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 |
| 5231955 | Thermostatic valve arrangement A thermostatic valve arrangement for a coolant control of an internal-combustion engine, having a thermostatic working element which is assigned to the coolant flow and the working piston of which is supported on an abutment which can be adjusted by an ad... | 08/03/1993 |
| 5183012 | Thermostatic valve In the case of a thermostatic valve for a coolant control of an internal-combustion engine, it is provided that a connecting element is provided which is made of a material having a low thermal conductivity so that a thermal uncoupling takes place between... | 02/02/1993 |
| 5071064 | Shape memory actuator smart connector A pivotal electrical connector for connecting a shape memory alloy element in the form of a coil spring to a fixed member, the connector including a strip of electrically conductive material having a clip or a pair of legs for securing the connector to on... | 12/10/1991 |
| 4979672 | Shape memory actuator A shape memory actuator for controlling the position of a control member, such as a damper plate in a duct, the actuator including first and second shape memory elements each having an austenite phase transition temperature above which each element assume... | 12/25/1990 |
| 4681296 | Valve construction and method of making the same A valve construction and method of making the same are provided, the valve construction comprising a housing, a valve seat carried by the housing, a movable lever carried by the housing and having an opening passing through opposed sides thereof, a valve ... | 07/21/1987 |
| 4580719 | Thermostatic control device The specification discloses a thermostatic control device for controlling the flow of a pressurized fluid. A housing having a plurality of flow-through apertures encloses a valve which is movable between a seated and an open position. The valve is operabl... | 04/08/1986 |
| 4471906 | Thermostatically controlled trap A thermostatically controlled trap provided that one end of a valve pushrod comes in direct contact with a ball valve when the valve pushrod is subjected to axial motion by the expansion of a thermosensitive member caused by a change in the temperature of... | 09/18/1984 |
| 4427149 | Bi-metallic steam trap A steam trap having a thermostatically controlled bimetallic valve for discharging condensate from steam lines is disclosed. The steam trap has a housing having a fluid inlet port, a fluid outlet port, and valve means within said housing between the inlet... | 01/24/1984 |
| 4386731 | Damper construction for a gas fired combustion apparatus A thermally controlled damper construction for a gas fired combustion apparatus such as a furnace, water heater or the like, is described. The damper is pivotally mounted within the stack of the combustion apparatus for pivotal movement from a closed posi... | 06/07/1983 |
| 4347975 | Bimetallic-controlled steam trap A steam trap is provided with a bimetallic control element disposed at the prepressure side and a locking element actuated by the bimetallic control element which is biased in the opening direction by the prepressure and which cooperates with a valve seat... | 09/07/1982 |
| 4327863 | Bimetallic controlled steam trap A steam trap includes a housing having an inner chamber, a feed opening and a discharge opening disposed adjacent to one another and communicating with the inner chamber, and a control unit disposed in the chamber including at least one bimetallic plate, ... | 05/04/1982 |
| 4320871 | Bimetallic column A bimetallic column for temperature detection operating devices such as a steam trap, comprising a guide tube secured at its one portion to a counter part of a control stem and slidably extending through a center hole of the bimetallic column and projecti... | 03/23/1982 |
| 4294401 | Draft control arrangement A draft control arrangement for use with a gas-fired heating apparatus. The flow of waste gas through a draft hood of the apparatus is throttled by bimetal element means which responds to temperature change for reducing or enlarging the throttle area. Con... | 10/13/1981 |
| 4283006 | Thermally-activated closure device In an embodiment thereof, the closure device comprises a leaf-type, planar, closure element pivotally coupled to a supporting shaft. The shaft is fixed in traverse of a fluid conduit, and the closure element is rotatable therewithin for opening and closin... | 08/11/1981 |
| 4247041 | Thermally responsive valve device A thermally responsive valve device comprises a body member having an inlet port and outlet ports, a first passage communication between the inlet port and one of the outlet ports, a second passage communication between the inlet port and the other of the... | 01/27/1981 |
| 4245778 | Vent control arrangement for combustion apparatus A vent control arrangement for energy conservation having bimetallic damper elements mounted in a draft hood which forms an integral part of the heating apparatus. The bimetallic elements open and close the flow passage for vent gases from the combustion ... | 01/20/1981 |
| 4239177 | Electrically operated valve with balanced port design A regulator valve having a balanced port construction is provided with a balanced piston design, the piston being operated under positive control in all valve positions. The piston regulates fluid flow through the valve. The piston is operatively connecte... | 12/16/1980 |
| 4141495 | Draft control arrangement for combustion apparatus The combustion gases of a burner in a heating furnace are discharged to a vent through a draft hood having three ports. The first and second ports communicate with the furnace and the vent respectively and define a first flow path for combustion gases thr... | 02/27/1979 |
| 4026464 | Dual function thermal valve An improved, dual function, thermal valve assembly has three ports and two passages connecting these three ports to a common chamber. The assembly employs two thermally responsive actuating members which are actuable to move a valve plug in the chamber at... | 05/31/1977 |
| 3985296 | Steam trap with bimetal valve control The valve of a steam trap is opened and closed by operation of a temperature sensitive bimetallic assembly having a stacked configuration with individual bimetallic members of the stacked assembly moving between a first and a second position in response t... | 10/12/1976 |
| 3967781 | Electrically operated expansion valve for refrigeration control An expansion valve for a refrigeration system is provided in which the flow through the expansion valve is controlled electrically. The preferred valve embodiment utilizes a straight line configuration in that a valve body is mounted within a suitable she... | 07/06/1976 |
| 3952796 | Temperature control system An automatic temperature responsive control valve is disclosed for use in combination heating and cooling systems including two concentric valve sleeves each rotating individually in the valve body under the control of respective bimetallic transducers on... | 04/27/1976 |
