Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| RE40511 | Rotary disc valve A multi-port rotary disc valve comprising a stator with a plurality of fluid flow ports and a rotary distributor with a plurality of channels arranged in a channel pattern. The channels are adapted to connect the ports between them and/or to the environment in a plu... | 09/23/2008 |
| 7377287 | Intermittent pressure module An intermittent pressure module for controlling the position of a valve between two positions comprising diaphragm means; a plurality of ports associated with said diaphragm means for exposing said diaphragm means to a selected pressure in said first position, and a... | 05/27/2008 |
| 7328854 | Fluid control valve and droplet ejection device Exemplary embodiments can provide a fluid control valve, which reduces or prevents any bubble from being built up in the valve itself so as to protect other hydraulic equipment placed in a downstream side from having any malfunction due to such a bubble, and a dropl... | 02/12/2008 |
| 7276107 | Indexing rotary dual valve for pressure swing adsorption systems The present invention relates to a PSA system using an indexing rotary dual valve regulating a stepping mode of operation that controls a variable bed inlet feed flow rate, controllable pressure between feed lines in different beds of the PSA system and varied outpu... | 10/02/2007 |
| 7270132 | Washer A washer includes a plurality of washing devices for spraying washing water to an object to be washed from various directions of a washing tub, and a washing water feeding device for feeding the washing water. The washing water is sequentially sprayed from respectiv... | 09/18/2007 |
| 7237571 | Pulsating vibration air generation apparatus A pulsating vibration air generation apparatus capable of sharply and quickly controlling air flow in turning on and off operation, thereby generating a pulsating vibration air with sharp and hardly attenuated peak and valley, and capable of operation without occurr... | 07/03/2007 |
| 7207352 | Bushing for thermally independent bypass air metering valve A bypass air metering valve is provided with a stationary case flange having a plurality of slots, a bushing positioned within each of the slots, and a metering ring positioned so as to ride on a surface of each respective bushing. Each bushing creates a gap between... | 04/24/2007 |
| 7179390 | Method of filtering a fluid and remote filtering station Filtering of an operating fluid of a mechanical device is performed utilizing a pumping device of the mechanical device which routinely circulated the operating fluid within the mechanical device. A remote filtering station of the present invention has a first condu... | 02/20/2007 |
| 7165577 | Cleaning valve drive unit A cleaning valve drive unit constituted to be able to supply water to a toilet by manual rotational operation of a main shaft in which the main shaft is constituted to be able to pull out from a cleaning operation position to a draining operation position. Whereas a... | 01/23/2007 |
| 7163026 | Valve unit and fluid control chip A valve unit and a fluid control chip include: a valve chamber having an inlet and an outlet for a fluid; a valve element accommodated in the valve chamber; a piezoelectric element for applying vibrations to the valve chamber; and a driver for driving the piezoelect... | 01/16/2007 |
| 7156322 | Irrigation sprinkler unit with cycling flow rate An irrigation sprinkler unit includes a tubular housing enclosing a speed reducing drive which is driven by a water actuated turbine wheel and rotates a rotary nozzle head at a substantially slower speed. The drive also rotates a tubular valve member within an annul... | 01/02/2007 |
| 7143773 | Intermittent pressure module for a vacuum regulator An intermittent pressure module for controlling the position of a valve between two positions comprising diaphragm means; a plurality of ports associated with said diaphragm means for exposing said diaphragm means to a selected pressure in said first position, and a... | 12/05/2006 |
| 7107970 | Fuel vapor purge control assembly and methods of assembling and controlling same A fuel vapor purge control assembly includes an intake passage, a vapor purge passage in fluid communication with the intake passage, a port between and in fluid communication with the intake passage and the vapor purge passage; a closing member movably mounted in t... | 09/19/2006 |
| 7040840 | Sewage effluent distribution means Effluent-operated valves provide, in a septic system, distribution of effluent uniformly to a plurality of portions or fingers of a drain field. The installation of such valves in a tank that collects septic system effluent to be distributed to a plurality of finger... | 05/09/2006 |
| 7036171 | Air mattress control unit The system of the present invention is a system for supplying air and controlling the flow of air into and out of the chambers of a patient supporting air mattress. It includes an electric motor powered variable speed blower, a two position rotary valve, air mattres... | 05/02/2006 |
| 7013917 | Rotary valve A high-speed, high pressure rotary valve is provided comprising a valve body, a valve element which includes a plurality of passageways therethrough that is configured to be rotatably disposed within the valve body, and means for rotating the valve element within th... | 03/21/2006 |
| 7004200 | Constant flow valve for a water softener control assembly A flow control valve controls a flow of water through a passage to a brine tank of a water treatment apparatus. A valve seat is between first and second sections of the passage. The valve seat has a first end with a concave surface facing the first section and an ap... | 02/28/2006 |
| 6975244 | Oscillating shear valve for mud pulse telemetry and associated methods of use An oscillating shear valve system for generating pressure fluctuations in a flowing drilling fluid comprising a stationary stator and an oscillating rotor, both with axial flow passages. The rotor oscillates in close proximity to the stator, at least partially block... | 12/13/2005 |
| 6962169 | Device for generating a pulsating stream of fluid In order to provide a device for producing a pulsating fluid stream, which is of simple construction and is easily producible and which enables a pulsating fluid stream to be produced at a comparatively high frequency, there is proposed a device for producing a puls... | 11/08/2005 |
| 6957451 | Flow control device for tub, spa, or shower A hydrotherapy spa includes an interior having an interior surface, a plurality of ports, and at least one flow control device. The interior surface is configured to receive a person. The plurality of ports include a first port configured to discharge fluid toward t... | 10/25/2005 |
| 6955145 | Methods and apparatus for receiving excessive inputs in a VCT system A method that provides increased flexibility to measure dynamic range of a rotating system is provided. The method includes the steps of: providing a first rotating member; providing a second rotating member suitably engaged to the first rotating member; providing a... | 10/18/2005 |
| 6955722 | Method and apparatus for application of a material to a substrate An apparatus for applying a material to a substrate includes a housing having an inlet passage, a plurality of exit openings, and a recess in fluid communication between the inlet passage and the exit openings. A valve element is disposed in the recess wherein the v... | 10/18/2005 |
| 6883543 | Pulse detonation engine having an aerodynamic valve A pulse detonation engine (10) is provided with an aerovalve (14) for controlling the pressure of injected propellants (Ox, Fuel) in an open-ended detonation chamber (26). The propellants are injected at such pressure and velocity, and in a dire... | 04/26/2005 |
| 6868859 | Rotary gas valve for pulsing a gas A gas valve for pulsing a gas comprises a housing having at least one inlet port, an outlet port, and a selector disk mounted in the housing and comprising at least one timing slot, wherein rotation of the selector disk periodically couples at least one inlet port t... | 03/22/2005 |
| 6827104 | Seal and valve systems and methods for use in expanders and compressors of energy conversion systems An epicycling device with improved sealing. A housing is provided with adjacent walls spaced apart to allow a substantially planar partition to pass. A piston is linked eccentrically to a drive shaft and positioned within the housing, has a cross sectional shape for... | 12/07/2004 |
| 6820635 | Flushing attachment for hydrant A device and method for automatically flushing hydrants. The device is installed externally to an existing hydrant. The device comprises a nipple having an internally threaded collar for attaching the device to a hydrant outlet, a valve, a control for automatically ... | 11/23/2004 |
| 6782919 | Revolving valve for an oxygen machine A revolving valve for an oxygen machine includes a motor, a cage, a motor secured in the cage, a valve linking to the motor and an air box secured on top of the cage. The valve has a semicircular recess. The air box comprises an air inlet on the top. The air box fur... | 08/31/2004 |
| 6779557 | Rotary disc valve A multi-port rotary disc valve comprising a stator with a plurality of fluid flow ports and a rotary distributor with a plurality of channels arranged in a channel pattern. The channels are adapted to connect the ports between them and/or to the environment in a plu... | 08/24/2004 |
| 6776188 | Injector An injector injects fluids, such as hydrate inhibitors into a pipeline such as a natural gas pipeline. The injector is comprised of two motor valves with different force constants such that they open and close in a sequence that injects fluid into the pipeline. The ... | 08/17/2004 |
| 6675826 | Automatic flood prevention system A flood prevention system includes a double-latching solenoid valve that shuts off a water supply line in response to a moisture sensor detecting a leak in a plumbing system. The double-latching feature provides the solenoid's plunger with two positions o... | 01/13/2004 |
| 6672335 | Automated dump sand separator control system An automated dump sand separator control system for controlling a three-way pneumatic dump valve of a well sand separator. The system controls a three-way pneumatic dump valve which is attached to a sand separator for dumping material from a well pumping ... | 01/06/2004 |
| 6607008 | Pulsating vibration air generation means Pulsating vibration air generation apparatus comprising a cylindrical casing having an air supply port connected with an air source and a wave transmission port provided at the circumferential surface thereof, and a drum type rotary valve constructed rota... | 08/19/2003 |
| 6571825 | Rotary valve A rotary valve for use in controlling an air supply to an inflatable patient support system, especially an alternating pressure mattress. The rotary valve comprises a body member having a planar surface and at least two apertures for communication with ce... | 06/03/2003 |
| 6444127 | Water conditioning unit control valve A highly versatile drive arrangement that drives a linearly reciprocating piston of a water conditioning unit control valve without imparting any significant side loads on the support structure for the piston's drive rod or the associated seals. The drive... | 09/03/2002 |
| 6431294 | Percussive tool A percussion drill 10 has a tubular fluid transmitting body 14, with a drill bit 16 mounted on a drill bit support 20 itself mounted in body 14 via a spring 22 and salines 24. A mass 28 is spring mounted in the body 14 and is movable to impact on a face 2... | 08/13/2002 |
| 6390116 | Large amplitude pneumatic oscillator A system for producing variable amplitude pneumatic pulses, such as may be used to prevent flow separation on airfoil and diffuser surfaces to control stalling, utilizes a source of pressurized air which is regulated and fed to parallel outlet lines. Each... | 05/21/2002 |
| 6345645 | Fluid distribution valve A water distribution valve, ideally suited for distributing water from a recirculating pump of a swimming pool to selective outlet lines, is designed with a main housing in the form of an outer cylindrical section. This main housing has outlet ports locat... | 02/12/2002 |
| 6254082 | Rotary valve A rotary valve is interposed between an intake pump and an exhaust pump for supplying an air, and at least one suction head or one nozzle that performs a predetermined operation upon reception of the air supplied from the intake and exhaust pumps, to supp... | 07/03/2001 |
| 6244228 | Rotary-to-linear motion converter and use thereof A rotary-to-linear converter for use with a valve actuation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocat... | 06/12/2001 |
| 6206042 | Modular control apparatus for water treatment system A modular modular control apparatus for a water treatment system which periodically undergoes a regeneration cycle including a backwash phase and a replenishment phase. The modular control apparatus has a modular design which includes interchangeable time... | 03/27/2001 |
