Abstract:
A drum for storing an electrically conductive tether having a first end secured to an aerial vehicle and a second end secured to a ground station that includes a drum frame rotatable about a drum axis, a drum surface positioned over the drum frame comprising a spiral extrusion wrapped around the drum frame, wherein the extrusion has a cross-section having an upper surface that is shaped to conform to an outer surface of the electrically conductive tether, and wherein the extrusion is adapted for dissipating heat generated through a transfer of electricity from the aerial vehicle to a ground station through the electrically conductive tether.
Abstract:
L'invention concerne un dispositif (8) enrouleur de câble électrique (4b) comportant un moyeu cylindrique (62), ajouré (622) en surface et ouvert (624) à au moins une de ses extrémités, le câble ayant au moins un conducteur (41, 42, 43, 44) et une gaine (45b) de surface externe de section non régulière.
Abstract:
A drum for storing an electrically conductive tether having a first end secured to an aerial vehicle and a second end secured to a ground station that includes a drum frame rotatable about a drum axis, a drum surface positioned over the drum frame comprising a spiral extrusion wrapped around the drum frame, wherein the extrusion has a cross-section having an upper surface that is shaped to conform to an outer surface of the electrically conductive tether, and wherein the extrusion is adapted for dissipating heat generated through a transfer of electricity from the aerial vehicle to a ground station through the electrically conductive tether.
Abstract:
In an electrical cord reel (10), a rotatable member(40) can rotate about a winding axis (42) to spool and unspool a linear material (25). An input power connector (22) can couple to an electrical power source (50). An output power connector (54) on the rotatable member (40) can couple to an electrical cord (25) at least partially wound about the rotatable member (40). A switch (52) is adjustable to allow or prevent electrical current flow from the input power connector (22) to the output power connector (54). One or more temperature sensors (58) detect temperature inside a housing (12) enclosing the rotatable member (40), output power connector ( 54), and a fan (62). A control system (60) activates the fan (62) if the detected temperature rises from a level below a fan-activation threshold to a level above the fan-activation threshold but below a power shut-off threshold. The control system (60) moves the switch (52) to an open position if the detected temperature is greater than or equal to the power shut-off threshold.
Abstract:
Die vorliegende Erfindung betrifft eine Kabelaufrollvorrichtung, die in einem entsprechenden Aufnahmeraum eines Staubsaugers einbaubar ist, wobei an der Kabelaufrollvorrichtung eine Hohlleitung (16) mit ihrem einen Ende (17) angeschlossen ist, deren anderes Ende im Ansaugbereich des Staubsaugergebläses endet. Sie zeichnet sich dadurch aus, dass in der Hohlleitung (16), insbesondere im Bereich der Biegestelle/n, wenigstens abschnittsweise ein Federelement (20) angeordnet ist. Auf diese Weise kann ein Kühlluftstrom in einer einen stets konstanten Querschnitt aufweisenden Hohlleitung (16) rückgeführt werden, so dass auch mit einer relativ kleinen Kühlmenge eine ausreichende Kühlung der Kabelwindungen erreicht und eine unzulässige Erwärmung derselben vorteilhaft vermieden wird.