Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7328593 | Refrigerant valve arrangement A refrigerant valve arrangement is described, having a housing which has a first functional space, in which there is arranged at least one functional element, which co-operates with a first annular contact surface formed in an internal boundary wall. It is desirable... | 02/12/2008 |
| 7311005 | Method and device for continuous measuring of dynamic fluid consumption, including pressure regulator In a method for continuous measuring of dynamic fluid consumption, particularly fuel, the pressure beyond the flow sensor is adjusted to a constant value by means of a pressure regulator by using a continuously-operating flow sensor with variable pressure drop, pref... | 12/25/2007 |
| 7246941 | Sensing media temperature in an HVAC valve An apparatus and method are provided for determining the temperature of an operating fluid media in an HVAC system. An integral temperature sensor, mounted within an actuator of an actuator-driven HVAC valve, senses the temperature of a valve body of the HVAC valve.... | 07/24/2007 |
| 7000641 | Inflatable stopping bags A method of controlling the fluid pressure of an inflatable stopping bag used to block the fluid flow through a fluid conduit comprises pressurising the bag using a pressure regulator which operates to regulate the pressure of the bag as a function of the instantane... | 02/21/2006 |
| 6923204 | Diaphragm-operated fluid flow control valve providing a plurality of flow levels A fluid flow control valve uses a servo valve to control the pressure in a main diaphragm chamber defined by a main diaphragm. The main diaphragm carries a main valve element that assumes either a low flow or a high flow position relative to a valve seat depending o... | 08/02/2005 |
| 6684651 | Channel selector valve and method of driving the same, compressor with the channel selector valve, and device for controlling refrigerating cycle Upon a selector operation of a valve such as a four-way selector valve provided in a refrigerating cycle for selecting a channel of fluid, prevention of environmental pollution and energy saving and the like are effectively achieved. A sliding valve is co... | 02/03/2004 |
| 5934093 | Servo device for regulating a refrigerant into a compressor A servo device for regulating a refrigerant into a compressor comprises a low pressure regulator, a high pressure regulator, and a solenoid valve. The low pressure regulator is connected to an inlet of the compressor and the high pressure regulator is con... | 08/10/1999 |
| 5156016 | Pressure controlled switching valve for refrigeration system A refrigerant flow switching device for alternatively conveying flow of refrigerant from either a high presure or a low pressure evaporator to a compressor of a refrigeration system and a refrigerator using such a refrigeration system. The device utilizes... | 10/20/1992 |
| 4957238 | Pneumatic variable air volume controller In a pneumatic variable air volume controller, a linear relationship is achieved between the actual air velocity in a duct carrying conditioned air to a defined area and a pneumatic pressure signal representing the temperature in that area; and this linea... | 09/18/1990 |
| 4934156 | Evaporator pressure regulating valve controlled by an auxiliary force for a refrigerator installation In a refrigeration system there is provided a main valve that has its inlet port fluidly connected to an evaporator while its outlet port is fluidly connected to the suction port of a motor-compressor. The closing of the main valve is controlled by an aux... | 06/19/1990 |
| 4778104 | Temperature responsive line valve Line valve apparatus for shower anti-scald and other uses comprising a housing (10) valving member (14) and a coil spring pilot valve (20) formed of a shape memory effect alloy and arranged for a first closed loop fluid blocking configuration to prevent, ... | 10/18/1988 |
| 4715808 | Thermostatic control system A system for controlling the amount of natural supply gas delivered from a natural gas supply source to a natural gas burner adapted to continually heat a process fluid in a vessel and for enabling the gas burned to continuously automatically maintain the... | 12/29/1987 |
| 4694989 | Control installation for variable volume air diffusers In a self-powered diffuser for a variable volume air distribution system, an installation for the control components which facilitate adjustment, modification and system start up. A Tee fitting located in the control compartment feeds through the bulkhead... | 09/22/1987 |
| 4648553 | Regulating valve A regulating valve having a fail-safe action which is suitable for controlling the flow of either a heating or cooling medium in response to a sensed condition is disclosed. The flow of heating or cooling medium is responsive to changes in temperature at ... | 03/10/1987 |
| 4634047 | Thermostatically adjustable pressure regulator A low pressure pneumatic pressure regulator having particular application to the control circuits of system powered air distribution systems. A diaphragm separates a control chamber located above the diaphragm from an underlying output. The chambers commu... | 01/06/1987 |
| 4630450 | Expendable refrigeration control An apparatus for controlling the opening and closing operation of a liquid flow valve dispensing fluid fed thereto from a reservoir, using the inherent gas pressure from the reservoir, comprising in combination (a) an actuator means operably connected to ... | 12/23/1986 |
| 4578960 | Automotive refrigeration A refrigeration system for use in an automotive air conditioning system has a vane type variable displacement refrigerant compressor drivingly connectable by an electromagnetic clutch to an automotive engine, a refrigerant evaporator through which air is ... | 04/01/1986 |
| 4545215 | Refrigeration apparatus A refrigeration apparatus comprising a compressor, a condenser, a pressure-reducing device and an evaporator connected sequentially in a loop. The loop includes a check valve placed between the outlet of said evaporator and the intake port of said compres... | 10/08/1985 |
| 4515308 | Flow stabilizer for a ventilation duct A stabilizer for a ventilation duct includes a sensor, sensitive to a variable parameter such as temperature, which affects the flow of air in the duct. The sensor includes an opening in a return flow conduit communicating with a deformable chamber contai... | 05/07/1985 |
| 4474550 | Thermostatic control system A system for controlling the amount of natural supply gas delivered from a natural gas supply source to a natural gas burner adapted to continually heat a process fluid in a vessel and for enabling the gas burner to continuously automatically maintain the... | 10/02/1984 |
| 4467956 | System for supplying conditioned air, thermostat therefor and methods of making the same A system for supplying conditioned air through a duct to an area to be treated by the conditioned air, the system having an area thermostat that tends to maintain the temperature of the area at a selected set point temperature of the thermostat. The therm... | 08/28/1984 |
| 4457694 | Automatic air-fuel ratio control apparatus An automatic air-fuel ratio control apparatus for use in a combustion system of a type in which combustion air is preheated, which is so arranged that a push rod depresses one end portion of a rocking lever in accordance with temperature of preheated comb... | 07/03/1984 |
| 4344297 | Refrigeration system A refrigeration system provided with a rotary compressor, a refrigeration pipe line system connected with the compressor and having a gas-liquid separator for separating an injection pressure gas refrigerant, and a gas injection channel extending from a g... | 08/17/1982 |
| 4331291 | Pneumatic control circuit for air distribution systems A pneumatic control circuit for controlling the discharge of conditioned air from an air distribution system. The circuit is arranged to apply the supply pressure to an inflatable bladder which controls the discharge of conditioned air from a ventilation ... | 05/25/1982 |
| 4324358 | Minimum airflow control In a central air conditioning system where airflow is regulated by bellows inflation which is controlled by a bleed-type thermostat, a second bleed which is controlled by a regulator is provided to insure a minimum flow for ventilation independent of cool... | 04/13/1982 |
| 4312474 | Positive shutoff In a central air conditioning system wherein air flow is regulated by bellows inflation which is controlled by a bleed-type thermostat, simultaneous heating and cooling in a zone is prevented by disabling the bleed-type thermostat when the heating system ... | 01/26/1982 |
| 4291832 | System powered reset velocity controller A variable air flow volume conditioned air distribution system of the kind having an air flow duct for supplying conditioned air to a room and a valve in the duct for regulating the volume of air flowing through the duct has a controller which senses the ... | 09/29/1981 |
| 4267702 | Refrigeration system with refrigerant flow controlling valve A refrigeration system is disclosed having a compressor, a condenser, an evaporator, a refrigerant expansion device, a control for cycling the compressor on and off according to a sensed condition, and a refrigerant flow controlling valve. The flow contro... | 05/19/1981 |
| 4231515 | Pressurized control signal apparatus Pressurized control signal apparatus is disclosed, which being supplied with air from a source of variable pressure, is operative to produce a control signal essentially independent of variations in the supply pressure. In one aspect of the invention, the... | 11/04/1980 |
| 4120453 | Air distribution unit An air distribution unit for discharging conditioned air into an area to be conditioned and having a plenum chamber for receiving conditioned air and an outlet in communication with the plenum chamber and with the area being conditioned. A damper is emplo... | 10/17/1978 |
| 4077567 | Pneumatic temperature reset differential pressure controller An air flow velocity controller in a variable air volume control system interlocks a room temperature signal from a thermostat with the velocity set point so that the velocity controller maintains a constantly regulated amount of air into a room in propor... | 03/07/1978 |
| 4073433 | Control apparatus for warm up cycle of air distribution system Apparatus to override the primary pneumatic circuitry of an air distribution system during warm up cycles. Means are provided for nullifying the pressure signal, indicative of ambient temperature, to which the flow controller responds. In the preferred em... | 02/14/1978 |
| 4060370 | Manifold gas valve with stepped flow operation A manifold gas valve for controlling gas flow to a burner has a diaphragm operated main valve, an electrically operated control valve, and means to delay the application of gas pressure to the main valve operating diaphragm to effect a delayed opening of ... | 11/29/1977 |
| 4047662 | Terminal unit for the outlet of conditioned air in a centralized conditioning system A variable flow, modular-type terminal unit for conditioning rooms in a centralized conditioning system is provided with means for controlling the conditioned air flow arranged within the outlet diffuser in order to vary the cross-section area of the outl... | 09/13/1977 |
| 4041725 | Control system for refrigeration unit A control system for a refrigeration unit incorporating a pressurized liquid gas reservoir is disclosed. The control system is self-contained and suitable for use in the transportation of food in containers. The improvement of the present system is that i... | 08/16/1977 |
| 4042173 | Method and apparatus for controlling volume air flow A butterfly damper, controlling volume air flow through a duct, is biased toward a closed position at least partially by aerodynamic pressure and is moved against its bias by a small pneumatic actuator in response to a sensed condition. The position of th... | 08/16/1977 |
| 4040564 | System powered damper and control unit A damper and control unit for controlling air flow through a conduit comprises a movable damper having a ball-joint connection with the end of an actuating rod. The actuating rod has first and second angularly related portions and the first portion serves... | 08/09/1977 |
| 4017025 | Variable volume control box and system incorporating same An inlet plenum extends into a control box and opens into the interior of the control box. Conditioned air is introduced into the box through the inlet plenum and flows from the box, to an area being serviced, through an outlet spaced from the plenum open... | 04/12/1977 |
| 4007873 | Pneumatic thermostat An improved pneumatic thermostat is provided which is capable of generating from a variable pressure air supply a pressurized air signal indicative of ambient temperature. The thermostat is used in conjunction with an air flow regulator in an air distribu... | 02/15/1977 |
| 4007780 | Heat exchange system and method and control device therefor A heat exchange system having a source of heat exchange output fluid for effecting a heat exchange function and having a source of return fluid resulting from the output fluid providing its heat exchange function. A thermally operated element controls the... | 02/15/1977 |
