnion. A bolt carrier assembly is disposed in the chassis. The bolt carrier assembly includes a backplate assembly and a pair of guide rods. Each of the guide rods have a first end disposed in the backplate assembly, and a second end disposed in the trunnion. A bolt carrier slidably disposed on the guide rod.

Abstract: A skin-forming die includes an inlet face; an outlet face; one or more slots, each of the one or more slots comprising one or more slot inlets extending between the one or more slot inlets and the outlet face; a plurality of feedholes extending between the inlet face and the one or more slot inlets; and a central opening configured to receive a matrix die. Extrusion die apparatus and methods of manufacturing honeycomb bodies are also disclosed.

Abstract: A method for controlling a machine during a transition from a service brake state to a parking brake includes receiving, by a control module, a request for activating a parking brake assembly. The method also includes transmitting, by the control module, control signals for activating a set of first brakes associated with a service brake assembly, a set of second brakes associated with the service brake assembly, and a clutch assembly. The method further includes controlling, by the control module, the set of first brakes for deactivating the set of first brakes. The method includes controlling, by the control module, the parking brake assembly for activating the parking brake assembly. The method also includes controlling, by the control module, the set of second brakes for deactivating the set of second brakes. The method further includes controlling, by the control module, the clutch assembly for deactivating the clutch assembly.

Abstract: An electric temperature control system for unpressurized aircraft and methods for operating are disclosed. The electric temperature control system may be electrically powered and used on all-electric aircraft or hybrid aircraft. The electric temperature control system may comprise a vapor cycle cooling system for cooling air and an electric heater for heating air. The electric heater may be a PTC electric heater with individually-controllable heating elements. Various input devices may be disposed in the aircraft allowing an operator to set a compartment temperature, an air source, and a fan speed. A controller controls operations of the electric temperature control system based on feedback received from a plurality of feedback devices and the operator inputs.

Abstract: A customizable firearm system includes a chassis. A barrel assembly is disposed in the chassis. The barrel assembly including a trunnion and a barrel nut assembly. The barrel nut assembly includes an outer barrel nut sleeve and an inner barrel nut sleeve receiving a barrel. The barrel nut assembly is removably disposed in the trunnion. A bolt carrier assembly is disposed in the chassis. The bolt carrier assembly includes a backplate assembly and a pair of guide rods. Each of the guide rods have a first end disposed in the backplate assembly, and a second end disposed in the trunnion. A bolt carrier slidably disposed on the guide rod.

Abstract: A lightweight, low profile, disposable clamp for maintaining a compressive force on a cemented patella/patellar prosthesis combination so that the cement interface is not compromised while the cement cures during a total knee replacement.

Abstract: A plastic patellar prosthesis having a plurality of orienting pins, each pin having one or more projections that define a maximum diameter greater than the diameter of the patellar hole into which the orienting pin is inserted. The diametrical interference causes the projections to deform and thereby mechanically secure the patellar prosthesis to the resurfaced patella as the cement cures without the need for a patellar clamp to hold the prosthesis in place.

Abstract: A drainage plate (10) for an extruder assembly including a body (12) having an inner edge (14) and an outer edge (15). A seal portion (24) of the body extends radially from the inner perimeter toward the outer perimeter. One of more drainage features are located radially outward of the seal portion. The one or more drainage features extend an axial depth into the body such that a first thickness (t1) of the drainage plate at the seal portion is greater than a second thickness (t2) of the drainage plate at the one or more drainage features. Methods of manufacturing a drainage plate and manufacturing ceramic articles are also disclosed.

Abstract: An electric temperature control system for unpressurized aircraft and methods for operating are disclosed. The electric temperature control system may be electrically powered and used on all-electric aircraft or hybrid aircraft. The electric temperature control system may comprise a vapor cycle cooling system for cooling air and an electric heater for heating air. The electric heater may be a PTC electric heater with individually-controllable heating elements. Various input devices may be disposed in the aircraft allowing an operator to set a compartment temperature, an air source, and a fan speed. A controller controls operations of the electric temperature control system based on feedback received from a plurality of feedback devices and the operator inputs.

Abstract: An improved core for mounting on one or more core engaging elements such as a pair of chucks and a method of making an improved core are provided. The core is adapted to wind and unwind material thereon. The core may comprise a high coefficient of friction coating disposed on the inner surface of the core to improve the core-chuck interaction. The inner surface may be mechanically or chemically treated to improve core-chuck interaction.

Abstract: A system for detecting distribution of a weight of a payload in a dump body of a vehicle includes first sensors, second sensors, and a controller. The dump body is pivotable about pins to be selectively seated and titled to a frame of the vehicle. The first sensors are arranged between the dump body and the frame, and detect components of the weight of the payload exerted through the dump body when the dump body is seated relative to the frame. The second sensors are arranged correspondingly within the pins, and detect components of the weight of the payload exerted through the dump body. The controller determines a status of payload distribution in the dump body based on the component of the weight of the payload detected by the first sensors and second sensors, and generate a notification to indicate the status of payload distribution.

Abstract: A method for heating an unpressurized aircraft includes receiving a desired air temperature, calculating a target duct air temperature based on the desired air temperature, determining an actual duct air temperature via a duct air temperature sensor, calculating a target modulation of one or more ram air valves based on a difference between the target duct air temperature and the actual duct air temperature, modulating one or more of the ram air valves based on the target modulation, introducing a bleed air from a turbine engine to a heat exchanger, introducing a temperature control air from one of the one or more ram air valves to the heat exchanger for cooling the bleed air to provide a temperature-controlled air, mixing the temperature-controlled air from the heat exchanger with an ejector ram air in an ejector, and providing air from the ejector to an occupied compartment of the unpressurized aircraft.

Abstract: Method and pharmaceutical compositions for treating or limiting the occurrence of viral infections by administering a therapeutically effective amount of a pharmaceutical composition that targets the ACE2 active site. The pharmaceutical compositions include those of Formula (I), Formula (II), Formula (III), including Formulas (IIIa) and (IIIb), and the viral infections including but not limited to respiratory viruses and disease conditions and syndromes that are associated with the viral infections.