Abstract: An air distribution blower housing for an air handler such as a residential furnace is designed with a volute-shaped outer wall that has an exponentially increasing expansion angle in the direction of air flow through the blower housing for at least a portion of the volute-shaped outer wall length. This results in the blower housing having an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet.

Abstract: A blower having a blower housing having a cutoff and a top portion with an air outlet opening, a fan within the blower housing, the fan being adapted for rotation about a fan axis and having an outer diameter with a distance between the outer diameter of the fan and the top portion of the air outlet opening extending along a vertical line between the fan axis and the air outlet opening being less than seventy-five percent of the distance between the outer diameter of the fan and the cutoff of the blower housing extending along a line between the fan axis and the cutoff, and a motor having a stator and a rotor, the rotor being rotatably coupled to the stator for rotation about the fan axis, the rotor and fan being coupled such that the fan rotates with the rotor.

Abstract: An air circulator that includes an electronically commuted motor that is devoid of a transformer and utilizes line voltage as the signal voltage. The motor includes a rotatable blade assembly having at least one blade, wherein the blade assembly is connected to the electronically commuted motor, a housing that is operatively connected to the electronically commuted motor and having a line voltage input, and a switch that is secured to the housing and electrically connected to a signal voltage input of the electronically commuted motor and the line voltage input.

Abstract: A combustion air supply blower includes a blower housing having a housing body and housing cover. The cover is removably attached to the housing body and generally provides access to a motor and fan assembly including a fan and a motor. The motor and fan assembly is removably mounted within the housing body and is captured between the housing body and the housing cover such that, upon removal of the housing cover, the motor and fan assembly is exposed and may then be lifted out of the housing body for easy maintenance, repair, and/or replacement of any portion of the motor and fan assembly. Alternatively, upon removal of the housing cover, the motor and fan assembly may be accessed while remaining within the housing body to complete any maintenance and/or repair of the motor and fan assembly.

Abstract: An air handler blower assembly includes a blower housing containing a centrifugal fan and a motor mounted on the blower housing and connected to the fan. The blower housing has opposite first and second air inlet openings that are coaxial with the fan, and the first inlet opening is larger than the second inlet opening. The motor is mounted on the blower housing with the motor extending axially through the first inlet opening into the blower housing and into the interior of the fan. The positioning of the motor inside the blower housing and inside the fan reduces the overall axial dimension of the blower assembly. The larger first air inlet opening reduces the losses associated with placing the motor in the first air inlet opening while keeping the second air inlet opening at a smaller size than the first air inlet opening avoids creating buffeting noise and a power/efficiency loss from occurring.

Abstract: An air distribution blower housing for a furnace is designed with an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet. The enlarged air outlet opening of the blower housing is achieved without increasing the exterior diameter dimensions of the blower housing by utilizing a volute outer wall of the blower housing that has an exponentially increasing expansion angle in the direction of air flow through the blower housing.

Abstract: An air distribution blower housing for an air handler such as a residential furnace is designed with an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet. The enlarged air outlet opening of the blower housing is achieved without increasing the exterior diameter dimensions of the blower housing whereby the blower housing is used in a compact enclosure for residential use. This is accomplished by utilizing a volute outer wall of the blower housing that has an exponentially increasing expansion angle in the direction of air flow through the blower housing.

Abstract: An air distribution blower housing for a low profile air handler such as a residential furnace is designed with a volute-shaped outer wall that has an exponentially increasing expansion angle in the direction of air flow through the blower housing for at least a portion of the volute-shaped outer wall length. This results in the blower housing having an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet.

Abstract: An air distribution blower housing for an air handler such as a residential furnace is designed with a volute-shaped outer wall that has an exponentially increasing expansion angle in the direction of air flow through the blower housing for at least a portion of the volute-shaped outer wall length. This results in the blower housing having an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet.

Abstract: An air distribution blower housing for an air handler such as a residential furnace is designed with an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet. The enlarged air outlet opening of the blower housing is achieved without increasing the exterior diameter dimensions of the blower housing whereby the blower housing is used in a compact enclosure for residential use. This is accomplished by utilizing a volute outer wall of the blower housing that has an exponentially increasing expansion angle in the direction of air flow through the blower housing.

Abstract: An air distribution blower housing for a furnace is designed with an enlarged air outlet opening that slows down and spreads out the air flow from the blower housing over a greater area of the furnace heat exchanger. The blower housing thereby enables less air pressure drop through the heat exchanger, which increases the efficiency of the blower motor operation. The design of the blower housing also efficiently turns the velocity head of the air flow through the housing to usable static air pressure at the housing air outlet. The enlarged air outlet opening of the blower housing is achieved without increasing the exterior diameter dimensions of the blower housing by utilizing a volute outer wall of the blower housing that has an exponentially increasing expansion angle in the direction of air flow through the blower housing.

Abstract: A combustion air supply blower includes a blower housing having a housing body and housing cover. The cover is removably attached to the housing body and generally provides access to a motor and fan assembly including a fan and a motor. The motor and fan assembly is removably mounted within the housing body and is captured between the housing body and the housing cover such that, upon removal of the housing cover, the motor and fan assembly is exposed and may then be lifted out of the housing body for easy maintenance, repair, and/or replacement of any portion of the motor and fan assembly. Alternatively, upon removal of the housing cover, the motor and fan assembly may be accessed while remaining within the housing body to complete any maintenance and/or repair of the motor and fan assembly.

Abstract: A furnace blower housing that can be flush mounted to a furnace and includes an integrally formed round exhaust outlet. The blower housing is formed from two separate housing members joined to each other. The blower housing includes an impeller cavity that encompasses a rotating impeller that directs the exhaust gases out of a rectangular outlet. An integrally formed transition section extends from the rectangular outlet to a circular exhaust outlet. The transition section is formed by a bottom half integrally formed with the first housing member and a top half integrally formed with the top housing member. The exhaust outlet is offset from the back plate of the blower housing such that the blower housing can be flush mounted to a furnace.

Abstract: A battery operated grease gun includes a pump mechanism that employs a speed reducing and torque increasing planetary gearing transmission which rotates a final driver that is a part of the transmission, and a sliding yoke that is reciprocated by the final driver and is coupled to a plunger that dispenses the grease under pressure where the plunger is mounted to the yoke for relative movement therebetween.

Abstract: An air operated liquid pump includes a pump with a reciprocating plunger driven by a piston contained in a cylinder. The plunger is connected to and reciprocates a dispensing piston that moves between two positions relative to the plunger to open and close flow through valve holes that pass through the dispensing piston.

Abstract: A hose reel assembly for taking up and feeding out a hose. The assembly includes a non-rotatable shaft having opposite ends, a reel for storing the hose rotatable on the shaft and a hub mounted on the shaft at one side of the reel between the reel and one end of the shaft so that the hub may be slidably applied to and removed from the shaft independent of the reel. The assembly further includes a coupling on the hub for connecting the hub and the hose. The shaft and the hub include passaging for supplying fluid to the hose. A seal is provided between the shaft and the hub adjacent to the passaging for preventing fluid leakage. The hub is releasably connected to the reel for conjoint rotation of the hub and the reel on the shaft and is disconnectable from the reel so that the hub may be removed from one end of the shaft to permit replacement of the seal without removing the reel from the shaft.

Abstract: An automatic air operated grease gun comprising a reciprocating grease plunger for ejecting grease, and a piston, connected to the plunger, for operating the plunger. The piston is slidably mounted in a cylinder to move between a retracted position and an advanced position. A return spring resiliently biases the piston to its retracted position. A switch selectively connects the cylinder to a source of gas under pressure to advance the piston against the return spring. The piston has a plurality of apertures therein, each aperture having an individual seal, and a release for opening the individual seals to relieve the pressure behind the cylinder and allow it to retract under the force of the return spring.

Abstract: An improved strut spring compression tool is provided having a load screw that extends between pairs of arms that are engaged with spaced coils of a strut spring to be compressed. The improved load screw is provided with a stop block formed unitarily thereon. The stop block serves as a limit stop that prevents further adjustment of the arms of the spring compression tool toward each other that could potentially result in damage to the component parts of the strut spring compression tool.

Abstract: A pressure control system, including a pilot valve suitable for use therein, for providing a constant pressure from a non-compensated pump to a plurality of nozzle valves controlling flow from a manifold to nozzles associated with the valves, including a pressure control valve interposed between the pump and the manifold which is response to a control pressure created by a pilot valve which reduces manifold pressure to the control pressure.