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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 |
| 7328548 | Devices and methods for introducing air into, or removing air from, containers A device comprising a plug positioned within a housing to regulate air within a container, for example, plastic storage containers or bags. The plug is positioned within the housing to occlude a port hole in the housing. The housing is positioned within a container ... | 02/12/2008 |
| 7325381 | Devices and methods for introducing air into, or removing air from, containers Devices comprising a plug positioned within a housing to regulate air within a container, for example, plastic storage containers or bags. One embodiment utilizes a plug that occludes an opening in a housing. The plug is displaced from the opening to inject or evacu... | 02/05/2008 |
| 7140520 | Spigot for a beverage dispenser A spigot for a beverage container includes a body having a passage with first and second ends formed therethrough. An annular shoulder extends into the passage proximate the first end thereof and an annular valve seat is formed proximate the second end. An elastomer... | 11/28/2006 |
| 7028922 | Soap dispenser system and valve arrangement therefor A soap dispenser system includes a venturi suction tube having a soap supply bore intersecting the main through bore; a soap dispenser controlling dispensing of soap from a container; and a supply tube connecting the soap dispenser to the soap supply bore of the suc... | 04/18/2006 |
| 6938642 | Pressure regulator A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaph... | 09/06/2005 |
| 6910466 | Elastomeric vapor flow control actuator with improved mechanical advantage A canister purge valve for regulating fuel vapor flow between a fuel vapor collection canister and an intake manifold of an internal combustion engine. The canister purge valve includes a body having a wall defining a passage extending between a first port and a sec... | 06/28/2005 |
| 6889668 | System for extending an elastomeric vapor flow control actuator A system for flowing fuel vapor through a canister purge valve includes a valve body having a wall that defines a passage between a first port and a second port. The first port may be adapted for fuel vapor communication with a fuel vapor collection canister, and th... | 05/10/2005 |
| 6851938 | Magnetic pumping system A magnetic pumping system includes a pump, capable of urging a fluid therefrom during a forward stroke and a return stroke, having a piston disposed within a cylinder defined by a pump body, and a driver disposed external to the pump body. The driver is capable of m... | 02/08/2005 |
| 6619308 | Pressure regulator A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected t... | 09/16/2003 |
| 6530395 | Check valve arrangement A check valve arrangement utilizes a disc (15) for a valve member while eliminating the need for a ball. A valve seat in the common sense is unnecessary, too. Instead, a substantially flat surface (13) interacts with the disc (15). In order to allow unidi... | 03/11/2003 |
| 6357723 | Amplified pressure air driven diaphragm pump and pressure relief valve therefor An air driven diaphragm pump having two, opposed pumping cavities. A center section assembly between the pumping cavities includes a cylinder and a power amplifier piston. The power amplifier piston as well as the diaphragms are coupled with a common cont... | 03/19/2002 |
| 6273117 | Pressure regulator A device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the dia... | 08/14/2001 |
| 6158458 | Medical intravenous administration line connectors having a luer or pressure activated valve Medical intravenous administration connectors according to a first embodiment include a first coupling member having a female luer, a valve member having a substantially rigid stem and a substantially resilient body with a sealing surface, and a second co... | 12/12/2000 |
| 6076804 | Hydraulic controlling valve A hydraulic valve for controlling the flow of a pressured liquid with a housing that has an inlet and an outlet with a pivotally mounted handle that actuated a valve stem member housed within an internal bore with a counter bore step surface. An O-ring me... | 06/20/2000 |
| 5782816 | Bi-directional valve and method of using same A connector adapted to facilitate medicinal access into an intravenous tube includes a housing having a base and a cap defining a channel through the housing. A valve element disposed in the channel includes a plug and elastomeric shaft which biases the p... | 07/21/1998 |
| 5564468 | Seat-style pressure-relief valve The pressure-relief valve (10) has a valve member (18), which interacts with a valve seat (17). The valve member (18) is forced with a certain pretensioning against the valve seat, which pretensioning is applied by way of a diaphragm (21), either directly... | 10/15/1996 |
| 5535785 | Luer-activated check valve A Luer-activated valve constructed of a single-piece valve element with integral biasing base and ventilated riser disposed within a valve housing providing a valve seat and buttress for the biasing base.... | 07/16/1996 |
| 5447257 | Valve trumpet spring and seal A compression spring is formed of elastic material in a shape resembling a trumpet horn. Novel valve structures incorporate the trumpet horn spring as a component, the latter of which serves therein to make the valve self restoring and also to provide a f... | 09/05/1995 |
| 5323807 | Stop drop valve A check valve having a reduced or zero pressure drop and more particularly such a valve in combination with a spray nozzle. The check valve includes a sealed gas chamber which has within it a closed-cell foam element which insures that some gas remains in... | 06/28/1994 |
| 5299718 | Bottle closures The invention comprises a reusable closure for temporarily sealing a container to prevent escape of liquid and gas from the container with the closure having a molded, one-piece housing having internal threads for securing the housing to a container and a... | 04/05/1994 |
| 5288214 | Micropump A micropump comprises a housing for defining a pump chamber, an inlet valve disposed in an inlet flow passage, a outlet valve disposed in a outlet flow passage, and an actuator for changing a volume of the pump chamber. The actuator is formed of a thermo-... | 02/22/1994 |
| 5285931 | Pressure capsule for spray can and spray can which utilizes such pressure capsule A pressure capsule for a spray can includes a housing with a chamber disposed therein and a valve mounted within a wall of the housing, the valve is capable of being moved into an open and a closed position such that the valve is moved into the closed pos... | 02/15/1994 |
| 5285805 | Stretch valve method and apparatus A stretch valve which achieves precise control of fluid flow rates through the use of a cylindrical elastomeric valve element. This elastomer element is installed within the cylindrical flow path of a valve body. The flow path has a diameter that is sligh... | 02/15/1994 |
| 5275309 | One way valve with unitary valve element An apparatus is disclosed for an improved one-way valve comprising a base for mounting in a chamber with a valve surface engaging with a sealing surface to close an input aperture of the chamber. A flexible web is interposed between the base and the valve... | 01/04/1994 |
| 5215522 | Single use medical aspirating device and method A reliable, contamination-resistant, single-use, disposable, medical, non-ventilating, aspirating device and method. The device releasibly connects to and aligns with an indwelling endotracheal tube to accommodate advancing of an aspirating catheter tube ... | 06/01/1993 |
| 5017100 | Integral pump and check valve apparatus A combined and integral pump and check valve combination is disclosed herein for the control of fluid flow through a fluid pump portion having an inlet port leading to a gland cavity occupied by a movable sealing element yieldably held in position closing... | 05/21/1991 |
| 4921017 | Check valve A check valve comprises a valve body and a plurality of blades--all made of plastics and integral with one another. The blades extend straight in the axial direction of the valve body. The blades undergo elastic deformation when pushed onto a tapered inne... | 05/01/1990 |
| 4908018 | Method and apparatus for injecting fluids into an IV line Apparatus including a manifold and improved check valves for selectively injecting supplemental fluids into a closed IV line extending from a source of saline solution to a patient during an operation. Also disclosed are a plurality of connected manifolds... | 03/13/1990 |
| 4856554 | Vacuum check valve and method of control A high flow vacuum check valve incorporates a plurality of rubber dampening feet located on the sealing bead side of the valve poppet. The feet extend axially slightly beyond the sealing surface of the sealing bead so as to have an axial compression inter... | 08/15/1989 |
| 4853160 | Apparatus for adjusting a variable length valve member for a needle valve A carburetor including a valve apparatus comprising a wall defining a chamber having an axis and having therein an inlet communicating with the chamber and an outlet communicable with the chamber and having a valve seat, a valve member having two opposite... | 08/01/1989 |
| 4828126 | Baby bottle having an air inlet valve The baby bottle according to the invention has identically threaded openings in each end to accept interchangeable screw-on fixtures. One fixture contains a nipple and the second fixture contains a spring-loaded valve. The valve includes a central channel... | 05/09/1989 |
| 4798226 | Charging valve A charging valve consisting of a valve sleeve and a valve stem fixed in the interior thereof comprises a valve which acts by compression and tension, the tension or compression being exerted by resilient parts of the valve stem adjacent to both valves.... | 01/17/1989 |
| 4794943 | Fluid control valve assembly A valve assembly (10) for controlling high pressure gas with low controlling gas pressures. The assembly includes a valve housing (12) having a cavity (22), an inlet port (26) and two outlet ports (28, 30). Mounted within the housing in communication with... | 01/03/1989 |
| 4773571 | Seltzer package, valve, poppet and spring A package (10) for dispensing a fluid (26) in the package under gas pressure has a biaxially oriented polyethelene terepthalate bottle (12) with a neck (14). A dispensing head (22) is attached to the neck (14). A normally closed valve (16) is mounted in t... | 09/27/1988 |
| 4723694 | Fluid dispensing valve mechanism and assembly A fluid dispensing valve mechanism including a valve body member having an annular seat portion which is contacted by the bushing portion of the shaft-bushing member to effect a seal. The shaft is interposed between the bushing and a contact point on a to... | 02/09/1988 |
| 4681139 | Elastomer ball check valve The disclosure is of a ball check valve comprising a valve body with a flow passageway completely through it. The flow passageway is counterbored at one end to form a conical seat and at the other end to form a radial shoulder. The valve member comprises ... | 07/21/1987 |
| 4681132 | Check valve with preset cracking pressure A check valve is disclosed having a preset cracking pressure. The check valve comprises a valve element reciprocatably positioned within a valve body, both the valve body and the valve element including valve seats which seal together when the valve eleme... | 07/21/1987 |
| 4597511 | Positive one-way check valve An insertable, integrally molded, one-piece valve assembly for use in the intake bore of the pump of a liquid dispensing device has a body portion and a top portion which is spaced from the body portion by resilient links. The body portion is pressed into... | 07/01/1986 |
| 4595172 | Vent valves for prosthetic devices A valve especially designed for use in a prosthetic device such as an artificial limb wherein the limb stump is mounted within a mating socket provided by the prosthetic device and is firmly secured therein by vacuum sealing, the valve being is connected ... | 06/17/1986 |
| 4583925 | Suction pump A suction pump which includes a valving member including a one way check valve, a cylinder and sliding cup seal connected to said check valve so that a negative pressure can be developed by the pump. The valving member includes a valving seat, a valving b... | 04/22/1986 |
