Did You Know...
...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...
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| Number | Title | Issue Date |
| 7775502 | Ball valve with a rotatable body capable of being kept out of substantial contact with a seat member A ball valve having a reduced sized is provided, that includes a first shaft that extends into a housing accommodating a valve body along a rotational axis of the valve body and is connected to the valve body; and a second shaft that extends into the housing to be o... | 08/17/2010 |
| 7150446 | Dual lift system Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sea... | 12/19/2006 |
| 7028705 | High torque failsafe valve operator A fluid valve operator for moving a moveable valve element such as a disc (14) that is pressed forcefully against a surface of a valve frame (12). The valve operator includes first and second electric gear reduction motors (22, 24) that each has... | 04/18/2006 |
| 6978977 | Dual lift system Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sea... | 12/27/2005 |
| 6289911 | Mud saver kelly valve A mud saver valve is described that features an outer housing that retains upper and lower valve pistons therewithin. The pistons coordinate to provide a check valve so that fluid, such as drilling mud, is permitted to flow in one direction while under pu... | 09/18/2001 |
| 6276394 | Compact stem set with load-balanced rollers for non-lubricated double block and bleed plug valves In the stem set configuration for a double block and bleed plug valve, the improvement provides an operator which can be significantly shorter and more compact than conventional operators for such valves. The invention makes use of a novel nesting of the ... | 08/21/2001 |
| 6206029 | Valve of vacuum apparatus A valve of a vacuum apparatus with a valve seat body having left and right communicating openings opposed to the two vacuum chambers, respectively, a valve body movable in the axial direction of the valve seat body and rotatable around the center axis the... | 03/27/2001 |
| 6196520 | Air distribution device with a shutter of the drum type, in particular for a motor vehicle An air distribution device comprises a casing (10) provided with a cylindrical wall (12) having at least one air passage opening (14, 16), a shutter (20) mounted so as to pivot with respect to an axis of rotation (X--X) and having a generally cylindrical ... | 03/06/2001 |
| 5409149 | Mixer housing gate assembly A dump gate assembly as for a feed mixer housing including first and second hinged gates swingable between upper closed condition and lower open condition, each gate having a cam track preferably in the form of a configurated gate stiffener cooperable wit... | 04/25/1995 |
| 5333833 | Rotary ball valve with lifting ball A ball-valve member, which in its valve-closed condition must have circumferentially continuous sealed contact with its seat, is mounted for rotation about an axis which is eccentrically gyrated in the course of limited rotation of an actuating element th... | 08/02/1994 |
| 5228645 | Rotary ball valve with lifting ball A ball-valve member, which in its valve-closed condition must have circumferentially continuous sealed contact with its seat, is mounted for rotation about an axis which is eccentrically displaced in the course of limited rotation of an actuating element ... | 07/20/1993 |
| 5195719 | Butterfly valves with actuators carried on valve plate A butterfly valve (30) in which an actuator (38) is secured to the plate (36). The actuator (38) is carried with the plate (36) when the latter moves. The plate (36) may be revolvable and translatable relative to the shaft (42). The actuator (38) may be u... | 03/23/1993 |
| 5106052 | Air damper apparatus Provided is a damper for controlling air flow through an air duct. The damper includes a mounting fame secured to the interior of the duct which has a circular opening for air flow therethrough when the damper is open. A circular damper plate is provided ... | 04/21/1992 |
| 5074523 | Device The application describes a valve device which can be used to open and shut a laterally arranged inlet in an inclined wall of a mixer granulator and which can be used in an automatic operation. The valve device comprises a main body (1) and a piston (2), ... | 12/24/1991 |
| 5048568 | Quick opening slide valve A slide valve is described that has the capability to open rapidly at a rnably controlled speed. The valve has two concentric tubes with each tube having a plurality of slots. In the valve closed position the slots are misaligned both axially and circumf... | 09/17/1991 |
| 4967997 | Butterfly valve with intra-shaft actuator means A butterfly valve (30) is described in which the plate member (32) is in facing relationship with a hollow shaft (34) and is moved by pistons (50, 52) disposed in the shaft. The pistons (50, 52) are mechanically coupled to the plate member (32) by cam fol... | 11/06/1990 |
| 4957221 | Air tight storage silo A improved silo is provided having a pair of pivoting receiver gates overlying a pair of receiver openings and a pair of pivoting discharge gates overlying a pair of discharge openings. A deformable seal is secured to the silo between the receiver opening... | 09/18/1990 |
| 4945949 | Reduce height dust valve A dust trap comprising a pair of coaxially mounted dust valves. Each valve has a valve seat and flapper plate and actuator shaft which coacts with the flapper plate to cause it to initially slide and then pivot as the valve opens.... | 08/07/1990 |
| 4858735 | Stationary pivot mechanism for use with a damper An improved pivot assembly operable on an air flow controlling disk, initially to move the disk from a closed position over a damper opening to an intermediate open position away from the opening and subsequently to pivot the disk to a fully open position... | 08/22/1989 |
| 4753417 | Gate valve for vacuum processing apparatus A gate valve for sealing an opening in the wall of a vacuum processing chamber is disclosed. The valve includes a gate having a pair of wheels mounted on opposite ends of the gate and a curved track aligned and shaped to guide the wheels through an angle ... | 06/28/1988 |
| 4726391 | Rotary switching device provided with an axially displaceable conical chamber The invention relates to a rotary switching device having a conical chamber permitting modification of the supply to the apparatus to which it is allocated, by reversing the fluids or the directions of circulation of the fluids in the ducts. This switchin... | 02/23/1988 |
| 4687179 | Automatic valve actuator and control system A valve actuator control system, although suitable for many control functions, is especially adapted for remote control of plug-type valves utilizes a unique configuration providing a unitary explosion-proof container to house all electrical components an... | 08/18/1987 |
| 4669701 | Shut-off apparatus The apparatus comprises a disk shaped shut-off flap located in the passage of a main body. The shut-off flap is mounted such to a rocking shaft that the flap can be lifted off its seat during one phase of movement of the rocking shaft and may be rotated i... | 06/02/1987 |
| 4666124 | Valve operator for a plug-type valve An improved cam sleeve 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 ... | 05/19/1987 |
| 4657222 | Valve A valve comprising a valve body having a tapered conical bore and an opposed inlet and outlet openings. A tapered cage abuts the conical bore. The cage is designed for easy replacement. A stopper is arranged within the cage. The stopper has a control vane... | 04/14/1987 |
| 4586693 | Shut-off apparatus The apparatus comprises a disk shaped shut-off flap located in the passage of a main body. The shut-off flap is mounted such to a rocking shaft that the flap can be lifted off its seat during one phase of movement of the rocking shaft and may be rotated i... | 05/06/1986 |
| 4498371 | Direct acting rotary actuator cylinder This invention relates to direct acting rotary actuator cylinders wherein the linear motion of the piston is directly converted to angular motion by a means completely enclosed within the cylinder, which means comprises a slidable partitioning body engagi... | 02/12/1985 |
| 4470319 | Valve actuating mechanism A valve actuating mechanism for valves particularly of the plug valve type wherein a plug member is movable between operative positions by both linear and rotary movement. The valve actuating mechanism incorporates means for imparting linear movement to a... | 09/11/1984 |
| 4436280 | Valve actuator mechanism for lift-turn type valves A valve actuator mechanism for a lift-turn type valve having a valve element that is operated by first linear unseating movement, rotational repositioning movement and linear reseating movement. First and second actuator stems are supported by an actuator... | 03/13/1984 |
| 4385746 | Four-way plug valve A rotary lift-turn type plug valve mechanism includes a valve body and bonnet structure defining a tapered valve chamber that receives a tapered plug member which is operated by linear and rotary components of movement to achieve valve operation. External... | 05/31/1983 |
| 4377179 | Pressure balanced ball valve device A ball valve is turned relative to its seat by means of three concentric sleeves mounted within a housing bore. Pins carried by the middle piston sleeve extend outward into slots in an outer carrier sleeve and inward into cam grooves in the outer wall of ... | 03/22/1983 |
| 4288060 | Sequenced drive for rotary valves A sequenced drive for rotary valves which provides the benefits of applying rotary and linear motions to the movable sealing element of the valve. The sequenced drive provides a close approximation of linear motion while engaging or disengaging the movabl... | 09/08/1981 |
| 4286625 | Four-way plug valve A rotary lift-turn type plug valve mechanism includes a valve body and bonnet structure defining a tapered valve chamber that receives a tapered plug member which is operated by linear and rotary components of movement to achieve valve operation. External... | 09/01/1981 |
| 4280681 | Center link disc valve A disc-type valve is disclosed which provides a design by which the valve disc can be positively and uniformly lifted laterally off the valve seat so as to prevent abrasion of the sealing surface and/or the valve seat which might otherwise be caused by tr... | 07/28/1981 |
| 4262693 | Kelly valve A valve adapted for installation at the lower end of a drilling kelly for closing the bore of the kelly when adding a section of drill pipe so that the mud content of the kelly is not discharged onto the derrick floor; the valve also being adapted with mi... | 04/21/1981 |
| 4253640 | Actuation system for valve with compound closure movement A valve actuation system is provided for a valve of the type wherein at least two separate movements are utilized to achieve either opening or closing thereof. The actuation system includes a pair of hydraulic or pneumatic actuator units for automatically... | 03/03/1981 |
| 4234157 | Lift-turn valve and actuator assembly A lift-turn valve and actuator mechanism incorporating a valve plug and slip assembly that is movable with both axial and rotatable components of movement during opening and closing. Rotational movement is accomplished during lifting by cooperative relati... | 11/18/1980 |
| 4192482 | Hydraulic actuator to provide both rotary and linear motions to a movable valve A hydraulic cylinder is provided with pistons to provide both rotary and a linear motions; utilization of a built in check valve traps fluid pressure to sustain piston in a desired operating position.... | 03/11/1980 |
| 4120479 | Rising stem valve actuator Valve actuator for causing both rotation of a valve member and linear movement of said valve member.... | 10/17/1978 |
| 4106748 | Valve with two valve plates A valve with a pair of valve plates includes a valve-plate actuating mechanism operably connected between the valve plates and a valve shaft for transforming the movement of the valve shaft to the movement of the valve plates such that the latter are pivo... | 08/15/1978 |
