William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 6647952 | Control apparatus for cylinder injection type internal combustion engine A control apparatus for a cylinder injection type internal combustion engine in which the fuel injection mode of the engine is switched between a compression stroke injection and an intake stroke injection. When the engine is cold, the compression stroke ... | 11/18/2003 |
| 6647953 | Hydraulic system volume reducer A volume reducer for a hydraulic system, particularly useful for low pressure hydraulic systems such as used in engine compression braking systems. The hydraulic system has an actuator and a pressurizer, with a hydraulic line interconnecting the actuator ... | 11/18/2003 |
| 6647954 | Method and system of improving engine braking by variable valve actuation The present invention relates to methods of improving engine braking of a reciprocating piston internal combustion engine by variable valve actuation. One embodiment of the present invention enables independent two-valve actuation for each cylinder, and e... | 11/18/2003 |
| 6647955 | Method of gradual stopping control of an internal combustion engine A desired gradual stopping position of a piston in at least one cylinder of an internal combustion engine can be attained very accurately and simply by closing the gas exhaust valves of one or more cylinders of an internal combustion engine for one or mor... | 11/18/2003 |
| 6647956 | Sound attenuating system for a marine engine A sound attenuator is provided for an idle air control valve system in order to reduce noise emanating from the idle air control valve. The sound attenuator comprises a fibrous pad that is inserted into an air conduit of the idle air control system. In a ... | 11/18/2003 |
| 6647957 | Fuel control valve for preventing sudden start of automobile Described herein is a fuel feeding apparatus for an automobile including a fuel tank, an engine supplied with a fuel from the fuel tank by a fuel pump through a fuel feeding pipe, and a fuel return pipe for returning overflow fuel to the fuel tank. The ap... | 11/18/2003 |
| 6647958 | Throttle control apparatus for internal combustion engine A throttle control apparatus for an internal combustion engine capable of controlling an opening degree of an electronic control type throttle with high accuracy by employing an inexpensive A/D converter. The apparatus includes a throttle opening degree d... | 11/18/2003 |
| 6647959 | Fail-safe device for electronic throttle control system A fail-safe device includes an intake air amount sensor, a throttle position sensor for detecting a throttle opening degree of an electronic throttle controller, an accelerator position sensor for detecting an accelerator opening degree as an amount of pr... | 11/18/2003 |
| 6647960 | Torsion spring assembly for electronic throttle An electronic throttle body uses a spring and an insert to generate a force tending to oppose the motion of opening a throttle. The insert locates and centers the coils of the spring and also acts during assembly to place the proper amount of torsion on t... | 11/18/2003 |
| 6647961 | Internal combustion engine and control method of the same The internal combustion engine includes an engine preheating apparatus for preheating the internal combustion engine upon or before starting thereof. This internal combustion engine further includes an air-fuel ratio controller for setting an air-fuel rat... | 11/18/2003 |
| 6647962 | Outboard motor with internal combustion engine An outboard motor includes an internal combustion engine provided with a pair of intake valves. The opening and closing operation of one of the intake valves can be paused. The internal combustion engine comprises a vertical crankshaft, a cylinder head pr... | 11/18/2003 |
| 6647963 | Electromagnetic valve for high pressure fuel supply apparatus The electromagnetic valve for use in a high pressure fuel supply apparatus includes an electromagnetic valve main body including a fuel passage to be connected between the high and low pressure sides of the fuel supply apparatus, a valve seat disposed in ... | 11/18/2003 |
| 6647964 | End of injection pressure reduction End of injection rate shaping can be attained by controlling the flow rate into a check control cavity. Specifically, a flow control valve allows the check control cavity to vent at a first flow rate and to pressurize at a second slower flow rate. By pres... | 11/18/2003 |
| 6647965 | Pump assembly and method A pump assembly and method for an internal combustion engine includes a high-pressure pump for pressurizing oil used to actuate fuel injectors or other devices, a hydraulic inlet throttle valve, a three-way valve for alternatively connecting the inlet thr... | 11/18/2003 |
| 6647966 | Common rail fuel injection system and fuel injector for same A fuel injection system is provided which includes a source of high pressure fuel, a low pressure fuel reservoir, and at least one fuel injector which has an injector body that defines a nozzle chamber, a needle control chamber, a needle control vent, a f... | 11/18/2003 |
| 6647967 | Fuel injection control device for internal combustion engine A fuel injection control device for an internal combustion engine is provided, which comprises: a rpm sensor for detecting an engine speed; an intake pressure sensor for detecting an intake pressure; a throttle sensor for detecting the throttle opening de... | 11/18/2003 |
| 6647968 | Back pressure valve for fuel injection system A method and apparatus to increase the fuel economy of a diesel engine having an injection system fuel rail by increasing the flow rate of fuel being returned to the tank hence decreasing the temperature of the fuel returned to the tank from the fuel rail... | 11/18/2003 |
| 6647969 | Vapor-separating fuel system utilizing evaporation chamber An evaporation chamber controlled by a pressure drop across an intake valve is used in conjunction with a regulator to supply fuel such as propane in its gaseous state regardless of the chamber's orientation to a portioning fuel injection system for porta... | 11/18/2003 |
| 6647970 | Exhaust gas recirculation and processing device for turbocharged diesel engine An exhaust gas recirculation and processing device for a turbocharged diesel engine. A reactor comprises an inner chamber substantially surrounded by an outer chamber. Within the inner chamber, compressed air from the turbocharger mixes with engine exhaus... | 11/18/2003 |
| 6647971 | Integrated EGR valve and cooler An exhaust gas recirculation (EGR) cooling system includes a valve and a cooler. A motor opens the valve allowing hot fluid exhaust gas to flow into the valve. Cooling fluid continuously flows in and circulated around the valve, reducing the amount of hea... | 11/18/2003 |
| 6647972 | State determining apparatus for exhaust gas recirculation system A state determining apparatus for an exhaust gas recirculation system is provided for appropriately determining the state of an exhaust gas recirculation system including an EGR passage. An exhaust gas recirculation system is arranged in an exhaust system... | 11/18/2003 |
| 6647973 | Two-stage filtration assembly for a diesel engine crankcase ventilation system A two-stage filtration assembly for a diesel engine crankcase ventilation system which prevents splash oil from entering into the oil separator and limits oil mist contamination of crankcase air prior to passing into the exhaust port. A first stage filtra... | 11/18/2003 |
| 6647974 | Igniter circuit with an air gap Ignition systems of the kind used to ignite a difficult-to-ignite fuel oil by using energy stored in a capacitor at a breakdown for creating an ignition arc at the electrodes of a spark plug, designed to preclude interference of contaminants with conducti... | 11/18/2003 |
| 6647975 | Convertible ball projecting apparatus having a replaceable fork assembly The invention relates to a ball projecting apparatus having a ball singulator with a fork-and-actuator mechanism that is adjustable to allow the apparatus to be used for a variety of different sports. A fork assembly is adjustable or replaceable to conver... | 11/18/2003 |
| 6647976 | Adjustable back tension rope release A triggerless back tension release for use with a bow string includes a handle portion with a post extending substantially perpendicularly away from the handle portion; and a two-link release head assembly secured to a free end of the post remote from the... | 11/18/2003 |
| 6647977 | Termination unit for a coaxial flue pipe A termination unit for a through-the-wall horizontal vent of a gas combustion device having a combustion chamber and a burner, is described. The termination unit comprises a wall mounting plate which is secured to a vertical wall outer surface and about a... | 11/18/2003 |
| 6647978 | Kitchen island vent hood A kitchen island vent hood is provided which telescopes upwardly and downwardly and extends forwardly and rearwardly for use between operative and non-operative positions. In the non-operative position, the vent hood resides within a recessed area of the ... | 11/18/2003 |
| 6647979 | Solar-powered water heating system A solar-powered water heating system provides heated water to a pool in an aesthetically-pleasing, leak-resistant manner. The invention provides a heat gathering unit disposed in a tray that fits within the deck boards of a typical roof. Shingles are disp... | 11/18/2003 |
| 6647980 | Method for administration of active substances to the olfactory region The present invention relates to a method for administering a pharmaceutical preparation comprising at least one active substance to the olfactory region of a human. The method comprises administering a unit dose of the preparation by ejection from a nasa... | 11/18/2003 |
| 6647982 | Gas flow device A gas flow regulator includes a one-piece housing with an internally disposed flowmeter. The flowmeter is screwed into the housing. A fitting, such as a hose barb, extends through the housing and into the body of the flowmeter to secure the pieces togethe... | 11/18/2003 |
| 6647983 | Low-pressure valve A low-pressure valve enabling precise control of a fluid flow rate through the valve during cyclical operation of the valve. The valve is useful for controlling air delivery to a patient as part of a portable ventilator. The valve comprises a housing havi... | 11/18/2003 |
| 6647984 | Apparatus for controlling cuff pressure in an endotracheal tube Apparatus (1) for controlling pressure in a cuff (2) of an endotracheal tube (3) a pole mountable housing (25) within which an inflating medium supply pump (30) is located for supplying inflating medium to the cuff through a communicating tube (18) integr... | 11/18/2003 |
| 6647985 | Barrier surgical drape for speculums or retractors A speculum drape is provided which is adapted for attachment to a surgical speculum or retractor to preserve a sterile field at a surgical site. The speculum drape is made of a sheet of surgical drape material having an opening of a size corresponding to ... | 11/18/2003 |
| 6647986 | Wrist splint and hemostasis device A hand/wrist positioning splint to keep the hand positioned for radial artery access and to permit application of a hemostasis band to apply pressure to the radical artery puncture site to permit closing of said puncture site, is provided. The splint incl... | 11/18/2003 |
| 6647987 | Insulin delivery enhanced by coached breathing The need for the delivery of insulin by injection can be reduced or eliminated by a method whereby an aerosolized insulin formulation is delivered to a patient's lungs and the rate at which the insulin is absorbed into the blood is increased by the use of... | 11/18/2003 |
| 6647988 | Nail care system A nail care system which contains a portable case, drying compartments and drying compartment covers. The drying compartments are vertically oriented on opposite sides of the portable case. The drying compartment covers are pivotally mounted to the portab... | 11/18/2003 |
| 6647989 | Hair treatment device and method A device for use in hair treatment comprises a tube (10) having a wall constructed of elements (11, 12) extending in a direction inclined to the length of the tube, or a wall constructed of interwoven fibres (11, 12). As a result of its construction when ... | 11/18/2003 |
| 6647990 | Curling iron handle The present invention is a curling iron handle comprised of a hand grip having a first end and a second end and at least one guard. Guard extends beyond grip thereby constraining hand movement during curling iron usage. Grip and guard are aligned and rota... | 11/18/2003 |
| 6647991 | Multiple clip hair fastener A multiple clip fastener for securing sections of hair of a human being in rows and for aligning hair clips. The apparatus is a semicircle headband, retaining comb, or barrette that has a plurality of hair clips integrally attached and aligned longitudina... | 11/18/2003 |
| 6647992 | Aerosol apparatus for health, hygienic and grooming needs An aerosol apparatus for applying health or beauty products to selected portions of a person's body. The apparatus is suitable for general use but provides major benefits to physically disadvantaged persons, such as elderly, arthritic, amputee, paralytic ... | 11/18/2003 |