Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7363967 | Downhole tool with navigation system A downhole tool for use in a well bore comprises an onboard navigation system for determining the location of the tool within the well bore, wherein the tool is moved along at least a partial length of the well bore via an external force. A method of locating a down... | 04/29/2008 |
| 7347423 | Arrangement in connection with mechanical seal An arrangement in connection with a mechanical seal includes at least two sliding surfaces pressing against each other, which are arranged to seal a gap between a rotating and a non-rotating machining part, and mechanism for providing a sealing fluid flow cooling th... | 03/25/2008 |
| 7337799 | Gaseous fuel vehicle and automatic vent system A vehicle (1) equipped with a tank (2) for storage of a fluid under pressure on the vehicle, the tank being connected to at least one vent channel (3 and 33), the vent channel leading to a discharge orifice (34), the vent channel b... | 03/04/2008 |
| 7328748 | Thermal actuated plunger A downhole plunger for a gas/oil well comprises a valve to regulate fluid flow past the plunger and a thermal actuator to control the valve. The thermal actuator of the disclosed device enables the valve to open and close aperatures without relying on the physical i... | 02/12/2008 |
| 7182171 | Muffler with variable acoustic properties A muffler with variable acoustic properties. A pressure cell with a diaphragm, a spring, a piston, a piston rod, a closing element on the piston rod, and a pressure connection line are integrated into a housing. The diaphragm is thermally insulated against the pisto... | 02/27/2007 |
| 7178548 | Dry safety device for an inflammable gas A dry safety device for an inflammable gas comprises a case main body having a gas passage which terminates at one end in a primary side open port connectable to a source of inflammable gas and terminates at the other end in a secondary side open port connectable to... | 02/20/2007 |
| 7114512 | Gas safety device A gas safety valve includes a main body having a longitudinal through-hole consisting of a first section, a second section, and a third section with different inner diameters. A ball and a restraining member are mounted in the first section. A spring is mounted in t... | 10/03/2006 |
| 7017599 | Thermal relief vent and method of manufacturing the same An improved thermal relief vent for a fuel tank, and a method of manufacturing the same, includes a thermal relief ring that is used to create a mechanical seal within the vent. The thermal relief ring, at room temperature, is crimped in place by use of the vent cap... | 03/28/2006 |
| 6911183 | Moving microdroplets The movement and mixing of microdroplets through microchannels is described employing microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. The discrete droplets are differentially heated ... | 06/28/2005 |
| 6820633 | Thermally-sensitive safety device for gas tubing The present invention is to provide a thermally-sensitive safety device for gas tubing including a main body provided with an inlet, an outlet and a gas passage communicated with said inlet and said outlet, and a thermally-sensitive control valve mounted in the gas ... | 11/23/2004 |
| 6688323 | Gas tank to pressure regulator coupling A coupling for connecting a cylinder valve on an LPG tank to the inlet of a pressure regulator for gas consuming equipment comprises a nipple having an upstream end for connection with the cylinder valve and a downstream end for connection with the pressu... | 02/10/2004 |
| 6592047 | Delayed action oil filter bypass valve A bypass valve assembly, comprising: (a) a housing 12 having an inlet 16 and an outlet 18; (b) a valve member 20 disposed within the housing and being movable between a closed position and an open position; and (c) a slug of material 30 disposed in an ini... | 07/15/2003 |
| 6341616 | Fire protection fluid relief valve A fluid pressure and heat sensitive valve connected with a flow line includes a collapsible pin, normally maintaining the valve closed, which collapses to open the valve in response to fluid pressure above a predetermined limit and includes a fusible plug... | 01/29/2002 |
| 6321768 | Fluid flow shutdown and pressure relief valve with a fusable element A fluid pressure and heat sensitive flow control valve interposed in a flow line includes a collapsible pin, normally maintaining the valve open, which collapses to close the valve in response to fluid pressure above a predetermined limit and includes a f... | 11/27/2001 |
| 6237630 | HVAC damper A fail-safe HVAC damper apparatus comprises a duct channel with a closure comprising one or more quadri-panel hinged elements, each with four panels connected by four parallel hinge pins. A gear shaft with a toothed gear is controllably rotated to linearl... | 05/29/2001 |
| 5632297 | Piston-type thermally or pressure activated relief device A relief device which activates in response either to excess temperatures or pressures in or around a pressurized vessel and which resists extrusion related failures even at high pressures is provided. The relief device includes a body having an inlet, an... | 05/27/1997 |
| 5540249 | Automatic shutoff valve mechanism The valve in automatic shutoff valve mechanism is held in a predetermined elevated open position by a magnet spaced above the valve, and the valve can be released for downward movement into shutoff position either by melting of a fusible nut holding a thr... | 07/30/1996 |
| 5435333 | Thermally responsive pressure relief apparatus A thermally responsive pressure relief system is provided for a receptacle such as a pressure vessel. A passage communicates the interior of the vessel with the exterior thereof. A closure member is positioned in the passage. A fusible bonding material of... | 07/25/1995 |
| 5325882 | Pressure and thermal relief valve for fuel tank A valve plug is biased inwardly by a spring (90) to close an opening (10) in a cap (2) for a fuel tank filling and venting tube. A valve stem includes a first portion (62) which is engaged by the spring (90) and a second float cage portion (40) that is se... | 07/05/1994 |
| 5269336 | Air ventile for pressure cookers and pressure cookers having the same There is provided a novel dual functioning, dual metal safety release valve for a pressure cooker. This valve comprises a metallic retainer member having a bore therein in which is held a fusible metal alloy. The metallic retainer is held in a suspended m... | 12/14/1993 |
| 5240027 | Combination relief vent and closure apparatus Apparatus which can be installed over an opening on a container and can provide relief of excessive pressure conditions and excessive vacuum conditions in the container and provide rapid temperature actuated pressure relief for the container in the event ... | 08/31/1993 |
| 5213128 | Pressure/temperature-activated pressure relief valve A pressure relief valve, which can be pressure activated or thermally activated, includes a valve housing with an inlet communicating with an interior of a pressure vessel, and a passage from the inlet, through the housing, to an outlet for communicating ... | 05/25/1993 |
| 5118164 | Adaptive braking system default activated proportioning valve The adaptive braking system (10) default activated proportioning valve (80, 80A, 80B) comprises a proportioning valve that is deactivated during normal and adaptive braking system operation. Should the adaptive braking system (10) experience a failure so ... | 06/02/1992 |
| 5048552 | Universal trip valve operators and trip actuating seismic vibration sensors and transducers therefor A trip valve operator for actuating quarter turn valves comprises a return actuator, multi-stage leverage means for reducing the trigger load, a trigger, and one or more sensors or other trip actuators. The multi-stage leverage means comprises pivotally c... | 09/17/1991 |
| 5048554 | Valve for a gas cylinder The valve has an outlet safety channel (20) closed by a burstable diaphragm (26) wedged between the body (10) of the valve and a plug (24) fitted detachably in the body (10) of the valve, the said plug (24) comprising an axial passage (28) in communicatio... | 09/17/1991 |
| 4896690 | Pressure and thermal relief valve In a thermal responsive relief valve, an elongated tubular valve body axially contains a strut secured at one end portion to the bore of the valve body and axially contained at its other end by a piston sealed with the valve body bore at one of its ends. ... | 01/30/1990 |
| 4883225 | Fail-safe thermostat for vehicular cooling systems A fail-safe thermostat for vehicular cooling systems is positioned in a junction leading to an internal coolant passageway, a radiator passageway and a bypass passageway. An open housing seated in the junction supports a fixed central rod extending into t... | 11/28/1989 |
| 4856547 | Pressure relief valve A pressure relief valve, for pressurised fluid storage vessels such as a rail tank car for volatile liquids, has a flap valve for rotational movement in a valve passage between a closed position seated on a valve seat and blocking the passage and an open ... | 08/15/1989 |
| 4800804 | Variable air flow diffuser An air diffuser adapted for mounting in a building for controlling air pressure within a space, the diffuser comprising a tile such as can be placed in a ceiling and having an air inlet side and an air discharge side, a wall providing an air flow port in ... | 01/31/1989 |
| 4745940 | Safety valve with reset A flow controlling valve is provided for disposition within a pipeline or the like which may be subject to excessive vibrations and/or temperature and the valve includes a valve member shiftable between open and closed positions, yieldingly biased to the ... | 05/24/1988 |
| 4744382 | Combination thermal or pressure activated relief valve A combination thermal or pressure activated relief valve is disclosed. The valve includes a housing having an inlet and an outlet formed therein. The inlet is adapted to be attached to a pressure source while the outlet is in communication with an area ha... | 05/17/1988 |
| 4732188 | Fuel tank cap with pressure/thermal relief A valve plug (22, 22a, 22b) is biased inwardly by a spring (78, 78a, 78b) to close an opening (6, 6a, 6b) in a tank. A stem (32, 32a, 32b) extends axially inwardly from the plug (22, 22a, 22b). The stem (32, 32a, 32b) has an inner portion (36, 36a, 36b) w... | 03/22/1988 |
| 4685584 | Vented fuel cap with bump and grade seal A fuel cap for closing the filler neck of an off-road vehicle. The fuel cap includes a cover having an opening therethrough and a concentric housing extending downwardly into the filler neck and connected to the cover. A valve body having an upper and a l... | 08/11/1987 |
| 4669493 | Safety pressure relief A safety relief valve for liquified gas containers has dual pilot valves, one set to a given operating pressure and one adjustable. A main valve is responsive to the pilots, which are connected in parallel. The adjustable pilot is continuously adjustable ... | 06/02/1987 |
| 4516595 | Gas pressure reducing regulator and adapter A diaphragm type gas pressure reducing regulator and adapter in combination in which the adapter serves to isolate the diaphragm from the valve seat in the regulator in response to a spontaneous ignition. The adapter comprises a plunger which intercouples... | 05/14/1985 |
| 4479506 | Conduit blowout preventer The invention provides a conduit blow out preventer utilizing movement of an annular piston to selectively effect the reduction of flow through the blowout preventer to a pre-determinable value or alternately, terminate flow therethrough altogether in res... | 10/30/1984 |
| 4469275 | Thermostatic device with fail-safe capability A device in a fluid flow path moves to perform a fluid flow control operation at a predetermined high fluid temperature. A mechanism normally locked out of participation in the movements of the device is released at a selected fluid temperature higher tha... | 09/04/1984 |
| 4458711 | Vent valve A plastic vent valve apparatus for use in connection with storage containers provides for equalization of the internal pressure of the container. Air is admitted into the container in response to a partial vacuum, while fumes or fluid contents of the cont... | 07/10/1984 |
| 4457325 | Safety and venting cap for vehicle fuel tanks A fuel tank cap (10,130) having a venting valve (56,56A) adapted to relieve pressure and temperature in the tank and prevent spilling fuel from the tank. A cover plate (28,28A) is automatically (34,34A) removed from the cap by excessive temperature so as ... | 07/03/1984 |
| 4457329 | Safety pressure regulator A safety pressure regulator employing a diaphragm actuator that upon exposure to high temperature an element melts to release the valve from the actuator to effect its automatic closing.... | 07/03/1984 |
