Abstract: A vibration isolation mount for mounting an electric motor to a device support structure includes a body having a motor-engaging end and a mount end and a central axis. A screw fastener extends from the motor-engaging end and is coaxial with the central axis of the body. A threaded bushing extends into the body at the mount end thereof. In a method of use, the vibration isolation mount is secured to a motor support structure of the electric motor by driving the screw fastener into the motor support structure. The electric motor is mounted to a device support structure by driving a fastener through the device support structure to mate with the threaded bushing of the vibration isolation mount.

Abstract: A motor-fan unit includes a thermal device serving to monitor the operating temperature of the motor-fan unit. The thermal device is secured to the motor-fan unit through a frictional fit between the thermal device and a cavity provided in an end plate assembly and the field laminations of the motor-fan unit.

Abstract: The present invention generally provides a motor-fan unit including a motor assembly having a shaft, a commutator supported on the shaft, and a pair of brushes in electrical contact with the commutator, a fan assembly having an impeller coupled to tile shaft, an end plate assembly located between the impeller and the motor assembly, said end plate assembly including a plate portion defining an opening throughwhich the shaft passes, wherein said commutator is located near the opening, and a pair of brush retainers adapted to receive the brushes formed on the plate portion adjacent said commutator, the brush retainers opening toward the fan assembly.

Abstract: An air diffuser for a motor-fan unit having reduced blade passage frequencies, and reduced noise generation, includes a baffle plate, external vanes, internal vanes, diffuser ports, and a central opening. The baffle plate of the diffuser is made integral with the internal and external vanes, such that any leaking, rattling, or pure tone noise that may be generated from air movement over the surface of the diffuser are prevented or reduced. Additionally, the number of internal and external vanes provided by the diffuser is that equal to a prime number, thus resulting in a reduction of harmonic and pure tone noise generated during the operation of the motor-fan unit.

Abstract: A low-noise air moving motor assembly includes a motor assembly having a rotatable shaft, a fan assembly coupled to the rotatable shaft which generates an airflow that passes over at least a portion of the motor assembly. A self-extinguishing flame and noise suppression sleeve is at least partially disposed around the motor assembly. Ideally, the sleeve is a 94 V-0 rated foam material. The fan assembly includes a fan secured to the shaft, a diffuser/bracket assembly coupled to the motor assembly which rotatably receives the shaft. A fan shroud is secured to the diffuser/bracket assembly, wherein rotation of the fan draws air in through the fan shroud and out the diffuser/bracket assembly, the diffuser/bracket assembly having at least one foam piece coupled to curvilinear vanes reduce the noise of air flowing therethrough.

Abstract: Apparatus for double insulation of a motor output shaft and providing physical coupling which includes an elongated plastic resin member that includes apparatus for coupling to an associated motor shaft and apparatus for cooperation with an associated power transmission apparatus. In some forms of the invention the apparatus for cooperation with an associated power transmission apparatus includes opposed flat surfaces. In other forms of the invention the apparatus for cooperation with an associated power transmission apparatus includes apparatus for engaging a belt. The appatatus for engaging a belt may include two coaxial truncated cones disposed with the respective larger diameter ends thereof in end abutting relationship to define a crowned axial section. In other forms of the invention the apparatus for engaging a belt includes two axially aligned truncated conical sections disposed with the respective smaller diameter ends thereof disposed in end abutting relationship.