Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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 |
| 7337041 | Feedback control methods and apparatus for electro-pneumatic control systems Methods and apparatus related to feedback control for electro-pneumatic control systems are disclosed. An example electro-pneumatic control system comprises an electro-pneumatic controller and a secondary pneumatic power stage coupled to the electro-pneumatic contro... | 02/26/2008 |
| 7324874 | Air conditioner for providing well-being index Air conditioner including a temperature sensor for sensing a room temperature, a humidity sensor for sensing room humidity, a control unit for controlling to calculate well-being indices according to the room temperature or the room humidity sensed at the temperatur... | 01/29/2008 |
| 7302959 | Low-power wireless inflatable bladder damper for forced air heating, ventilation, and air conditioning systems A low-power, wireless, inflatable bladder damper device for controlling the flow of air through an airflow channel, and a method of operation for the same. Rather than requiring power supply and/or control wiring for operation of a wireless damper device, a low-powe... | 12/04/2007 |
| 7249931 | High efficiency air conditioner condenser fan with performance enhancements Twisted blades for outdoor air conditioner condensers and heat pumps that improve airflow efficiency to minimize operating power requirements. The blades can run at approximately 850 rpm to produce approximately 1930 cfm of air flow using approximately 110 Watts of ... | 07/31/2007 |
| 7232369 | System and method for providing heating, ventilation and air conditioning An under-floor, perimeter-based heating ventilation and air conditioning pressurized air delivery system for use in a space includes a ventilation module, to be located in the floor, a multi-deflection linear bar grille covering the ventilation module, for diffusing... | 06/19/2007 |
| 7207496 | Vent-blocking inflatable bladder for a retrofit HVAC zone control system An improved inflatable bladder for use as a zone climate control system valve to controllably permit and prevent airflow through a vent of a forced air HVAC system. The bladder is secured by a rigid strap which may be coupled to the vent near the vent opening. The b... | 04/24/2007 |
| 7172156 | Increasing the performance of aircraft on-board inert gas generating systems by turbocharging A modular, on-board, inert gas generating system for aircraft is disclosed in which main components such as a heat exchanger, filter, air separation module, and turbocharger are provided in a modular unit sized to provide a variable flow of nitrogen-enriched air to ... | 02/06/2007 |
| 7059536 | Air circulation system An air circulation system for use with or without ductwork having an outside air stream and a return air stream includes a controller and a return damper apparatus operatively connecting the return air stream to the controlled environment. The air circulation system... | 06/13/2006 |
| 7048231 | Increasing the performance of aircraft on-board inert gas generating systems by turbocharging A modular, on-board, inert gas generating system for aircraft is disclosed in which main components such as a heat exchanger, filter, air separation module, and turbocharger are provided in a modular unit sized to provide a variable flow of nitrogen-enriched air to ... | 05/23/2006 |
| 6997390 | Retrofit HVAC zone climate control system A low cost and easy to install zone climate control system for retrofit to an existing forced air HVAC system, that provides independent minute-by-minute, day-by-day, and room-by-room climate control, including easy to use methods for specifying temperature schedule... | 02/14/2006 |
| 6983889 | Forced-air zone climate control system for existing residential houses A low cost and easy to install zone climate control system for retrofit to an existing forced air HVAC system, that provides independent minute-by-minute, day-by-day, and room-by-room climate control, including easy to use methods for specify temperature schedules a... | 01/10/2006 |
| 6979965 | Spring return actuator for a damper An actuator including an electric motor driven by a drive circuit powered by a power source, and a load coupled to the electric motor. The actuator further includes a spring biasing the load to a first position, and a microcontroller coupled to the electric motor to... | 12/27/2005 |
| 6223993 | Climate control device A climate control system is provided including a vacuum pump for generating a vacuum upon actuation. Also included is a thermostat for generating the activation signal upon a current temperature within the associated room being out of a predetermined rang... | 05/01/2001 |
| 5310111 | Pneumatic controller A pneumatic controller configured to regulate the opening and closing of a controlled device in response to a measured variable, such as temperature. The pneumatic controller includes a sensor providing an output proportional to the measured variable as w... | 05/10/1994 |
| 5277397 | Bladder assembly for control of fluid flow and method of its fabrication A bladder type damper assembly formed of a flexible envelope of fluid impermeable plastic material incorporating an insert made of two segments of rigid sheet material joined in hinged relation at one edge and moveable between a flat association and a pre... | 01/11/1994 |
| 5179524 | Fan-powered mixing box assembly A fan-powered mixing box assembly through which conditioned air is supplied to a plurality of zones is controlled by a programmable fan-box monitor. The assembly comprises a mixing box, a multi-speed fan and a heating element having several stages. The mo... | 01/12/1993 |
| 5158230 | Air flow control apparatus A flow control apparatus for controlling the flow of a low pressure air stream in an air duct of an air ventilation system includes a conduit section having spaced upstream and downstream ports in upstream and downstream portions thereof, a redirecting me... | 10/27/1992 |
| 5117899 | Air handling apparatus The air handling apparatus provides a separate heating mixing air deck and a separate cooling mixing air deck each with their own return air and outdoor air supplies to maximize indoor air directed to the heating deck and monitor the cooling deck to utili... | 06/02/1992 |
| 5016856 | Inflatable bladder for control of fluid flow An angularly shaped inflatable bladder assembly adaptable to use as a damper or shut-off means for control of fluid flow in fluid flow systems and more specifically for control of air flow in air conditioning systems. The angularly shaped bladder is forme... | 05/21/1991 |
| 5011076 | Pneumatic temperature control A pneumatic temperature control unit having a fluid receptacle containing a fluid capable of expanding or contracting with temperature. The fluid receptacle having a surface capable of movement in response to expansion or contraction of the fluid in the r... | 04/30/1991 |
| 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 |
| 4909308 | Changeover valve for a central air conditioning unit A valve is provided with one inlet and two outlets with one of the outlets being normally closed by a valve in the form of a film disc carried by a flexible blade. A magnetic pad secured to the blade is attracted by the proximity of an actuator carrier ma... | 03/20/1990 |
| 4848654 | Zone control and smoke damping apparatus for central heating and/or cooling systems An improved zone control apparatus having mode selectors which allow a user to select any one of a variety of operating modes for individual fluidically actuated flow control devices. The invention further provides for a smoke damper which upon automatic ... | 07/18/1989 |
| 4846399 | Fan device A readily portable fan device which is usable both as a cooling fan for circulating ambient air and as a device for increasing the flow of air through a register, comprises a housing containing both a fan impeller and an electric motor for driving the imp... | 07/11/1989 |
| 4832260 | Emergency ventilation system An apparatus and method for controlling emergency ventilation of a liverstock building comprising an environment sensor (12), air operated trip mechanism (14), and a source(10) of compressed air. The trip mechanism (14) is connected to open or close doors... | 05/23/1989 |
| 4817863 | Vortex valve flow controller in VAV systems In variable air volume systems of buildings, a vortex valve is used for varying the volume of the air moving through the system.... | 04/04/1989 |
| 4817864 | Temperature compensation for vav system A temperature compensation control system for stabilizing the temperature within a space as the amount of air being supplied to the space undergoes sudden changes, the space being supplied with supply air through a supply duct, the supply duct having a te... | 04/04/1989 |
| 4811897 | Duct type air conditioning system An air conditioning system provided with a variable capability blower and heat source unit is configured such that individual room dampers 9 and controllers 14 can be subsequently added to a central control device as options to convert from an all room si... | 03/14/1989 |
| 4796803 | Air volume regulator valve Disclosed is an air volume regulator valve for an air distribution apparatus for heating, ventilating and air conditioning systems having a first open position, a closed position and a second open position and means for maintaining relatively constant vol... | 01/10/1989 |
| 4795090 | Air-conditioning installation for vehicles In an air-conditioning installation for vehicles with a blower for supplying fresh air to a vehicle interior space, with a temperature sensor for detecting the interior space temperature and with an air jet pump, consisting of a venturi pipe and of an air... | 01/03/1989 |
| 4783045 | Inflatable bladder for control of fluid flow A portable self-deflating fluid inflatable bladder adaptable to use as a damper for control of fluid flow in fluid supply systems and more specifically for control of air flow in heating and air conditioning ducts such as may be effectively used in zone c... | 11/08/1988 |
| 4756474 | Duct pressure powered air volume controller A duct pressure powered air volume controller controls the flow through a terminal responsive to the differential pressure across a nozzle plate, the selected ventilation requirements, and the temperature of the supplied air, the zone and the setpoint.... | 07/12/1988 |
| 4694988 | 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 |
| 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 |
| 4648552 | 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... | 03/10/1987 |
| 4643353 | Air conditioning control system with enhanced operating range A control for an air conditioning system comprises a flow sensor and a condition sensor in the form of a thermostat controlling a pivotal lever which in turn sets a pressure at a control orifice for an actuator which operates the control damper in an air ... | 02/17/1987 |
| 4637546 | Pneumatic differential pressure controller A differential pressure controller includes means for controllably metering a flow of air therethrough to an external control device, the metering means including a valving member and a nozzle coacting with the member for metering the flow of air. Also in... | 01/20/1987 |
| 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 |
| 4627569 | Four function pneumatic controller A pneumatic controller for use in controlling airflow in a conditioned air distribution system is adjustable to accommodate different types of damper actuation and thermostats in different systems. The four-function controller can be manually reconfigured... | 12/09/1986 |
| 4600144 | Zone control apparatus for central heating and/or cooling systems A zone control apparatus for central heating and/or cooling systems having a central fluid heating and/or cooling plant and conduits for directing the heated or cooled fluid to the rooms in a house or other building being serviced by the system. The zone ... | 07/15/1986 |
