A motor drive device that closes a mounting hole for mounting a fan unit by way of a fan fixing member is provided with a structure that can effectively improve operability for maintenance. A bar serving as a regulating member of a motor drive device has a first projecting piece that is formed so as to curve downwards after extending in the horizontal direction from a top part thereof, and a second projecting piece that projects downwards from a bottom part thereof, and by the first projecting piece being placed in an upper insertion part and the second projecting piece being placed in a lower insertion part, a fan unit is fixed in a mounting hole of a flange.

An exhaust fan assembly, powered by solar energy, that is specially designed for use with portable toilets as well as other small, enclosed spaces. Design intent is to provide a convenient, energy efficient means of keeping these units ventilated.

A seating assembly includes a seatback having a seatback cushion. A carrier supports the seatback cushion. An upper thoracic region includes a first side support defining a first receiving aperture and a second side support defining a second receiving aperture. A lower lumber region includes an actuatable lumbar support configured to move between deployed and non-deployed conditions. An air mover is disposed between the first and second side supports. The air mover is suspended between the first and second side supports by a flexible band that extends laterally between the first and second side supports and is removably coupled with the first and second receiving apertures.

A ventilation assembly having a main housing that can be pre-installed in a wall or ceiling aperture. A fan assembly can be inserted through the aperture and releasably mounted within the main housing. The fan assembly can be removed from the main housing and replaced without removing the main housing from the wall or ceiling. An accessory component can be releasably mounted to the fan assembly either through the aperture when the fan assembly is mounted or prior to installation of the fan assembly.

The invention relates to an antenna arrangement (1) having an antenna arrangement housing (12), in which antenna arrangement housing (12) there are arranged an antenna (14), antenna electronics (16) for driving the antenna (14), and a fan unit (30) for active cooling of the antenna electronics (16), which fan unit (30) comprises a fan housing (40) having a plurality of fan unit side surfaces (41 to 48), which comprise a first fan unit housing side surface (41) and a second fan unit side surface (42; 43, 45), in which fan unit housing (40) there are arranged at least two fans (50), wherein the fan unit housing (40) has fluid passage openings (61, 62) on the first fan unit housing side surface (41) and on the second fan unit housing side surface (42; 43, 45) in order to permit a fluid (18) to flow through the fluid passage openings (61, 62).

A method and apparatus for removing and replacing an integral-motor fan from below. A support assembly has support struts fixed to a mounting ring. Mounting ring is configured to be fixed to the fan head, holding the fan in place, and support struts are configured to rest on mounting bolts fixed to a fan shroud. To mount a fan in place from below, the fan is fixed to the mounting ring of the support assembly, and the support assembly and attached fan are lifted into the fan shroud. The support assembly is rotated until the struts align with the support bolts in the fan shroud. The support assembly is then lowered until the struts come to rest on the support bolts. A power cable with a length sufficient to lower the fan support assembly out of the fan shroud prior to disconnecting the power cable from the fan body.

Fan wall module for a fan wall unit arrangement, comprising a frame suitable for being connected to other frame of other fan wall modules, the frame delimiting a space suitable for housing a wall carried by the frame, the fan wall module comprising a fan assembly supported by the wall, this latter dividing such space in a first portion and a second portion, wherein the wall is carried by the frame in a movable manner so that the first portion can be reached through the second portion.

An inflatable U-shaped pillow includes a body and an inflatable device arranged on the body, where the inflatable device includes a draught fan, a connector electrically connected to the draught fan via signal line, and the connector is connected to an external power supply device to drive the draught fan. The inflatable device is configured to a storage chamber; the signal line is placed in the storage chamber, and the signal line is pulled out from the storage chamber; an air outlet of the draught fan is matched with the inflatable hole; the draught fan generates gas, and the gas is transmitted in the inflatable hole from the air outlet of the draught fan.

A connected impeller and shaft is provided. The shaft has a first part which provides a threaded portion carrying a thread which screws onto a corresponding threaded portion of the impeller. The shaft also has a second part which provides an abutment surface for engaging a corresponding abutment surface of the impeller when the threaded portions are screwed together, thereby tightening the threads to provide a rotationally fixed connection between the impeller and the shaft. The first part is rotationally fixed relative to the second part at a joint. The threaded portion of the shaft is axially spaced a first distance from the abutment surface of the shaft. The threaded portion of the shaft is axially spaced from the joint by a second distance which is greater than the first distance. The threaded portion of the shaft and the joint are on the same side of the impeller.

Notched portions and positioning projecting portions are elastically engaged with each other to hold a fan unit at a fixing position in a housing, in a state in which the fan unit is placed at the fixing position.