Bizarre Patents
A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6851620 | Floating actuator control system and method A system and method of providing floating actuator control is provided. This system and method receives input command signals from an actuator controller, and effectively integrates these signals until the controller has requested a large enough movement of the actu... | 02/08/2005 |
| 6554198 | Slope predictive control and digital PID control The present invention provides an airflow control loop that uses averaged airflow measurements without the problems that are normally encountered with averaging measurements, such as the delay introduced into the airflow control loop. This is accomplished... | 04/29/2003 |
| 6360958 | Vehicle air conditioning apparatus with hot water flow control In an air conditioning apparatus for a vehicle, an amount of hot water flowing from an engine into a heater core is adjusted by a flow control valve so that temperature of air blown from the heater core is adjusted. A water pump driven by the engine is di... | 03/26/2002 |
| 6189323 | Air conditioner with improved valve controller and valve control method therefor In an air conditioner having a plurality of valves for adjusting the flow of refrigerant circulating in an outdoor unit and an indoor unit, and a controller for controlling the opening degree of each of the valves while successively switching the control ... | 02/20/2001 |
| 5810245 | Method and apparatus for controlling air flow in a structure Flow control valves (19) are provided and interfaced with the HVAC ducts (14) at the efferent ends (16) in adjoining rooms of a structure. A flow control command device (29), mounted on the wall of the structure (25), is provided to control the flow of ai... | 09/22/1998 |
| 5342027 | Damper position control device for automotive air conditioning system A damper position control device for use in an automotive air conditioning system. The damper position control device includes a motor actuator which rotates an air mix damper in forward and reverse directions, an electric power source, and an electric po... | 08/30/1994 |
| 5316263 | System for controlling electronic expansion valve provided in refrigerating machine It is possible to accurately and easily detect an abnormality in an electronic expansion valve without cutting or separating an electronic expansion valve from a cooling medium circuit. When an excitation pulse current from a drive circuit is output, a ma... | 05/31/1994 |
| 5226595 | Vehicle passenger compartment temperature control system with multi-speed response A system for controlling vehicle passenger compartment comfort. An electronic controller receives input from: (i) a thermistor array sensing blower plenum discharge temperature, (ii) a user movable Level Select Control (iii) a potentiometer sensing the po... | 07/13/1993 |
| 5213259 | Paint booth humidity and temperature control system Humidity control system for regulating the relative humidity of air which is forced through a spray painting booth. The humidity control system employs a water spray nozzle which atomizes water to quickly change the relative humidity and temperature of th... | 05/25/1993 |
| 5172566 | Temperature regulating apparatus for refrigerators A temperature regulating apparatus for an air-circulated refrigerator is disclosed, capable of keeping the refrigeration room temperature constant by way of closely regulating the flow rate of cold air admitted into the refrigeration room. Also disclosed ... | 12/22/1992 |
| 5163301 | Low capacity control for refrigerated container unit A refrigeration system control for a refrigerated container unit in which a compressor suction modulating valve is controlled during light loads near its valve seat by rapidly moving the suction modulating valve to an open position away from the valve sea... | 11/17/1992 |
| 5145456 | Automotive air-conditioner An automotive air-conditioner has a casing forming an air passage through which an air passes and a film damper slidably disposed in the casing in such a manner to face to the air passage. The film damper having openings opens and closes the air passage. ... | 09/08/1992 |
| 5127576 | Vehicle passenger compartment temperature control system with P.I.D. control of heater servo-valve A system for controlling vehicle passenger compartment comfort. An electronic controller receives input from: (i) a thermistor array sensing blower plenum discharge temperature, (ii) a user movable Level Select Control (iii) a potentiometer sensing the po... | 07/07/1992 |
| 5039010 | Relay-controlled anticipation in a two switch thermostat A conventional thermostat has separate high and low temperature switches for controlling a reversible motor driving a modulating damper or valve whose position controls the temperature of an enclosure by controlling the injection and removal of heat from ... | 08/13/1991 |
| 4899809 | Automotive air conditioner system with automatic adjustment of discharge air temperature A system for controlling temperature of air to be discharged into a cabin of a vehicle in an automatically controlled air conditioner system of an automotive vehicle. The air conditioner system is provided with a cooling unit and a heating unit for coolin... | 02/13/1990 |
| 4875341 | Control apparatus for refrigerated cargo container A method of closely controlling the supply air temperature delivered from an air conditioning unit into a mobile cargo container wherein the supply air temperature is compared to a desired set point temperature and a suction control valve in the air condi... | 10/24/1989 |
| 4739923 | Hot/cold water mixing device A hot/cold water mixing device includes a hot water supply valve disposed in a hot water feed pipe for regulating the amount of hot water passing therethrough, a cold water supply valve disposed in a cold water feed pipe for regulating the amount of cold ... | 04/26/1988 |
| 4682728 | Method and apparatus for controlling the temperature and flow rate of a fluid A method and apparatus for controlling the mixing of two fluids to form a mixed fluid, and the volume discharge rate of the mixed fluid. In a particular application, the two fluids are hot and cold water, and the mixing is controlled to effect temperature... | 07/28/1987 |
| 4456166 | Temperature control system for air conditioners Disclosed is a temperature control system for airconditioners having air blend doors which are controlled by electrical signals related to the room temperature such that the amount of cool air to be reheated by a heater and the amount of cool air bypassin... | 06/26/1984 |
| 4431131 | Heating arrangements and control systems therefor A control system for heating installations which is responsive to a pre-selected target air temperature and a pre-selected radiant heat output.... | 02/14/1984 |
| 4422571 | Proportional motor drive control An air conditioning control system has inputs for room temperature and air velocity voltage signals. Both signals are scaled and compared to determine which signal is larger, and the magnitude of the difference. The control circuit drives a variable speed... | 12/27/1983 |
| 4421269 | System for control of water temperature A system for automatic control of water temperature by means of a plurality of pushbuttons or their equivalent bearing indicia identifying a range of available temperatures which, when actuated through appropriate circuitry, control the water valve settin... | 12/20/1983 |
| 4393921 | Circuit controlling coolant flow to a non-linear heat exchanger through a non-linear electromechanical valve An electronic circuit controls a non-linear electromechanical valve in order that the temperature of approximately 25 gallons of coolant water within a reservoir may be maintained within +2.8° C. to -0.0° C. of a set point temperature from 35° F. to ... | 07/19/1983 |
| 4192455 | Apparatus for controlling the supply temperature in a central heating installation The invention relates to thermostatic apparatus for controlling the heating fluid supply temperature in a central heating installation having at least two radiators in different rooms. With each room having a thermostat for controlling the radiators there... | 03/11/1980 |
| 4139153 | Electronic reversible motor operated valve assembly An electronic reversible motor operated valve assembly adapted to be controlled by a two-wire thermostat. The assembly includes a valve casing having a pivotally mounted valve member, and a reversible motor drive unit having forward and reverse motor wind... | 02/13/1979 |
| 4095741 | Proportional electrical control system A control system for proportionally operating an actuator is disclosed having a condition responsive device comprising an element movable in response to a sensed condition and a sensing device for sensing the movement of the element, the actuating means b... | 06/20/1978 |
| 4078721 | Greenhouse control device Apparatus for controlling the opening and closing of windows in a greenhouse or other structure which includes temperature sensing means for producing a control signal, means for producing a second control signal corresponding to a temperature at which th... | 03/14/1978 |
| 4072268 | Heating control system A heating control system for automatically controlling the temperature within a space is provided. The heating control system includes a temperature sensor for detecting changes in temperature without the space and in response thereto producing a control ... | 02/07/1978 |
| 4017024 | Stack damper control arrangement A stack damper control arrangement for use in a heating system including a furnace having a fuel-fired burner apparatus and a vent stack for conducting combustion products away from the burner apparatus and a damper plate pivotally mounted within the stac... | 04/12/1977 |
