Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7563160 | Ventilating apparatus A ventilating apparatus is disclosed, by which an installation of the apparatus is conveniently facilitated. The present invention includes a blower device supplying an outdoor air to an indoor space and discharging an indoor air to an outdoor space, a heat exchange... | 07/21/2009 |
| 6948553 | Modular heat recovery ventilation system A modular heat recovery ventilation system includes a modular heat exchanger and a modular apparatus spaced from the heat exchanger for delivering both fresh air and exhaust air to the heat exchanger. The apparatus includes separate blowers for generating two separa... | 09/27/2005 |
| 6287191 | Combination bath fan, register box, air conditioning and heating boot A combination bath fan, register box, air conditioning and heating boot requires one opening on the wall or the ceiling of the bathroom, thus reducing the installation and maintenance costs associated with the ventilation of the bathroom. The combination ... | 09/11/2001 |
| 5934362 | Combination bath fan, register box, air conditioning and heating boot A combination bath fan, register box, air conditioning and heating boot requires one opening on the wall or the ceiling of the bathroom, thus reducing the installation and maintenance costs associated with the ventilation of the bathroom. The combination ... | 08/10/1999 |
| 5788571 | Method of venting smoke from highrise residential buildings In highrise residential buildings, venting to remove smoke from corridors is required in case of fire. A method of venting smoke from a multi-floor building by providing a single supply and exhaust venting shaft communicating with each floor, with an air ... | 08/04/1998 |
| 5435377 | Ventilator with air-to-air heat exchanger and pressure responsive damper A ventilator for clothes dryers and the like includes a counterflow heat exchanger through the wall of the building containing the apparatus, with an entry passage for ambient air entering the building and an exist passage for heated waste air leaving the... | 07/25/1995 |
| 5009685 | System for improving the work environment in a contaminated room A system for improving the work environment in a contaminated room while contaminated material, such as asbestos, is being removing therefrom, including a dressing room adjacent the contaminated room, a decontamination unit connecting the dressing room wi... | 04/23/1991 |
| 4955997 | Flush mounted ceiling air cleaner An air cleaner device with the return grill and supply grill separated by a length of flexible insulated hose. The length of separation is sufficient to achieve maximum air circulation within the room. Multiple supply grills may be used to achieve more ex... | 09/11/1990 |
| 4890546 | Ventilation cowl A ventilation cowl for arrangement on a house roof. The cowl comprises a plate-shaped member which is adapted to form an abutment against the roof and which is designed with one or more openings for the reception of air ducts. The cowl further comprises a... | 01/02/1990 |
| 4765231 | Smoke exhausting air conditioning system Harmful smoke is drawn from rooms in an air conditioned building by way of duct work which supplies conditioned air to the rooms during normal operation. When a potentially harmful level of smoke is detected, supply fan motors associated with the duct wor... | 08/23/1988 |
| 4665805 | Apparatus for counterflow air to air generative heat exchange and ventilating a room space Apparatus for recovering heat or cooling from a room space and ventilating it, consisting of heat accumulators in which the outgoing air releases its heat and from which the incoming air picks up heat or vice versa and which are alternatively connected by... | 05/19/1987 |
| 4079665 | Wall mounted ventilator A ventilator adapted for wall mounting use in ventilating buildings such as agricultural buildings and the like used for housing livestock, and having inlet and exhaust duct means, located one above the other, and adapted to be mounted in the wall of the ... | 03/21/1978 |
| 3945306 | Integrated ceiling light and air-circulation arrangement In the room of a building, a channel extends across above ceiling level and supports ceiling panels which form the ceiling itself, part of the channel being concealed by ceiling panels extending beneath the channel. Lighting elements are mounted in the ot... | 03/23/1976 |
