| Patent Number |
Title Of Patent |
Date Issued |
| D328342 |
Humidifier |
July 28, 1992 |
|
| D322122 |
Humidifier casing |
December 3, 1991 |
|
| D306088 |
Wall outlet box for a central vacuum cleaning system |
February 13, 1990 |
|
| 6572085 |
Humidifier with reversible housing and distribution tray overflow |
June 3, 2003 |
| A humidifier features a two piece reversible housing which is snap fit together for holding a water panel assembly and a water feed tube to supply water to a water distribution structure disposed on top of the water panel assembly. The water panel assembly is provided with an overflo |
| 6543282 |
Air flow detection apparatus |
April 8, 2003 |
| An air flow detection apparatus useful in operating an accessory item in an HVAC system includes a sensor printed circuit board assembly having a first thermistor adapted to be exposed to an air flow and associated with a first pair of heating resistors. A second thermistor is placed in |
| 6367782 |
Water distributor |
April 9, 2002 |
| A water distributor provides a uniform supply of water to an evaporative panel held in a frame of an evaporative apparatus. The water distributor includes a base having a plurality of flow channels, each of the flow channels having an inlet port for receiving water from a source, an outl |
| 6192931 |
Damper blade control |
February 27, 2001 |
| A device for controlling the movement of a damper mounted in a housing includes a shaft rotatably secured to the damper for pivoting the damper between an open position and a closed position. A lever arm is mounted on the shaft for rotation therewith and a spring is connected between the |
| 6021955 |
Method and apparatus for controlling the speed of a damper blade |
February 8, 2000 |
| A device for controlling the movement of a damper mounted in a housing between an open position and a closed position comprises a shaft rotatably secured to the damper for pivoting the damper between an open position and a closed position. A lever arm is mounted on the shaft for rotation |
| 6000684 |
Evaporative wicking pad |
December 14, 1999 |
| A gas-pervious, liquid-gas contact pad comprises a reticulate body of water-permeable or wettable material having a large area of surfaces exposed for humidification purposes or the like. A plurality of slit and expanded sheets of wicking paper are connected in superposed and alterna |
| 5716115 |
Door assembly for air filter housing |
February 10, 1998 |
| A selectively removable door assembly is provided for completing an air filter housing having a series of interconnected walls for enclosing an air filter, certain of the walls being formed with retaining pockets. The door assembly comprises a door having a main portion and opposed end |
| 5655825 |
Latch arrangement for air filter housing |
August 12, 1997 |
| A one-piece framework for holding the filter media of an air filter includes a pair of end walls integrally connected to a pair of frame members by a living hinge so that they may be pivotally moved between an assembled position and an unassembled position. A pair of sidewalls are in |
| 5609937 |
Frame for attachment to air filters |
March 11, 1997 |
| A frame for a panel-like filter having two sides terminating in an edge comprises a semi-resilient deformable channel having an inwardly curved web with two flanges extending from a convex side thereof. The curved web also has a longitudinally extending stiffening rib projecting from the |
| 5500271 |
Paint arrestor formed from slit sheet material |
March 19, 1996 |
| A paint arrestor for absorbing paint overspray comprises a series of layers of sheet material, each of the layers being slit and expanded to define an array of air spaces distributed in columns. The air spaces alternate in size from column to column and repeat in size in every other colu |
| 5484125 |
Appliance mounting system |
January 16, 1996 |
| A mounting system for suspending an appliance from a supporting structure includes an elongated U-shaped bracket and a plurality of fasteners for securing the bracket to a supporting structure. A mounting pin is disposed toward one end of the bracket and a mounting hook is disposed towar |
| 5322117 |
Heat exchanger media frame |
June 21, 1994 |
| A corner frame construction for a heat exchanger includes an elongated L-shaped member disposed between the top and bottom plates of the heat exchanger. The L-shaped member has a first leg extending parallel to a first edge of the media layers and a second leg extending perpendicular to |
| 5302174 |
Multi-unit grease filter |
April 12, 1994 |
| A multi-unit grease filter includes a first filter unit and a second filter unit, each having an upstream series of spaced apart elongated baffles and a downstream series of spaced apart elongated baffles offset from the upstream series of baffles so that the baffles overlap and expose t |
| 5273564 |
One piece filter media framework |
December 28, 1993 |
| A one piece framework for holding the filter media of an air filter includes a pair of end walls integrally connected to a pair of frame members by a living hinge so that they may be pivotally moved between an assembled and unassembled position. A pair of side walls are integrally co |
| 5252260 |
Humidifier electrical control assembly |
October 12, 1993 |
| An electrical control assembly for a humidistat controlled humidifier of the type having a base connected to the furnace ductwork and a cover removably connected to the base includes a control circuit board having a primary circuit for operation of the fan and a secondary circuit for |
| 5211891 |
Evaporative pad frame |
May 18, 1993 |
| A frame for holding an evaporative pad in the base of a humidifier includes side walls, base and a top that define an evaporative pad holding chamber. Each of the side walls, base and top is provided with a flange that extends inwardly toward the opening and is engageable with a lip on t |
| 5207020 |
Biodegradable slit and expanded erosion control cover |
May 4, 1993 |
| An erosion control blanket is made of recycled, biodegradable slit and expanded sheets of paper. A plurality of layers are provided and are oriented such that the slope of the baffles in the grid pattern of the paper may be disposed in a positive or negative direction relative to the |
| 5183488 |
Multi-stage filter frame assembly |
February 2, 1993 |
| A multi-stage filter assembly having a number of filter media layers, at least one of which is removably mounted to a filter frame, utilizes a retaining clip to hold the filter media in place. The retaining clip is in the form of an elongated strip that extends across the filter media an |
| 4706808 |
Humidistat with improved mounting |
November 17, 1987 |
| A humidistat (17) generally includes a humidity sensing cartridge (20) adapted to be enclosed within a housing (18) having a base (21) and a front cover (22). The cartridge includes a plurality of engageable portions (24, 28). The housing base includes a peripheral frame (34) which s |
| 4701196 |
Air filter assembly |
October 20, 1987 |
| An air filter assembly (1) includes an outer casing (6) having end, rear and downstream portions which are generally planular and thus easily settable on the floor during installation, with the downstream portion being mountable flush to a furnace (3) or the like. An inner filter-hol |
| 4693048 |
Media support module for paint spray booths and the like |
September 15, 1987 |
| In accordance with the various aspects of the invention, a spray booth media support module (1) includes a rectangular frame (5) which is of generally channel section. The frame forms opposing spaced end members (7) and connecting side members (8). One frame end has an inwardly bent lip |
| 4688596 |
Wall outlet box for central vacuum cleaning system |
August 25, 1987 |
| A cutout (4) is made in a room wall (2) and flexible tubing (13) connected to a vacuum conduit (12) is pulled therethrough. A box (1) is attached to the tubing and includes a frame portion (15) for surrounding the cutout, and inwardly recessed portion (18) having side and top and bottom |
| 4559789 |
Variable cycle moisturizing control circuit for a gas-liquid contact pad |
December 24, 1985 |
| The invention provides a variable cycle moisturizing control circuit for a gas-liquid contact pad (8, 18) in humidifiers (1), precoolers (17) and the like, supplied with fluid from a solenoid valve (34). Temperature sensitive electric circuit means (FIG. 4) cyclically actuates the valve |
| 4349012 |
Solar heating control |
September 14, 1982 |
| A solar heating control is adapted to be interconnected to a pre-existing auxiliary heating system connected to operate in response to a command signal issued by a pre-existing thermostat. The control operates in response to a first temperature sensed within the solar heating system to |
| 4347197 |
Water distributor |
August 31, 1982 |
| A water distributor is disposed above an air-liquid contact pad, and is supplied with water from a supply line. The water is received within an elongated enclosed chamber having at least one elongated corner in its lower portion. A floor portion of the chamber is formed of an imperferate |
| 4338266 |
Device for conditioning air with improved gas-liquid contact pad |
July 6, 1982 |
| A device for conditioning air has a pad formed of a plurality of layers of slit and expanded media, with the pad having a plurality of groups of layers therewithin. Each layer within a particular group of layers has its baffles oriented to face in the same direction, while each group is |
| 4286213 |
Energy sensor |
August 25, 1981 |
| A removable energy sensor for sensing the flow of electrical energy through a current carrying conductor. A magnetic flux conducting circuit includes a U-shaped bracket providing an opening for removably retaining a conductor while a removable pin is retained within openings at the outer |
| 4281638 |
Damper for solar heating systems and the like |
August 4, 1981 |
| A damper assembly for solar heating systems and the like includes a damper blade pivotably mounted to a peripheral main frame. The damper blade is surrounded by a peripheral flexible sealing element which extends inwardly from the surrounding frame and which is inclined in a direction ag |
| 4240072 |
Load indicator for an air cleaner |
December 16, 1980 |
| A load indicator for an air cleaner associated with an air movement system which conducts air to a designated area in response to the supply of electrical energy from an energy source. An energy sensor includes a closed loop flux conducting circuit which is removably connected to sur |
| 4042358 |
Filter media |
August 16, 1977 |
| An air filter is formed into an accordion-shaped body having reverse folds forming pockets. A plurality of string-like pleat spacing members are provided and with each member being threaded through a plurality of openings in the pocket walls. The openings are smaller in diameter than |
