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 |
| 7314509 | Gas liquid phase separator with improved pressure control A gas/liquid phase separator includes a fluid inlet, a vapor outlet, a liquid outlet, and first and second valves disposed in fluid communication with the liquid outlet. Both valves are controllable in response to a fluid level in the gas/liquid phase separator. Bot... | 01/01/2008 |
| 7243673 | Gas injection device The subject invention is related to a gas injection device with back-flow leaking liquid discharge, comprising a chamber, a gas inlet conduit, a gas outlet conduit, and a liquid discharging conduit, wherein the gas outlet conduit and the liquid discharging conduit a... | 07/17/2007 |
| 7150269 | Fuel pump module having a fuel filter water drain A fuel pump module adapted for mounting within a fuel tank and including an inlet, an outlet downstream of the inlet, and a fuel pump downstream of the inlet and upstream of the outlet. A fuel filter chamber is downstream of the fuel pump and includes a fuel filter ... | 12/19/2006 |
| 6972092 | Self-venting valve end cap and method A one-piece, molded plastic end cap (1) is designed for installation in a diesel engine fuel filter. The end cap (1) comprises a disk-shaped filter support component (2), with a top portion adhesively connected to the fuel filter center tube ( | 12/06/2005 |
| 6953527 | Fuel tank with water trap A fuel tank for use with small internal combustion engines, the fuel tank having an inlet and an outlet and storing a quantity of fuel therein. A hydrophobic barrier is positioned within the fuel tank in flow communication with the outlet, and permits the passage of... | 10/11/2005 |
| 6913040 | Hydraulic fluid reservoir A hydraulic fluid reservoir apparatus for an automotive power steering system comprises a filter chamber, and a filter parallel to a vertical axis and dividing the filter chamber into an upstream region and a downstream region. The reservoir apparatus also includes ... | 07/05/2005 |
| 6810901 | Air compressor with foot-actuated condensate valve A foot-actuated condensate drain for an air compressor tank. The foot-actuated condensate drain includes a lever that is connected to a valve on the bottom of the air compressor tank. Movement of the lever, for example by a user's foot, causes the drain valve to ope... | 11/02/2004 |
| 6694999 | Systems for well gas collection and processing Well gas collection systems and methods for improved efficiency, structural integrity, and convenient application provide a multiple well header system, a header element with upper and lower ends and a plurality of inlets in fluidic communication with the... | 02/24/2004 |
| 6431194 | Condensate removal protection apparatus and method therefore The present invention discloses an apparatus and method for protecting a condensate removal device from damage that may be caused when the condensate removal device comes into contact with foreign objects. The present invention discloses placing a shield ... | 08/13/2002 |
| 6257210 | Compressed natural gas (CNG) fueling system for CNG vehicles A CNG fueling system includes a plurality of CNG tanks for storing compressed natural gas, a supply pipe for connecting the tanks to a combustion chamber of a internal combustion engine, valves provided in the supply pipe, a low pressure regulator for reg... | 07/10/2001 |
| 6119711 | Multiple well header system for collection of methane coal gas A multiple well header system includes an upright header, a plurality of inlet pipes and an outlet pipe. The header has a substantially vertical orientation relative to the ground. The inlet pipes are for interconnection with separate gas wells to allow f... | 09/19/2000 |
| 6109289 | Drain valve A drain valve of an air braking system for vehicles has a drainage piston, a main sump and auxiliary sump. Moisture passes from the main sump to the auxiliary sump in response to pressure at a signal port which closes off air supply through ports. A reduc... | 08/29/2000 |
| 5935427 | System for draining a liquid storage tank The present invention relates to a system which makes it possible to remove undesirable liquids, generally an aqueous phase, which precipitate to the bottom of tanks for storing liquid products. Use is made of a drainage device (30) which comprises a conc... | 08/10/1999 |
| 5893385 | Liquid discharging device for discharging liquid stored on a bottom wall of an interior of a compressed natural gas tank of a vehicle According to the present invention, there is provided a liquid discharging device for discharging liquid stored on a bottom wall of an interior of a compressed natural gas tank of a vehicle, comprising a liquid discharging pipe for discharging the liquid ... | 04/13/1999 |
| 5606989 | Self-venting valve arrangement A self-venting valve having its principal parts molded of nylon reinforced with glass fibers is mounted in the bottom of a fuel filter assembly to drain water and other contaminants from the assembly. The self-venting valve includes a plunger portion with... | 03/04/1997 |
| 5391361 | Condensate separator A condensate separator includes a vertically oriented cylindrical body with an inlet at its bottom and an outlet at its top. The cross-section of the body is at least an order of magnitude larger than the cross-section of the inlet.... | 02/21/1995 |
| 5285809 | Drain discharge device A drain discharge device for discharging effluent comprises a valve with a single outlet and a plurality of inlets that selectively connects the single outlet to one of inlets in turn. The inlets, each of which corresponds to an outlet of an effluent disc... | 02/15/1994 |
| 5205314 | Air compressor condensate removal system An expansion chamber is attached between two air compression stages of an air compressor or between an air compression stage and the air holding tank of the air compressor. The expansion chamber has a cylindrically shaped wall with top and bottom portions... | 04/27/1993 |
| 5205315 | Automatic wet tank drain valve The manual valve normally attached to the wet tank of an air pressure system in a motor vehicle which accumulates moisture is replaced by an automatic valve which has an inlet port connected to the drain line from the wet tank and an outlet port vented to... | 04/27/1993 |
| 5154204 | Automatic drain valve for a compressed air system A pneumatically actuated drain valve device for venting the moisture in an air dryer to atompshere including a rolling diaphragm for linearly moving a piston stem assembly to unseat a spring and pressure biased stainless steel ball valve from its conicall... | 10/13/1992 |
| 4896692 | Pilot operated control valve A pilot operated control valve particularly adapted for automatic periodic operation to bleed condensate from compressed air lines or periodically supply lubricant to desired locations in various machines may be actuated electrically by sensors, timers, o... | 01/30/1990 |
| 4881567 | Liquid removal system A liquid removal system particularly adapted to remove water from a gas main. The system includes the combination of highly flexible, low-friction tube fitted with an internal stainless steel stiffener, this assembly having a weighted nose guide to ensure... | 11/21/1989 |
| 4877218 | Drain valve device A drain valve device mounted on the bottom of a pressure tank for the purpose of disposing of unwanted, accumulated waste liquids in the tank. The valve portion of the device is of a type comprising a stem-mounted disc moving longitudinally against, or aw... | 10/31/1989 |
| 4855041 | Fluid filter drain assembly A drain assembly for diesel engine fuel filters and the like consists of separate drain and vent valves mounted closely adjacent one another in the bottom wall of the collection bowl of the filter and intercoupled so that actuation of the drain valve also... | 08/08/1989 |
| 4838299 | Pulsation dampener apparatus Pulsation dampener apparatus includes a cylindrical housing having three baffles dividing the interior of the housing into four chambers. A conduit within the apparatus connects the top and bottom chambers, and a second conduit connects the second, third,... | 06/13/1989 |
| 4733686 | Apparatus for removing water vapor from compressed air The disclosed apparatus comprises means for effectively removing excess moisture from compressed air such as employed, for example, in spray painting applications. The outlet line from an air compressor is connected to the inlet of hollow coil of metal wi... | 03/29/1988 |
| 4724862 | Drain valve There is disclosed an automatic drain valve which consists of a control block with a central bore and a coaxial inlet bore. The central bore and the inlet bore are divided from each other by a seal which is seated in the inlet bore and held in place by a ... | 02/16/1988 |
| 4637440 | Ventless liquid recovery system for pressurized gas lines A first low pressure storage tank is provided including a liquid inlet and a valved liquid outlet as well as a vapor outlet. Gas pump structure is also provided including suction and discharge ports and a high pressure storage tank is provided including a... | 01/20/1987 |
| 4595030 | Fuel tank for a water craft A fuel tank comprising a wall forming a main container for fuel, and a lateral extension from said main container. The extension is located adjacent the bottom of the main container, and the extension has at least one tranparent or translucent wall so tha... | 06/17/1986 |
| 4592381 | Multiple stage device for condensate removal from a steam piping system A condensate drainage device for a steam system which includes a series-connected arrangement of orifice-type devices particularly suitable for relatively small condensate drainage capacity. The orifice-type devices are selected for installation in housin... | 06/03/1986 |
| 4473092 | Automatic drain system for compressed air systems and the like A drain for a compressed air system which drains the condensate without losing compressed air. The drain has a valve member with a cavity rotatable from a condensate receiving position to a condensate emptying position and a standpipe with its lower end c... | 09/25/1984 |
| 4409005 | Method and apparatus for separating liquid and solid contaminants from a flowing gas A separator device, and a method, for removing water and foreign matter entrained in a compressed fluid is disclosed. The device includes a housing having an inlet port fluidly connected to the compressed fluid source, an outlet port and a chamber fluidly... | 10/11/1983 |
| 4353387 | Drainage device The drainage device includes a drainage chamber (9) which communicates via an inlet pipe (20) with a compressed air tank and is provided with an outlet orifice (16), elements (5,24) for closing the outlet orifice and elements (5,19,1,21) for opening the o... | 10/12/1982 |
| 4234008 | Fluid choke A fluid choke for controlling fluid flow, such as condensate draining from a high pressure steam line, that does not require the use of any separate filters and constructed entirely from a section of bar stock including a reduced diameter inlet section ha... | 11/18/1980 |
| 4079744 | Drain valve This invention relates to a drain valve and is particularly adapted for draining water or other liquid from the bowl of a filter for pneumatic systems. The valve includes a bendable tubular body of flexible material and there is a poppet for normally clos... | 03/21/1978 |
| 4030517 | Condensate valve assembly A condensate valve comprising a housing having a chamber for the accumulation of liquid and an outlet passage from the chamber leading to a central chamber from which liquid is discharged to the atmosphere. A double-acting valve member controls the outlet... | 06/21/1977 |
| 4018579 | Apparatus for producing dry compressed air Apparatus for producing dry compressed air comprises a compressor, a separator to remove condensates, an adsorption filter to filter and dry the air and a storage tank. A valve for controlling reverse flow of air from the storage tank through the filter t... | 04/19/1977 |