Abstract: A lifting device for a portable air purifying unit that includes a rectangular main support member for supporting all the component parts of the unit so that they are balanced about the support. A housing comprising a top cover and front and rear covers is attached to the support for enclosing the unit. The top cover is coextensive with the top wall of the support and contains a raised partition that extends laterally across the cover. A hand-hold passes through the center of the partition that opens into an enclosure mounted on the cover in front of the partition. The hand-hold and the chamber combine to form a handle. The front cover of the housing passes over the handle to partially shield the handle thereunder.

Abstract: An air handling unit that includes a main support member and front, rear and top covers mounted on said support that forms a housing for enclosing said unit. The covers have side walls that close over the support frame in abutting contact to form an interlocking seam therebetween at closure. Ribs are mounted upon the side walls of the support frame which bias the side walls of the covers outwardly to render the seam relatively air tight at closure. Two covers are securely affixed to the main support member while the other is removably attached to the main support member by a latching means. A HEPA filter is mounted in the main support member along with a blower system for drawing air through said housing.

Abstract: Apparatus for closing the front of an air purifying unit that includes a main support frame upon which is secured a rear cover and a top cover. A removable front cover is arranged to pass over the front section of the support frame and closes against the top and rear cover. A latching device acts between the support frame and the top cover to secure the cover to the frame. Biasing members are mounted upon the support frame for urging the walls of the front and rear covers outwardly and guiding the covers into edge to edge alignment.

Abstract: Apparatus for aligning and mounting a circuit board in a confined space that includes a pair of mounting pads extending outwardly from a wall. A tab is mounted on the wall over the pads so that a circuit board can be received between the pads and the tab. A rest mounted apart from the wall for supporting the board in a desired plane and a fastener for securing the board to the rest.

Abstract: Apparatus for retaining electrical cords of varying thickness within an open top channel. Retaining members are mounted alternately on each of the side walls of the channel each having steps that include a top step adjacent the bottom wall of the channel and a bottom step adjacent the open top of the channel. A service cord having a first thickness can be friction fitted between the top step of each member and the opposite side wall of the channel. Similarly a service cord having a greater thickness can be friction fitted between the bottom step of each member and the opposite side wall of the channel.

Abstract: A filter assembly for use in an air purifier unit having a rectangular shaped air inlet entrance to the unit blower. A rectangular shaped frame containing a HEPA filter pack is slidably received within the blower inlet. An L-shaped flange surrounds the filter frame and closes against the air inlet of the blower to provide an air seal. The top wall of the flange is offset some distance from an adjacent wall of the frame to provide a handle for the filter assembly.

Abstract: A bulb mounting for air handling equipment indicator bulbs that include at least a lamp base having a top flange. The mounting includes an air handling equipment support member having a hole, and retaining surface disposed a predetermined distance above an equipment support wall, that slidably receives the lamp base so that the flange rests on the retaining surface. The mounting further includes a top cover having an opening large enough to receive the bulb, and a tube shape that presses the flange against the retaining surface. The cover top side is disposed a predetermined distance above the flange, so that the bulb is positioned and secured a precise distance relative to the top of the cover and the equipment support wall.

Abstract: According to the present invention a one-piece molded strain relief structure for an electrical conductor is provided which includes a body portion having a tortuous path directly molded therein for receiving and guiding the conductor. The tortuous path includes an entrance and exit and further includes at least two changes in direction therealong. In a preferred embodiment the tortuous path is substantially S-shaped and is adapted to receive an electrical conductor having a flat cross section. The tortuous path is configured to confine the flat electrical conductor in a first orientation adjacent the entrance thereof and to cause twisting of the conductor to a second orientation angularly disposed from the first orientation as it approaches the exit thereof. A guide is provided adjacent the exit for imparting a sharp bend in the conductor as it passes therefrom.

Abstract: An adjustable louver assembly including a box like member having a plurality of longitudinal extending parallel louvers. The outer most of the louvers forming the top and bottom thereof and further including lateral sides interconnecting the top and bottom louvers. The box has an open front and back side and includes a plurality of vertical ribs, having a circular cross section, which interconnect each of the horizonal louvers. A plurality of planar air deflectors having complimentary means formed on a vertical edge thereof are adapted to engage one of the vertically extending ribs to thereby mount the deflectors for pivotal movement about the rib with the deflector extending perpendicular to the horizonal louvers.

Abstract: An air conditioning unit including a basepan upon which is mounted an indoor section in communication with the space to be conditioned. The indoor section includes an indoor heat exchanger and means for circulating air to be conditioned in heat exchange relation with the indoor heat exchanger. Also mounted on the basepan is an outdoor section in communication with ambient air and including an outdoor heat exchanger and a compressor. A partition forms a part of the basepan and divides the air conditioning unit to separate the indoor section from the outdoor section. The partition is provided with a partition opening therethrough. Refrigerant carrying lines extend between the indoor section and the outdoor section through the partition opening. An elongated section of insulating material circumferentially encloses the refrigerant tubes in the region in which they pass through the partition opening.

Abstract: A window air conditioner of the type having a basepan having a vertically extending partition which divides the unit into indoor and outdoor sections. The partition has a horizontally extending rib formed at the upper end thereof. The indoor section includes an evaporator coil at the front of the basepan, and a condensate pan mounted in the basepan under the evaporator coil. An evaporator fan scroll is mounted in the basepan rearwardly of the evaporator coil and is positioned by cooperation with the condensate pan and the partition. A control box is mounted in the indoor section overlying a portion of the condensate pan and has an upper surface which engages the horizontal rib formed in the partition. An indoor fan motor is mounted within the control box and drives an indoor fan which has an axis of rotation which extends parallel to the basepan and the partition, and which is spaced from the interior surface of the scroll.

Abstract: A condensate disposal system for an air conditioning unit of the type where moisture removed from inside air being cooled and dehumidified is conducted to a condensate collector in an outside section of the air conditioner. The system includes a condensate slinger which extends into the condensate collector to pick up and distribute condensate collected therein into contact with the units condenser coil. The condensate slinger is of the type including a truncated conical cup having an upper and lower end and a sloping conical wall extending from the upper to the lower end and surrounding an interior volume. The cup includes a bottom closing the lower end which has passages therein to allow condensate to flow into the interior volume. The passages in the bottom of the condensate slinger comprise circular openings extending from an inner surface to an outer surface thereof.

Abstract: A control box assembly for use in an air conditioner of the type having an enclosure which includes a basepan and an outer housing. The air conditioner has an inside section and an outside section in the enclosure which are divided by a partition which forms a part of the basepan. The outside section includes an outside heat exchanger, a compressor, and an outside fan driven by an outside fan motor. The inside section includes an inside heat exchanger and an inside fan driven directly by an inside fan motor. The control box assembly includes a molded plastic box having an open end which has mounted therein the control switches for the compressor and the outside and inside motors. Inside fan motor is mounted and supported within the control box. A molded plastic cover is adapted to snap fit onto the control box to cover the opening and further support the inside fan motor.

Abstract: An indoor grille for a window room air conditioner of the type which has an indoor basepan which includes a downwardly extending horizontal rib on its underside. The unit includes a discharge deck at the upper side which substantially defines the entire upper indoor cover of the unit. The discharge deck has left and right ends thereof each of which is in vertically spaced relation with a precision located structural portion of the unit. Each of the structural portions is provided with a protrusion extending vertically upward therein in the space defined between the deck and the structural portions. The inlet grille includes a front wall and left and right hand wall portions integrally formed therewith. A lower flange extends from each of the front, left and right hand walls to extend beneath the basepan. An upper flange portion is provided extending from the upper edge of both the left and right hand walls.

Abstract: Apparatus is provided for mounting a thermostat capillary in close proximity to the inside face of the indoor heat exchanger of a room air conditioner. The air conditioner includes a thermostat mounted in operational proximity to the heat exchanger which has a capillary extending therefrom. The indoor heat exchanger includes a flat surface adapted to receive a flow of air therethrough and having a pair of tube sheets at opposite ends thereof. One of the tube sheets is adjacent the capillary. Both of the tube sheets extend forwardly from the flat surface of the indoor heat exchanger a distance at least as far as the thickness of the capillary. The tube sheet adjacent to the capillary has a recess formed therein to receive the capillary.

Abstract: A room air conditioner of the type having an indoor section and outdoor section which are supported by a basepan and separated by a partition. The indoor section includes an indoor fan and an evaporator. The cold evaporator condenses moisture from the air to be cooled. Means are provided to collect the condensate and to conduct it along a path from the indoor section, through an opening in the partition, at basepan level, to the outdoor section. The opening in the partition has a given height from the basepan which is sufficient to allow condensate flow, and a given width. A hood is provided adjacent to the opening on the outdoor side of the partition wall which extends from the top of the opening downwardly a distance less than the given height of the opening. The hood completely encloses the given width to thereby define a lower edge under which water or air must pass to pass through the condensate opening.

Abstract: An electrical grounding system for an air conditioner which has substantially all components, except electrical and refrigeration circuit components, made from an electrically insulating material. The air conditioners indoor section includes a metal indoor heat exchanger and an indoor fan motor. The outdoor section includes a metal heat exchanger, an outdoor fan and a compressor. The indoor heat exchanger, outdoor heat exchanger and compressor are connected by electrically conducted tubing. A plastic electrical control box is mounted in the indoor section. The electrical control box has an electrically conductive grounding plate mounted in the interior thereof. Means are provided for interconnecting the ground lead from the units power service cord to the grounding plate. All electrical controls and other components in the indoor section are grounded directly to the grounding plate. An outdoor section grounding lead electrically interconnects the grounding plate with the outdoor heat exchanger.

Abstract: A window type portable air conditioner has a partition plate and orifice plate designed to assemble by snapping together, eliminating the need for other parts or fasteners, while ensuring accurate orifice location. The orifice plate has integrally formed lower support arm and upper support posts. The partition plate has tongue and tab structure formed thereon to engage and interlock with receiving structure formed at the distal ends of the support arm and posts.

Abstract: A retractable carrying handle for a room air conditioning unit that is easily assembled with the main structural member of the unit to provide a high strength, safe means for installing and removing the unit from a window frame or the like for transporting the unit from place to place.

Abstract: A unitary molded grill cover is provided for the indoor side of a window type air conditioner. The grille cover is installed without tools or fasteners. A transverse flange on the grille cover top wall is positioned into a groove or slot on the discharge deck, and the grille cover is snapped into place with the bottom wall thereof extending beneath the base pan of the unit. Bosses on the base pan project into corresponding holes in the grille cover bottom wall to retain the grille cover in place. The evaporator fan aperture plate and the discharge deck are also installed without tools or additional fasteners.