Abstract: A motorized operator for moving a barrier, such as an upward acting garage door, between open and closed positions includes a support mounted adjacent one of a pair of barrier guide tracks or along a barrier counterbalance shaft and a drive mechanism mounted on the support and engaged with an elongated flexible member, such as a chain, cable or cog belt. A cog belt, for example, is connected to a drawbar connected to the barrier at one end and the belt is either connected directly to the barrier at the opposite end or to a storage reel supported for rotation on and with a shaft of a barrier counterbalance mechanism. The storage reel may include a spiral groove and be supported on the counterbalance shaft for axial translation to receive and dereel the belt as the barrier is moved between open and closed positions. One or more belt tensioning pulleys may be mounted on the support.

Abstract: An electric motor driven bypass type vacuum cleaner apparatus, particularly adapted for wet/dry debris collection includes an open top debris collection tank having opposed integrally formed cup-shaped feet for supporting said apparatus in a stable position on a support surface. The tank includes a recess in a sidewall and a bottom wall for receiving a conduit member which may be interchangeably used as a connector for connecting a flexible vacuum hose to the tank and as a blower discharge nozzle. A flexible vacuum pickup hose is connected to the conduit member generally at the bottom side of the debris collection tank and, in a stored position on the apparatus, is trained through a recess in the bottom wall of the tank and over the top of a motor housing and shroud assembly to a connection point in one of the support feet adjacent the conduit member. The vacuum hose, when stored, is retained in a recess in the shroud which also serves as a carrying handle for the apparatus.

Abstract: Vacuum cleaning apparatus, particularly adapted for wet/dry cleaning operations includes a powerhead housing assembly formed by an impeller housing for supporting an electric motor which drives a working air impeller and a motor cooling air fan and a cover member removably secured to the impeller housing. The impeller housing and the cover member define flow passages and chambers for diffusing and expanding working air flow to reduce noise emissions therefrom and for directing motor cooling air through the housing assembly without mixing with working air flow and while minimizing the ingestion of working air into the motor cooling air flowpath. An alternate embodiment of the housing assembly includes separable, opposed impeller housing members and a shroud member, all secured together by common fasteners and cooperating to form the working air diffusing and expansion chambers together with the cooling air flow passages.