Bizarre Patents
Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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 |
| 7402780 | Thermostat for a heat pump or conventional heating system A thermostat is provided comprising a first connector for connecting to an air conditioner, a second connector for connecting to either a conventional heater or a heat pump reversing valve, and a selection means for selecting from at least a first mode of operation ... | 07/22/2008 |
| 7380588 | Heat pump control system and method of operating to provide automatic backup heating modes A heat pump type heating and air conditioning system includes a gas furnace or other auxiliary heat source and a thermostat and controller associated with the heat pump and the auxiliary heat source for automatically energizing the heat pump if the auxiliary heat so... | 06/03/2008 |
| 7261243 | Thermostat responsive to inputs from external devices A thermostat is provided that receives one or more inputs from at least one heating system of a climate control system, and initiates an appropriate action in response to the input. The thermostat can turn off a heat pump providing substandard heat and responsively ... | 08/28/2007 |
| 7207379 | Automotive air conditioning system An automotive air conditioning system comprising a main heating unit 4 for heating air passing through an air conditioning duct 2 with cooling water of an engine E and a refrigeration cycle device 20 having a first refrigerant circulating circui... | 04/24/2007 |
| 7155922 | Energy efficient heat pump systems for water heating and air conditioning A heat pump system for providing water heating and air conditioning, comprising one or more compressors for circulating a refrigerant in the system, a hot water tank having a heat exchanger for heating and storing the hot water, an outdoor heat exchanger and a fan f... | 01/02/2007 |
| 7140427 | Vehicle air conditioner with defrosting operation in exterior heat exchanger In a vehicle air conditioner for heating a passenger compartment by a heater core and a heat pump cycle, when operation of a heat pump cycle is switched from a defrosting operation to a heating assist operation, a heating degree of the heater core is increased highe... | 11/28/2006 |
| 7085626 | Method and apparatus to prevent low temperature damage using an HVAC control A heating control method is provided for a multi-stage heating system including a heating circuit having a compressor, a condenser and an evaporator. An auxiliary heater is provided that is selectively controlled independently of the heating circuit. During a heatin... | 08/01/2006 |
| 7082352 | Temperature control apparatus for a heater using an encoder switch and method thereof Disclosed is a temperature control apparatus for a heater using an encoder switch and method thereof that controls an indoor temperature by driving a burner in accordance with a change of an indoor temperature and ventilating heated air indoors. The temperature cont... | 07/25/2006 |
| 6957696 | Combination radiant and forced air climate control system A method and controller for controlling the operation of a zoned climate control system including a primary heat source, a secondary heat source, a cooling unit, and a humidifier unit. The controller is configured to receive both heating demand signals and cooling d... | 10/25/2005 |
| 6729390 | Control for heat pump with auxiliary heat source A method of controlling a heating system including at least a first stage heat pump and a second stage auxiliary heater, and a control that implements the method. The control shuts off the first stage heat pump during cold outside temperatures without the need to di... | 05/04/2004 |
| 6604576 | Automotive air conditioning system An air conditioning system for a vehicle has a first cycle including a compressor, a first condenser, a second condenser, a liquid tank, an expansion valve and an evaporator which are connected through pipes to form a first refrigerant circulation circuit... | 08/12/2003 |
| 6598671 | Hybrid heating system and method for vehicles An apparatus for heating the interior compartment of a vehicle, the apparatus has a primary heating system, a secondary heating system and an operating system. The primary heating system receives and circulates an engine coolant through a heater core. The... | 07/29/2003 |
| 6543531 | Device and method for heating and cooling a compartment of a motor vehicle A device and a method are provided for heating and cooling a compartment of a motor vehicle powered by an internal combustion engine. The device has a coolant circuit with a compressor, an ambient heat exchanger, at least one expansion device, an interior... | 04/08/2003 |
| 6422308 | Heat pump type air conditioner for vehicle A heat pump type air conditioner for a vehicle has a refrigeration cycle constituted by a compressor, an external heat exchanger, a refrigerant valve unit and an internal heat exchanger unit. The refrigerant valve unit includes first and second flow contr... | 07/23/2002 |
| 6237681 | Vehicle refrigerating cycle apparatus and method for inhibiting cycle corrosion and for facilitating rapid passenger compartment warm-up during low temperature conditions A refrigerating cycle apparatus that inhibits system corrosion and abnormally high pressure during startup of a first refrigerant circuit by preventing air from penetrating into a refrigerant compressor during low-temperature startup of a second auxiliary... | 05/29/2001 |
| 6176306 | Method and device for controlling operation of heat pump A method and device for controlling the operation of a heat pump having a primary heat system and an auxiliary heat system, and used to heat air circulating in an enclosure such as a building, the invention comprising a first sensor positioned in the retu... | 01/23/2001 |
| 6073690 | Heating system control unit A heating system control unit is provided for use with a heating system. The control unit includes a switching element connected to a first temperature switch associated with a first stage heater, a second temperature switch and a second stage heater of t... | 06/13/2000 |
| 5501267 | Air conditioning apparatus for an electric vehicle using least power consumption between compressor and electric heater An air conditioning apparatus for heating a cabin of an electric car having reduced electric power consumption is disclosed. An initial setting of the heating operation is that of using a refrigerating cycle 17. An average value of actual electric power c... | 03/26/1996 |
| 5405079 | Method of providing auxiliary heat during primary heat pump lock-out In a heating system with a plurality of heat sources, wherein at least a first heat source is normally activated at a first, higher ambient temperature and at least one additional heat source is normally activated at a second, lower ambient temperature, a... | 04/11/1995 |
| 5259445 | Control for dual heating system including a heat pump and furnace A programmable thermostat is provided for the selective operation either of a fossil fuel furnace or a heat pump. The thermostat is programmed to operate the fossil fuel furnace when the outside temperature is below a preselected temperature range, and to... | 11/09/1993 |
| 4856578 | Multi-function self-contained heat pump system A heat pump unit capable of producing hot potable water irregardless of the heating or cooling operation of the heat pump. The heat pump for heating or cooling a conditioned space with potable water heating capability. The heat pump unit having a compress... | 08/15/1989 |
| 4543468 | Control system for water heater with external heat source A control system for an electric domestic water heater operatively associated with an external heat source, such as a heat pump, and including a water storage tank having an internal electric heater unit controlled by a tank thermostat responsive to the w... | 09/24/1985 |
| 4540874 | Control system for electric water heater with heat pump external heat source A control system for an electric water heater operatively associated with an external heat source, such as a heat pump. The water heater includes a water storage tank provided with an electric tank heating unit having a tank thermostat which closes in res... | 09/10/1985 |
| 4517807 | Heat pump water heater with supplemental heat supply There is disclosed a heat pump water heater with supplemental heat supply wherein the heat pump is turned on when water has cooled below a predetermined temperature, and is turned off when the water has been heated to a predetermined temperature. In the e... | 05/21/1985 |
| 4483388 | Apparatus and method for providing failsafe supplemental heat _regulation in an air conditioning control Apparatus and a method for providing failsafe supplemental heat operation of an air conditioning control are disclosed. Operating power to a microprocessor control is discontinued when the air conditioning unit is placed in a supplemental heat mode by the... | 11/20/1984 |
| 4147203 | Method and apparatus for controlling the heating and cooling function of a heat pump system This invention discloses a method and apparatus for coupling and controlling the operable components of a heat pump system to effectively regulate the temperature within a controlled environment. The operable components of the heat pump system include an ... | 04/03/1979 |
| 4102390 | Control system for heat pump and furnace combination A residential-type, heat pump-furnace system with control means for sequencing the activation of the heat pump and furnace operation depending on the heating load. The heat pump remains operational until the air off the furnace has reached some predetermi... | 07/25/1978 |
| 3996998 | Combination furnace--heat pump unit A heating system for conditioning the air in an enclosure. The heating system includes a furnace, heat pump and control mechanism for coordinating operation thereof.... | 12/14/1976 |
| 3989183 | Method and apparatus employing a heat pump for heating fluids in different flow circuits There is provided a method and apparatus for heating tap water and radiator water by means of a heat pump, and complementarily also by means of a conventional fuel fired furnace. The condensor unit of the heat pump is divided into two heat exchangers. The... | 11/02/1976 |
