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| Number | Title | Issue Date |
| 7146677 | Energy saving vacuum system for particle, mist, and fume collection An improved energy-efficient vacuum system for machine shop dust, particulate matter, and the like. Blast gates, including large-diameter blast gates, control the flow of vacuum generated by a dust collector to individual machines that may or may not accommodate vac... | 12/12/2006 |
| 7114702 | Slide valve In a slide valve, especially for coating installations, for fluidic separation of two modules or chambers, interconnected through an opening, containing at least one slide plate, integrated in a housing transfixed by said opening, and which may be bidirectionally mo... | 10/03/2006 |
| 7040337 | Valve override system A valve override system for allowing a user to restore flow through a gate valve that has failed in the closed position. The valve override system includes an engagement assembly being designed for engaging a gate of the gate valve assembly whereby the engagement as... | 05/09/2006 |
| 7033460 | Coke drum bottom throttling valve and system A coke drum bottom de-heading system having an internal shroud enclosure and a shroud end cap opened by a flange to a coke bottom de-heading valve capable of accepting the end of a gate valve upon actuation. Acting in coordination with the shroud enclosure to preven... | 04/25/2006 |
| 6997041 | Dual slide gate valve and method for using same A method and device for pressure testing a pipe line is provided wherein a fitting is inserted into the pipeline by inserting male ends of the pipeline into female ends of the fitting to define a flow path through the fitting extending along a longitudinal axis. The... | 02/14/2006 |
| 6942194 | Gate valve The invention relates to a gate valve with a housing, having an inlet and an outlet, between which a flow area is arranged, with a sealing insert in the flow area and a sliding element cooperating with a contact area of the sealing insert in the closed state. In a g... | 09/13/2005 |
| 6843889 | Coke drum bottom throttling valve and system A coke drum bottom de-heading system having an internal shroud enclosure and a shroud end cap opened by a flange to a coke bottom de-heading valve capable of accepting the end of a gate valve upon actuation. Acting in coordination with the shroud enclosure to preven... | 01/18/2005 |
| 6688321 | Method and apparatus for a flow regulator having an integral hinge A device for regulating the flow of gas from an environment. The device includes a shell forming a path through which fluid flows. A fixed grate is disposed in the path so that as fluid flows in the path the fixed grate does not move. A movable grate asse... | 02/10/2004 |
| 6564818 | Methods of implementing a single shaft, dual cradle vacuum slot valve A single slot valve shaft is in a vacuum body between adjacent vacuum chambers, such as a process module and a transport module. Separate valves are provided on the single shaft actuator for each of two valve body slots, each body slot being closed or ope... | 05/20/2003 |
| 6041804 | Subsea valve actuator and method A subsea actuator and method is disclosed that includes a removable monolithic cap/hydraulic chamber that seals the actuator housing top with seals placed around the monolithic cap, defines a straight hydraulic line and port for control line hydraulic flu... | 03/28/2000 |
| 5878769 | Maintenance method and maintenance kit for a gate valve The maintenance method is for a gate valve. The method comprises the steps of closing the gate valve; removing sequentially the hand wheel, the gland flange, the gland and the packing from the stem of the gate valve; mounting a first clamp onto the gate v... | 03/09/1999 |
| 5836336 | Cut-off diaphragm gate valve A cut-off diaphragm gate valve has two members (1) of the shape of a quadrangle located opposite to each other as in mirror reflection. Passage openings (4) are disposed in the four corners of each of the members (1). Control screws (5) furnished with nut... | 11/17/1998 |
| 5732728 | Valve insertion method and assembly for inserting a valve in a line A method for inserting a valve in a line includes providing a valve body that assembles on and rotates about an existing pipe. A first sealing mechanism is provided on the valve body that enables a user to selectively open (unseal) and close (seal) a gate... | 03/31/1998 |
| 5524663 | Vacuum tube shut-off for power tools The present invention provides a vacuum tube shut-off 10 for shutting off vacuum air flow between coating removal power tools 36 and a vacuum source 34. The vacuum tube shut-off 10 includes a vacuum tube 12 in vacuum air flow communication with the power ... | 06/11/1996 |
| 5381815 | Method for isolating a relief valve A method for isolating a relief valve, the relief valve being positioned in fluid communication with a pressurized vessel by positioning a gate valve body between and in fluid communication with the relief valve and the pressurized vessel, the gate valve ... | 01/17/1995 |
| 5279320 | Gate valve A gate valve comprises a valve body (1) and a gate displaceably arranged inside said valve body transverse to the flow direction, said gate being provided on each side with a guide groove (14) guided by means of a mating guide rail formed on each side of ... | 01/18/1994 |
| 5074526 | In-line fluid flow control valve with apparatus for and method of installation in an existing fluid conduit The present invention provides an in-line fluid flow control valve adapted and designed for installation in an existing fluid line carrying fluid under pressure, without the necessity of interrupting flow of fluid through such line, and further provides a... | 12/24/1991 |
| 5030039 | Apparatus and method for installing a thermometer-receiving well within a fluid service pipe Apparatus and method for installing a thermometer-receiving well within a fluid service pipe without interrupting the service in the pipe. A rod member is provided which defines a first end for removably receiving a cutting member for cutting through the ... | 07/09/1991 |