Abstract: An example floor covering system in a passenger vehicle is described that includes a plurality of floor covering panels positioned adjacent to each other creating interfaces between respective floor covering panels of the plurality of floor covering panels, a plurality of joint panels positioned underneath one or more of the interfaces and the plurality of floor covering panels are rigidly coupled to at least one of the plurality of joint panels to prevent relative motion between the plurality of floor covering panels, and a plurality of attachment mounts attached to a structure of the passenger vehicle. Each of the plurality of floor covering panels is coupled to one or more of the plurality of attachment mounts, and the plurality of attachment mounts enable lateral movement relative to the structure of the passenger vehicle of the plurality of floor covering panels together in a joint manner.

Abstract: An integrated battery cooling assembly, the assembly comprises a battery module having a first side and a second side. The battery module further comprises at least a battery unit, wherein the battery unit comprises a plurality of battery cells and at least a cooling plate having a first surface and a second surface. The at least a cooling plate comprises at least a cooling pipe, configured to generate a hollow opening from the first side of the battery module to the second side of the battery module, and at least a mounting channel, configured to separate each battery cell of the plurality of battery cells on the first surface of the at least a cooling plate. The battery module further comprises at least an adapter pin coupled to the hollow opening of the first side of the at least a battery module, configured to generate an open channel from the first side of the battery module to an area external to the battery module.

Abstract: A power source assembly for an electric eVTOL aircraft comprising a battery pack. The battery pack further comprising an end panel, a plurality of high energy density battery modules, wherein each module comprises a plurality of battery units, further comprising a plurality of battery cells electronically coupled together, a cell retainer disposed in a predetermined arrangement comprising two columns, a protective wrapping of thermally insulating material woven between columns of battery units, and a terminal electronically disposed on the end panel electronically connected to each of the plurality of high energy density battery modules.

Abstract: A high energy density battery module may comprise a plurality of battery units. The battery units may be electronically coupled to at least one other battery unit and may further comprise a plurality of electrochemical battery cells. The battery units may comprise a cell retainer to fix cells in a predetermined arrangement comprising a first and second column of battery cells. The battery units may comprise protective wrapping of thermally insulating material woven between at least a portion of the first and second column of battery cells. An electrical contact may be may be disposed in or on each of the plurality of battery units.

Abstract: Apparatus, systems, and methods that include a variable length linkage for connecting together tie rods. The linkage includes first, second, and third apertures. There is a first distance between the first aperture and the second aperture and a second distance between the first aperture and the third aperture. The apparatus may include a fourth aperture having a third distance between the first aperture and the fourth aperture. The second, third, and fourth apertures may each have a non-circular cross-section. The linkage may include a base, a first finger, a second finger, and a third finger that each extend from the base. The first aperture may be in the base, the second aperture may be in the first finger, the third aperture may be in the second finger, and the fourth aperture may be in the third finger. The first aperture may be oriented vertically with the other apertures oriented horizontally.

Abstract: A method of joining panels is disclosed, including adhesively bonding a case in a slot of a first panel, the case having a channel on an inner side, and adhesively bonding a plate to a tab portion of a second panel, the plate having an external pin member. The method further includes inserting the tab portion of the second panel into the case in the slot of the first panel and sliding the external pin member of the plate along the channel on the inner side of the case, to a locking position.

Abstract: A hybrid underlayment including a compliant material layer and a rigid material layer affixed to the compliant material layer. The compliant material layer exhibits a compression deflection as measured according to ASTM standard D-1056-14 in the range of from about 0.14 kilogram force per square centimeter to about 1.76 kilogram force per square centimeter, and a thickness of at least about 2 millimeters. The rigid material layer exhibits a thickness of at least about 0.5 millimeters and a flexural modulus of at least about 600 MPa and flexural strength of at least about 35 MPa in both the length and width directions, both flexural modulus and flexural strength as measured according to ASTM D790-17.

Abstract: Apparatus, systems, and methods that include a variable length linkage for connecting together tie rods. The linkage includes first, second, and third apertures. There is a first distance between the first aperture and the second aperture and a second distance between the first aperture and the third aperture. The apparatus may include a fourth aperture having a third distance between the first aperture and the fourth aperture. The second, third, and fourth apertures may each have a non-circular cross-section. The linkage may include a base, a first finger, a second finger, and a third finger that each extend from the base. The first aperture may be in the base, the second aperture may be in the first finger, the third aperture may be in the second finger, and the fourth aperture may be in the third finger. The first aperture may be oriented vertically with the other apertures oriented horizontally.

Abstract: A gaming machine is provided having a cabinet with one or more technician accessible and normally locked compartments that include respective compartment service lights. A respective gaming power supply node is provided in at least one of the compartments where power is supplied to that node for a limited time during servicing. In order to allow for long durations of service lighting in the compartment, a service backup battery is added to the compartment. A power selecting circuit is employed to automatically select either the service backup battery or the gaming power supply node for supplying power to service lights in the compartment.

Abstract: An example floor panel for a flooring system in a passenger vehicle includes a top sheet, a bottom sheet, a body situated between the top sheet and the bottom sheet, and an interlocking feature that extends outward from the body for slidably engaging an adjacent floor panel. An example flooring system in a passenger vehicle includes a first set of floor panels including panels rigidly attached to a structure of the passenger vehicle, and a second set of floor panels and each floor panel of the second set of floor panels has an interlocking feature for slidably engaging an adjacent floor panel and for enabling lateral relative motion to occur and restricting vertical relative motion between panels of the second set of floor panels and a respective adjacent floor panel.

Abstract: A hybrid underlayment including a compliant material layer and a rigid material layer affixed to the compliant material layer. The compliant material layer exhibits a compression deflection as measured according to ASTM standard D-1056-14 in the range of from about 0.14 kilogram force per square centimeter to about 1.76 kilogram force per square centimeter, and a thickness of at least about 2 millimeters. The rigid material layer exhibits a thickness of at least about 0.5 millimeters and a flexural modulus of at least about 600 MPa and flexural strength of at least about 35 MPa in both the length and width directions, both flexural modulus and flexural strength as measured according to ASTM D790-17.

Abstract: A collapsible ballistic shield which provides a degree of protection against ballistic threats. The shield includes a head plate, an upper torso plate, a lower torso plate, an upper lock-and-release hinge joint, a lower lock-and-release hinge joint, a primary handle, and a strap-mounting fastener. The head plate is positioned opposite to the lower torso plate, across the upper torso plate to outline a shape of a body. The head plate is pivotably attached to the upper torso plate by the upper lock-and-release hinge joint. The lower torso plate is pivotably attached to the upper torso plate by the lower lock-and-release hinge joint. Resultantly, the shield may be collapsed, expanded, and broken down. The primary handle provides a grasping point and is mounted to a rear surface of the upper torso plate. The strap-mounting fastener allows the user to attach the shield to external structures.

Abstract: An example floor panel for a flooring system in a passenger vehicle includes a top sheet, a bottom sheet, a body situated between the top sheet and the bottom sheet, and an interlocking feature that extends outward from the body for slidably engaging an adjacent floor panel. An example flooring system in a passenger vehicle includes a first set of floor panels including panels rigidly attached to a structure of the passenger vehicle, and a second set of floor panels and each floor panel of the second set of floor panels has an interlocking feature for slidably engaging an adjacent floor panel and for enabling lateral relative motion to occur and restricting vertical relative motion between panels of the second set of floor panels and a respective adjacent floor panel.

Abstract: In an example, a structural frame is described. The structural frame includes a hub and a plurality of truss members. The hub includes a plurality of hub slots around a perimeter of the hub. The plurality of truss members are configured to couple with the hub and each other. Each truss member is a monolithic structure including: (i) a body extending from a first end of the truss member to a second end of the truss member, (ii) a truss fastener at the first end and configured to couple with a respective one of the plurality of the hub slots of the hub, (iii) a truss slot at the second end and configured to couple to the truss fastener of another one of the plurality of truss members, and (iv) one or more retainers extending along the body between the first end and the second end.

Abstract: An example floor covering system in a passenger vehicle is described that includes a plurality of floor covering panels positioned adjacent to each other creating interfaces between respective floor covering panels of the plurality of floor covering panels, a plurality of joint panels positioned underneath one or more of the interfaces and the plurality of floor covering panels are rigidly coupled to at least one of the plurality of joint panels to prevent relative motion between the plurality of floor covering panels, and a plurality of attachment mounts attached to a structure of the passenger vehicle. Each of the plurality of floor covering panels is coupled to one or more of the plurality of attachment mounts, and the plurality of attachment mounts enable lateral movement relative to the structure of the passenger vehicle of the plurality of floor covering panels together in a joint manner.

Abstract: A gaming machine is provided having a cabinet with one or more technician accessible and normally locked compartments that include respective compartment service lights. A respective gaming power supply node is provided in at least one of the compartments where power is supplied to that node for a limited time during servicing. In order to allow for long durations of service lighting in the compartment, a service backup battery is added to the compartment. A power selecting circuit is employed to automatically select either the service backup battery or the gaming power supply node for supplying power to service lights in the compartment.

Abstract: A firearm accessory mount is an apparatus that maximizes the mounting surfaces on a firearm while allowing the interchangeability of a barrel onto and off of the firearm. The apparatus includes a left tactical rail, a right tactical rail, a gas-cylinder clamp, an upper tactical rail, and an elongated fixture with a transversal arc-shaped cross section. The left tactical rail, the right tactical rail, and the upper tactical rail allows for a variety of firearm accessories to mount onto the apparatus. The gas-cylinder clamp attaches the apparatus onto the gas cylinder. The elongated fixture braces the barrel while attached to the firearm. The arc-shaped cross-section of the elongated fixture allows the barrel to be replaced or a new barrel to be attached without altering the position and orientation of the firearm. The apparatus further includes a lower tactical rail that allows the mounting of firearm accessories beneath the gas cylinder.

Abstract: A method of joining panels is disclosed, including adhesively bonding a case in a slot of a first panel, the case having a channel on an inner side, and adhesively bonding a plate to a tab portion of a second panel, the plate having an external pin member. The method further includes inserting the tab portion of the second panel into the case in the slot of the first panel and sliding the external pin member of the plate along the channel on the inner side of the case, to a locking position.

Abstract: In an example, a structural frame is described. The structural frame includes a hub and a plurality of truss members. The hub includes a plurality of hub slots around a perimeter of the hub. The plurality of truss members are configured to couple with the hub and each other. Each truss member is a monolithic structure including: (i) a body extending from a first end of the truss member to a second end of the truss member, (ii) a truss fastener at the first end and configured to couple with a respective one of the plurality of the hub slots of the hub, (iii) a truss slot at the second end and configured to couple to the truss fastener of another one of the plurality of truss members, and (iv) one or more retainers extending along the body between the first end and the second end.

Abstract: A method for manufacturing a panel assembly is disclosed. The method includes receiving the panel assembly. The panel assembly includes at least one panel having a finished surface and a covering that is removably adhered to the finished surface of the panel, where the covering includes a plurality of patch sections defined by lines of demarcation. The method also includes removing at least one patch section from the finished surface of the panel to create an opening by tearing the at least one patch section along the lines of demarcation. Each of the plurality of patch sections are frangible with respect to an adjacent patch section at the lines of demarcation.