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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 |
| 7140316 | Boat drain valve A boat drain valve which incorporates a valve to open and close the drain valve. The drain valve is connected to the boat hull in a manner that provides a straight channel through the drain valve. A handle with an extension positions the grip of the handle in a loca... | 11/28/2006 |
| 7021501 | Faucet lever lock A lock for a liquid dispensing faucet lever includes a locking member that is attachable to the faucet and can be positioned in a locked position where the lever seats in a notch formed therein to prevent moving the lever from the closed position to the open positio... | 04/04/2006 |
| 6935536 | Cap for a container Cap for a container, including a body having an inlet, a spout and a passageway therebetween. The cap also includes a valve movable between a first position wherein the passageway is blocked and a second position wherein the passageway is at least partly unblocked, ... | 08/30/2005 |
| 6899120 | Yard hydrant A yard hydrant has an elongated wet pipe with a plunger that seals against the inside of a well casing. Lifting a pivoting handle at the top of the wet pipe lowers the wet pipe which opens a normally closed supply valve. Pressurized water can then flow up the wet pi... | 05/31/2005 |
| 6802341 | Tap A tap (4) including a tap body (6) within which is located a valve (14), an operating handle (12) mounted on the body and coupled to the valve, a security button (42) which is interlocked with the handle and/or valve, the arrangeme... | 10/12/2004 |
| 6148851 | Valve lock apparatus and lockable valve A lock apparatus for a valve that has a valve body and an actuator stem protruding therefrom for selectively rotating a flow control member within the valve body between open and closed positions and a handle attached to the valve stem that defines a firs... | 11/21/2000 |
| 6079448 | Faucet assembly of a water treatment system A faucet assembly includes a body connected to an outlet member on the top thereof and a water pipe connected to the underside thereof, a valve member movably received in the body and operatably connected to the outlet member so that when pushing the outl... | 06/27/2000 |
| 6032922 | Fluid flow control valve and actuating mechanism A fluid flow control valve is provided comprising a valve seat inside a housing for defining a passage opening in the housing and a valve seal positioned against the valve seat for closing off fluid flow. A push rod extends from the valve seal and through... | 03/07/2000 |
| 5971354 | Tamper resistant faucet handle A tamper resistant faucet handle is provided for locking conventional sink or bath faucets in a closed or partially closed position. The tamper resistant faucet handle includes a handle body mounted to the flow control lever and a movable interference plu... | 10/26/1999 |
| 5907189 | Conformal diamond coating for thermal improvement of electronic packages One aspect of the invention relates to a method for providing a semiconductor package with a thermally conductive coating, the semiconductor package including a package substrate having a plurality of electrically conductive traces formed thereon, an uppe... | 05/25/1999 |
| 5887850 | Spring loaded valve handle A unitary handle structure to be secured to the shaft of the valve and cooperate with the stops on the body to delimit and lock the valve element in its open and closed positions. The handle structure includes a socket portion fixed to the stem of the val... | 03/30/1999 |
| 5819791 | Check valve including means to permit selective back flow A preferred embodiment of FIGS. 1-3 includes a check valve (10) with a pair of semicircular check valve members (34, 36) normally permitting fluid flow in one direction and blocking fluid flow in an opposite direction. Semicircular valve member (36) is re... | 10/13/1998 |
| 5772177 | Valve latching device for single handed operation An improved latch mechanism for a fluid flow control valve. The latch mechanism having a latch body, a spring, a plunger and a thumb release lever for disengagement of the plunger. The latch mechanism is attached to a valve handle which controls the fluid... | 06/30/1998 |
| 5741003 | Child-resistant handle A child-resistant handle to be mounted to a valve stem to which is affixed a cogwheel adapter by a shoulder screw. The shoulder screw rotatably mounts the freely rotatable handle to the valve stem. The handle has an inverted cup shape that extends over an... | 04/21/1998 |
| 5709112 | Tamperproof locking and latching mechanism for rotatable controls An improved spring-loaded latching and locking mechanism for a rotatable control of the type having a stem journaled in a body and rotatable about an axis in a boss on the body. The stem has a protuberance for engagement with the handle. The handle compri... | 01/20/1998 |
| 5667193 | Safety shut-off device for gas welding apparatus A safety shut-off device is disclosed. The device is adapted for use with a gas welding apparatus, the apparatus having a torch handle and a supply of a pressurized combustion reagent. The safety shut-off device has a valving assembly that is adapted to b... | 09/16/1997 |
| 5622201 | Bucket valve with removable handle A bucket valve with a removable handle includes a tubular valve body, a piston disposed with the valve body and a crank arm integrally formed of a central sleeve and two spaced fingers. The fingers are pivotally retained to the piston. A drive shaft is dr... | 04/22/1997 |
| 5449144 | Faucet valve with safety handle A faucet for controlling the dispensing of liquids includes a valve body having a valve chamber with a valve element movable between first and second positions for controlling flow between an inlet and the outlet. An operating stem extends from the valve ... | 09/12/1995 |
| 5439197 | Flow rate control valve In a flow rate control valve having a handle (12) for rotating a stem (9), the handle being locked to a bonnet (3) by a lock screw (14), the handle (12) comprises a handle main body (12') fixed to an upper end of the stem (9), and a tubular lock handle (1... | 08/08/1995 |
| 5435339 | Manual air relief valve A manually operable pressure relief valve for swimming pool filter systems and the like, including a valve housing, a valve stem movable axially in the housing to open and close the valve, and a top cover that serves as an operating handle. The valve hous... | 07/25/1995 |
| 5419530 | Micrometer-controlled linear flow rate fluid flow valve assembly A micro-valve assembly for providing precise regulation of fluid flow between an input port and an output port comprises a valve body configured to installed with the valve assembly and forming therewith a fluid flow chamber between the fluid flow rate co... | 05/30/1995 |
| 5411048 | Fluid control valve with latching handle assembly A valve handle latching assembly having a selectable latching slider which engages a detent on a fluid control device such as a ball valve. During assembly, a particular slider is selected for inclusion in the final assembly resulting in a valve tailored ... | 05/02/1995 |
| 5188335 | Ball valve with lockable security device A ball valve comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball element having a conduit therethrough which communicates with the inlet and outlet ports. The ... | 02/23/1993 |
| 5183073 | Handle locking mechanism for quarter turn valves A rotatable control device including a body housing a control structure and having an external box; a control shaft journalled in the boss for rotation about an axis and having an internal portion connected to the control structure and an external portion... | 02/02/1993 |
| 5133938 | Lockable valve mechanism for sample pouch A lockable valve mechanism for introducing a liquid sample into an associated reaction vessel includes a valve body, and a valve member rotatably mounted thereon. The valve member is movable from an open position, wherein inlet and outlet passages of the ... | 07/28/1992 |
| 5115834 | Valve-locking device A lever-operated rotary valve having a rotary body for permitting fluid flow therein includes a locking device for selectively locking and unlocking the operating handle such that the operating handle of the rotary valve can be locked in a plurality of pr... | 05/26/1992 |
| 5014528 | Tamper-proof locking mechanism for quarter turn valves A tamper-proof locking mechanism for a rotatable control device, such as a quarter turn valve including a valve member connected to a stem journalled in a body housing the valve member and an operating handle connected to the stem for rotating the valve m... | 05/14/1991 |
| 4971289 | Valve assembly and locking means therefor A valve assembly comprising a valve having a housing and a valve element disposed in the housing and movable between closed and open positions, the valve element having a nut portion and a wing portion, the nut portion projecting out of the housing and ha... | 11/20/1990 |
| 4909275 | Latching handle A ball valve is described having a latching handle with a latch plate having raised lugs that engage the handle, a latch mechanism or both to act as detent stops in predetermined rotational positions. A flat spring rolled at one end urges the latch mechan... | 03/20/1990 |
| 4848724 | Ball valve with handle locking mechanism A ball valve of the type comprising a body including a valve chamber having inlet and outlet ports, and a rotatable ball element disposed within the valve chamber, the ball defining a conduit communicating with the inlet and outlet ports. The ball is actu... | 07/18/1989 |
| 4786409 | Duplex filter assembly Duplex filter apparatus suitable for pressure or suction applications includes dual filter housings and a central valve housing having dual, cylindrical, three-way plug valves. Four glass-filled Teflon sleeve seals, each having an inner cylindrical cut ed... | 11/22/1988 |
| 4770388 | Latched valve handle A latching device for the actuator in a valve installation. The actuator includes a handle for rotating a valve stem and a latch slidably mounted on the handle. The latch has one edge which abuts a stop when in the closed position and an opposed, angularl... | 09/13/1988 |
| 4658907 | Fire extinguisher safety pin tag holder A safety pin for fire extinguishers. The pin has a prong interfitted in registering holes of the extinguisher to prevent operation until removed by grasping a finger loop and extracting the pin. The finger loop is connected to a stabilizer extension of th... | 04/21/1987 |
| 4460153 | Lever operator for a valve control and actuating mechanism A lever operator for use primarily with valves of the plug type in which a tapered plug is raised to unseat associated slips and then rotated to a valve open position during opening of the valve and is rotated to a valve close position and lowered to seat... | 07/17/1984 |
| 4305421 | Fluid dispensing system A system for dispensing fluid from a container. The container is pressurized by supplying gas into the container thereby forcing the fluid out of the container through a siphon tube and an outlet valve in the container. The system utilizes a valve assembl... | 12/15/1981 |
| 4304256 | Torque transmitting assembly for rotary valve member A torque transmitting assembly for effecting rotation of a valve member such as a butterfly valve is hermetically sealed to the valve housing. It includes a rotor member having a plurality of circumferentially spaced permanent magnets of opposite polarity... | 12/08/1981 |
| 4274445 | Pressure balanced three-way transfer valve A pressure-balanced three-way transfer valve for controlling fluid flow into one of two fluid lines includes a pair of cam actuated valves actuated by a single actuator to move a respective valve to an open and closed position. Pressure balancing of the v... | 06/23/1981 |
| 4203572 | Locking ball valve A locking type ball valve or a lock for a ball valve of the type having a handle movable through a right angle to open the valve in one position and close it in the other and a pair of stops on the housing of the valve to limit the movement of the handle ... | 05/20/1980 |
| 4181143 | Valve assembly and coupler therefor An improved valve system for obtaining access to a container of fluid. In a container of fluid, and particularly a keg for beer, a valve assembly receiving member or keg neck extends from the top of the container. A sealing mechanism is provided to secure... | 01/01/1980 |
| 4159102 | Locking mechanism for coupler and valve assembly An improved valve system for obtaining access to a container of fluid. In a container of fluid, and particularly a keg for beer, a valve assembly receiving member or keg neck extends from the top of the container. A sealing mechanism is provided to secure... | 06/26/1979 |
