The present disclosure provides descriptions of electrical box assemblies for supporting heavy fixtures, such as ceiling fans, and facilitating electrical connections to the fixtures. The electrical box assembly includes an electrical box that allows a connection between the box and electrical conduits and a connection, e.g., a weatherproof connection, with a housing of the fixture. The box has an open front face to house electrical connections between the fixture and wires supplying electrical power to the box via the conduits. The box has a bottom wall and an open front face. A reinforcement member fits within the electrical box and includes a panel shaped to conform to at least a portion of the bottom wall and one or more standoffs extending toward the open front face of the box. When the reinforcement member is positioned within the box, mounting holes in the bottom wall of the box and reinforcement member are aligned to allow the box to be attached to a building structure.

The device includes a substantially cylindrical, oblong, rigid, extension pole having a distal end upon which is formed an articulatable jaw structure head which can be actuated between open and closed positions by the pull of either a medial handle or knob located at the proximal end. A collector sock made from a pliable sheet material can be mounted upon the jaw structure so that the sock enwraps the entire item to be dusted such as a ceiling fan blade. The inner surface of the sock surrounding its open end maw can include asperities and electrostatic, dust adhering fibers to help scrape off and capture fine particles of dust and other debris from the item being dusted. The head can include a pair of parallely separatable cantelevered beams engaging the sock.

A mechanical assembly for a vehicle (10), in particular a motor vehicle, comprises a rotating element (18), a support Got (20) for the rotating element (18), and a cover (22) attached on the support (20) for the rotating element (18). The cover (22) has at least one edge (50) attached on the support (20) for the rotating element (18) and a bottom (52) extending substantially in a plane. The N bottom (52) is at least partially covered by elastomer material (58).

A mechanical assembly for a vehicle (10), in particular a motor vehicle, comprises a rotating element (18), a support Got (20) for the rotating element (18), and a cover (22) attached on the support (20) for the rotating element (18). The cover (22) has at least one edge (50) attached on the support (20) for the rotating element (18) and a bottom (52) extending substantially in a plane. The N bottom (52) is at least partially covered by elastomer material (58).

A blower is provided that may include a fan that creates airflow; a lower body forming an inner space in which the fan may be installed, and having at least one suction hole through which air passes; an upper body positioned above the lower body and including a first upper body forming a first inner space that communicates with the inner space of the lower body, and a second upper body forming a second inner space that communicates with the inner space of the lower body and spaced apart from the first upper body; a space formed between the first upper body and the second upper body and opened in a frontward-rearward direction; a first opening formed through a first boundary surface of the first upper body facing the space; a second opening formed through a second boundary surface of the second upper body facing the space; and a door assembly including a first door installed at the first upper body and that opens and closes the first opening, and a second door installed at the second upper body and that opens and closes the second opening.

A portable electric fan is provided and includes a shell, a fan module, and a plurality of combined seat groups. The shell has a first surface, a second surface opposite to the first surface, and a surrounding side surface that is connected to the first surface and the second surface. The shell has a hollow portion. The fan module is mounted in the hollow portion. The combined seat groups are mounted on the surrounding side surface, and each of the combined seat groups includes two bases and a bracket detachably mounted to the two bases. Each of the two bases has a first through hole and a second through hole, and an extending length direction of the first through hole and an extending direction of the second through hole are staggered relative to the surrounding side surface.

A portable electric fan is provided and includes a shell, a fan module, and a plurality of combined seat groups. The shell has a first surface, a second surface opposite to the first surface, and a surrounding side surface that is connected to the first surface and the second surface. The shell has a hollow portion. The fan module is mounted in the hollow portion. The combined seat groups are mounted on the surrounding side surface, and each of the combined seat groups includes two bases and a bracket detachably mounted to the two bases. Each of the two bases has a first through hole and a second through hole, and an extending length direction of the first through hole and an extending direction of the second through hole are staggered relative to the surrounding side surface.

An interface of a centrifugal fan includes an inlet shroud of an impeller and an air intake positioned adjacent the inlet shroud. The inlet shroud and the air intake cooperate to define a smooth flow path for an airflow entering the centrifugal fan.

An interface of a centrifugal fan includes an inlet shroud of an impeller and an air intake positioned adjacent the inlet shroud. The inlet shroud and the air intake cooperate to define a smooth flow path for an airflow entering the centrifugal fan.

A ceiling fan or blade thereof can include a fan motor for rotating the blade. The blade can include an airfoil body having an outer surface extending between a leading edge and a trailing edge, and a root and a tip. The blade can be separated into three distinct cross sections including a first cross section as a lifting cross section, a second cross section as a flat cross section, and a third cross section as a transition section between the first and second cross sections.