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| Number | Title | Issue Date |
| 7325574 | Rupture disc assembly for pneumatic plugs A rupture disc assembly for pneumatic plugs constructed and arranged to cooperate with an aperture in an end casting of the plug to expel excess air from the plug interior when a predetermined internal plug pressure is reached. The rupture disc assembly utilizes a r... | 02/05/2008 |
| 7238896 | Switch device A switch device is provided that includes a first switch portion in which an upper electrode and lower electrodes face each other at a predetermined gap and a second switch portion having metal domes which are disposed at a lower side facing the first switch portion... | 07/03/2007 |
| 7204265 | Bursting insert The present invention relates to a bursting insert for installation in a pipeline system for transporting a fluid showing a spontaneous exothermic reaction. The bursting insert comprises a wall which surrounds—at least in part on the outside—a passage volume hav... | 04/17/2007 |
| 6924733 | Hose separation transmitter system and methods A hose separation transmitter system includes a shock sensor and a transmitter that are secured to the delivery hose. If the hose becomes disconnected, the shock sensor will generate a shock signal when the hose falls to the ground and the transmitter will respond t... | 08/02/2005 |
| 6446654 | Pressure relief device for a sealed system A pressure relief device for a sealed system is provided. The device includes a negative pressure support that is engageable with the system. A seal is disposed between the support and the system such that a negative pressure differential created in the s... | 09/10/2002 |
| 6431196 | Combination pressure relief device A pressure relief device with a permanently attached rupture disk is disclosed. The pressure relief device includes a valve body. The valve body includes an inlet and an outlet defining a flow passage therebetween. A valve mechanism is housed in the valve... | 08/13/2002 |
| 6422420 | Compressed gas safety inflator for life vests, life rafts and the like A gas cartridge introduced into the housing of the invention is punctured by a pin moved by an arm designed to show through a series of windows whether the cartridge is full or empty. A pulling on a tab rotates the arm to action, in puncturing the cartrid... | 07/23/2002 |
| 6412512 | Pressure control valve The invention relates to a pressure control valve 1 for a tank intended to contain a fluid and comprising at least one flap 5 obturating an aperture linking the inside (I) and the outside (E) of the tank, such flap being held in the obturating position by... | 07/02/2002 |
| 6321771 | Pressure relief device for a sealed system A pressure relief device for a sealed system is provided. The device includes a negative pressure support that is engageable with the system. A seal is disposed between the support and the system such that a negative pressure differential created in the s... | 11/27/2001 |
| 6213148 | Valve lock and adapter A valve lock for locking a valve spindle in a selected position corresponding to the valve being for example fully open or fully closed. The lock has a housing which is mounted on the valve body and a hub which engages and rotates with the valve spindle r... | 04/10/2001 |
| 5934307 | Overpressure protector The invention relates to an overpressure protector comprising a body portion (1) of single crystal silicon, a burst flow conduit (2) extending through the body portion (1), and a membrane (3) covering the burst flow conduit (2) and responding to a pressur... | 08/10/1999 |
| 5927316 | Safety cut-off system A system for transferring a product from a source which includes a safety cut-off feature for preventing the transfer of the product. The system includes a tubular member adapted to handle the transfer of the product therethrough, a remote connector, a pr... | 07/27/1999 |
| 5775358 | Indicator for compressed gas cartridge Disclosed is an indicator system for use with inflating devices that use a cylinder of compressed gas. The indicator system is comprised of a cylinder adapter which receives and supports a cylinder and, concurrently, is received by an inflating device. Th... | 07/07/1998 |
| 5755249 | Fluid flow monitor A fluid flow monitor has coaxial conductive annular supports separated by an insulating gasket and connected by a conductive member. One support has a lesser external diameter and a smaller internal diameter than the other to reduce the chance of accident... | 05/26/1998 |
| 5694117 | Alarm system for rising stem valves An alarm system for a particular type of lifting seal type valve, such as those employed in pressure relief. The alarm system consists of a signal source, an alarm mechanism and a signal carrying conductor secured to a seated lifting seal valve in such a ... | 12/02/1997 |
| 5643030 | Gas cartridge safety inflator apparatus A gas cartridge introduced into the housing of the invention is punctured by a pin moved by an arm designed to show through a window whether the cartridge is full or empty. A pulling on a tab rotates the arm to action, in puncturing the cartridge and a sp... | 07/01/1997 |
| 5640990 | Flexible conduit failure safety valve A safety valve for precluding leakage of a fluid from a ruptured conduit. The inventive device includes a sensing conduit having a center bore and a matrix of bores concentrically positioned about the center bore. A valve is positioned in fluid communicat... | 06/24/1997 |
| 5631634 | Flow and pressure sensor A pressure sensor assembly includes a disk entirely of metal and having a plurality of circumferentially spaced petals, separated by a plurality of radially extending slots. The slots extend from the periphery of the disk to a position near the center. Ho... | 05/20/1997 |
| 5601109 | Fluid flow monitor A fluid flow monitor has coaxial conductive annular supports separated by an insulating gasket and connected by a conductive member. One support has a lesser external diameter and a smaller internal diameter than the other to reduce the chance of accident... | 02/11/1997 |
| 5583490 | Rupture disk monitoring apparatus A monitoring apparatus for monitoring the condition of a pressure relief rupture disk disposed in a pressure relief conduit is disclosed. The monitoring apparatus includes an electrically conductive rupture disk circuit, spaced apart electrodes affixed to... | 12/10/1996 |
| 5155471 | Low pressure burst disk sensor with weakened conductive strips An ultra low pressure flow sensor consisting of a support gasket defining a flow way and having a thin, pliable membrane extending thereacross with right angle slits formed totally across the flow way portion. An electrical conductor strip is then bonded ... | 10/13/1992 |
| 5121766 | System for control of oil leakage from damaged tanker Outflow of oil from a damaged tanker having some tanks dedicated for carriage of oil and others for sea water ballast is minimized by transferring oil out of the upper part of any damaged tank to one or more empty ballast tanks. This is accomplished by in... | 06/16/1992 |
| 4978947 | Rupturable fluid flow indicator A rupturable fluid flow indicator and a rupture disk assembly including the indicator are provided. The indicator is comprised of a rupturable member adapted to be clamped across a fluid flow passageway having at least one opening formed therein for weake... | 12/18/1990 |
| 4951697 | Rupture disk failure indicating apparatus The present invention provides apparatus for visually indicating the failure of a rupture disc comprised of an elongated hollow body member, a piston disposed in the body member which is moved therein by pressurized fluid pressure exerted thereon, and an ... | 08/28/1990 |
| 4579001 | Pressure relief valve with pressure indicating means A conventional rupturable curved disc in a pressure relief valve for high pressure cylinders serves as one plate of a capacitor. A curved segmented disc, alterable in curvature in response to deformation of the adjacently located curved disc, serves as th... | 04/01/1986 |
| 4562741 | Pressure relief valve with pressure indicating means A conventional rupturable curved disc in a pressure relief valve for high pressure cylinders serves as one plate of a capacitor. A curved segmented disc, alterable in curvature in response to deformation of the adjacently located curved disc, serves as th... | 01/07/1986 |
| 4408194 | Capacitive pressure relief rupture disc monitor A capacitive pressure relief rupture disc monitor for use in detecting the rupture of an electrically conductive rupture disc installed in a pressure relief vent includes a flat metal loop positioned in spaced relation to the rupture disc and forming a ca... | 10/04/1983 |
| 4372334 | Overpressure relief control system A control system for an overpressure relief arrangement includes a valve providing selective communication between a pressure passage connected to a pressure vessel and a pair of relief passages, each relief passage having an overpressure relief device th... | 02/08/1983 |
| 4352437 | Combined pressure relief and indicator mechanism A combined pressure relief and pressure indicating mechanism includes a diaphragm closing a vent in a housing. The diaphragm is punctured if an excessive overpressure occurs in the housing to relieve same. A movable indicator is held from moving by the di... | 10/05/1982 |
| 4342988 | Rupture disc alarm system A monitor system for sensing the failure of a rupture disc and activating an alarm in response to such a failure. The system also senses potential failure of a rupture disc. The system includes a failsafe signal carrying loop which is broken when the rupt... | 08/03/1982 |
| 4326589 | Anti-freeze arrangement for sprinkler systems An antifreeze arrangement especially for automatic sprinkler systems comprising a frangible membrane, secured to a bellows interposed in the water supply pipe to the sprinkler system, antifreeze solution downstream of the membrane with water upstream ther... | 04/27/1982 |
| 4263929 | Electropneumatic pressure relief indicator A pressure relief indicator including a housing connected in fluid communication with a fluid system to be relieved, a pair of rupturable diaphragms extending in closing relation across the housing and combining to define a closed chamber, the diaphragm a... | 04/28/1981 |
| 4232698 | Pressure relief valve with pressure indicating means An adjustably positionable element having a curved end plate is located in proximity to the conventional rupturable curved disc in a pressure relief valve for high pressure cylinders. The end plate serves as one plate of a capacitor and the curved disc se... | 11/11/1980 |
