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| Number | Title | Issue Date |
| 7365277 | Buffer assembly for a pressure sensitive switch A buffer assembly includes a housing adapted to sealingly connected to the pressure switch and defining therein a chamber and an airway defined in a bottom face of the housing to communicate with an interior of the housing so as to communicate with an inlet of the p... | 04/29/2008 |
| 7256361 | Pressure switch A pressure switch includes a body, a lower cap and an upper cap respectively mounted to two opposite ends of the body. A casing is airtightly sleeved on an outer periphery of each of the lower cap and the upper cap. There are two electrodes disposed in the body and ... | 08/14/2007 |
| 7174778 | Control device for a motor vehicle Control device for a motor vehicle, particularly for controlling a gearbox, with an electronic control circuit arranged on a support plate in a housing; for measurement of the hydraulic pressure, a measuring transducer is connected to a hydraulic unit of the gearbox... | 02/13/2007 |
| 7168305 | Method of securing tire pressure monitoring device to wheel A method of securing a tire pressure-monitoring device to a vehicle wheel includes the steps of welding a bracket within a tire wheel well. The bracket assembly includes a weld surface that corresponds to a surface on the wheel rim. The weld surface includes a commo... | 01/30/2007 |
| 7019629 | Tire pressure indicator A tire pressure indicator is disclosed including a housing having an inlet for air under pressure, a sealed chamber, the chamber containing a gas under pressure, a signaling device having an electrical power source arranged to generate an electrical signal indicativ... | 03/28/2006 |
| 6962084 | Sensor with molded sensor diaphragm cover A diaphragm cover apparatus and method for a sensor are disclosed. A sensor cover is located proximate to a base. A dimple can be located centrally within the cover, wherein the dimple comprises a component that is separate from the sensor cover and diaphragm. The d... | 11/08/2005 |
| 6935169 | Tire pressure sensor array A tire pressure sensor array includes a control module to which a receiver is connected. Four tire pressure sensors communicate with the control module via the receiver. Each tire pressure sensor includes a pressure switch that is electrically connected to a digital... | 08/30/2005 |
| 6639165 | Multiple contact fluid pressure switch A multiple contact fluid pressure switch includes a plate from which a rib extends to establish a cavity on the plate. Two lower contacts are on the plate within the cavity. A diaphragm is disposed on the rib to enclose the cavity. Further, an upper conta... | 10/28/2003 |
| 6525286 | Triple action pressure switch A triple action pressure switch includes a first inversion plate, a first sliding member including an annular protrusion to the lower surface thereof, a second inversion plate with the upper surface thereof abutting against the annular protrusion, a secon... | 02/25/2003 |
| 5818002 | Pressure change warning switch A pressure switch is illustrated that includes only three piece parts--two dimpled covers and a spacer. By selecting both the type and thickness of cover materials, switching pressure ranges can be selected to accommodate a very wide range of operating pr... | 10/06/1998 |
| 5815079 | Device for establishing and/or monitoring a predetermined filling level in a container A description is given of a sturdy device for establishing and/or monitoring a predetermined filling level in a container, which device exhibits a housing (1), two oscillating rods (3, 4) projecting into the container, a first diaphragm (2) which is fixed... | 09/29/1998 |
| 5688244 | Apparatus for monitoring infusion An apparatus for infusion monitoring including a pressure transmission line branched from the infusion hose and a diaphragm connected with the infusion hose, the diaphragm being able to be connected with a pressure sensor for registering a change in curva... | 11/18/1997 |
| 5635691 | Pneumatic pressure sensor switch device for a vehicle tire A pneumatic sensor switch for giving a warning signal if a pneumatic vehicle tire has too low pressure has a gas-filled chamber, separated from the inflation space in the tire by a flexible diaphragm cooperating electrically with a metal part in the chamb... | 06/03/1997 |
| 5496062 | Liquid-fueled device to combine the functions of a low pressure switch (LPS), squib, and gas generator Featured for use with a hybrid air bag inflator containing inert stored gas under high pressure is a liquid fueled construction which combines the functions of an initiator, gas generator, and differential low pressure switch into a single device. Instead... | 03/05/1996 |
| 5429387 | Low pressure switch/initiator/gas generator A single device acts as a pressure switch, gas generated heater, and an igniter. The device has pyrotechnic material such as a combustible gas in an inner chamber. An outer chamber, that is, a chamber in which the device is positioned, includes a gas that... | 07/04/1995 |
| 5225643 | Differential pressure switch for stored gas pressure vessel Two electrically conductive diaphragms which are disposed in generally parallel relation and are symmetrical mirror images of each other are joined to a non-conductive ring. The diaphragms are joined in a pressurized atmosphere of argon at, for example, 3... | 07/06/1993 |
| 5140113 | Differential pressure control switch with a pivoting actuating lever and a biasing spring sealed in a housing A differential pressure control provides a housing having a pair of opposing inlets for accepting lines having different fluid pressures therein. The inlets are sealably connected to a central chamber having a piston by means of diaphragms. The piston is ... | 08/18/1992 |
| 5132500 | Differential pressure switch with sealed contacts A differential pressure switch has a main switch body divided into three chambers by means of two diaphragms, thereby sealing the center chamber that contains a snap-action switch. The two diaphragms are mechanically connected by a strut that can move onl... | 07/21/1992 |
| 5122628 | Sudden pressure rise detector Apparatus for detecting a sudden rise in pressure of a source thereof is disclosed which is especially useful for activating explosion suppression or isolation equipment by virtue of the fact that the apparatus is capable of detecting a sudden, incipient ... | 06/16/1992 |
| 5015808 | Normally open pressure switch A normally open pressure responsive switch having upper and lower housings with a snap acting member and an electrically conductive member sandwiched therebetween. The housings each include a body with a hollow center portion and the lower housing has a c... | 05/14/1991 |
| 5001317 | Fluid activated switch apparatus A pneumatic switch unit includes a switch housing. A conductive contact spring is mounted between diametric supports, one being adjustable. The spring has a central actuator arm and an offset contact arm interconnected to an encircling frame. A two piece ... | 03/19/1991 |
| 4954677 | Tire pressure sensor for motor vehicles A tire pressure sensor to be fastened to a rim of a vehicle wheel for sensing an inflation pressure of a tire mounted on the rim, the tire pressure sensor comprising a reference pressure chamber having a gas filled reference pressure volume, an electrical... | 09/04/1990 |
| 4867645 | Double diaphragm pressure switch for a well water system A switch mechanism for controlling a motor that runs a well pump. Water line pressure acts on a diaphragm to pressurize an air chamber that communicates with a pressure switch. The switch components are isolated from the water line (by the air chamber), t... | 09/19/1989 |
| 4743716 | Pressure sensor A pressure sensor adapted for use in pressure switches, pressure detectors, pressure measuring instruments, etc. has a housing. The housing has at one end a force balance valve including a gas chamber sealed at one end by a valve diaphragm and filled with... | 05/10/1988 |
| 4692574 | Differential pressure responsive switch A differential pressure responsive switch utilizes an operating diaphragm which has a position controlled by a pressure being monitored with the diaphragm acting through a transmission member upon an electrical switch and includes a first chamber divided ... | 09/08/1987 |
| 4587903 | Tripping system for electrical percussion fuses An ignition system for projectiles, such as shells, bombs, or rockets is disclosed. The system has a pressure chamber defined by a double-diaphragm switch and a cap of a deformable material. The diaphragm of the double-diaphragm switch, which defines one ... | 05/13/1986 |
| 4503301 | Differential fluid pressure switch A fluid pressure switch includes a housing with a cylindrical bore, a spring housing bore and a guide bore between the cylindrical bore and the spring housing bore. A shaft member axially disposed in the housing between the bore, has a piston element secu... | 03/05/1985 |
| 4469923 | Pressure responsive switch with discrete pressure responsive unit A relatively low cost, high performance pressure responsive switch device comprises a base, switch means mounted on the base, and a discrete pressure-responsive unit which is separately testable for predetermining its pressure response characteristics and... | 09/04/1984 |
| 4433219 | Differential pressure switch with square diaphragm plate supported by the diaphragm A miniaturized differential pressure switch comprising a pair of matched square housing sections with a square diaphragm supporting a flat square diaphragm plate which bears against a compression spring that is flexed to open an electrical contact in depe... | 02/21/1984 |
| 4355761 | Pressure sensor and regulator for airless material coating system An airless paint or material spray system having a pressure sensor and regulator for controlling the pressure of paint flowing from a paint pump to an airless spray gun. The pressure sensor and regulator includes three contiguous flexing diaphragms in a m... | 10/26/1982 |
| 4277227 | Apparatus for converting a pump to a controller Apparatus is provided for assuring that fluid is introduced from a pump to a receiver, such as a patient, at a controlled and safe pressure. This arrangement includes conduit means, such as inlet and outlet lines, which extend from the pump to the receive... | 07/07/1981 |
| 4267413 | Temperature compensated pressure control A temperature compensated pressure control device comprising switch means for supplying pressure to a pressurized zone to maintain a predetermined pressure therein, a first diaphragm responsive to depletion of the pressure in said pressurized zone to effe... | 05/12/1981 |
| 4190752 | Vacuum actuated switch A vacuum actuated switch has a pair of snap action contacts which are actuated in response to the operation of two vacuum motors. One vacuum motor controls the opening and closing of the contacts in a first predetermined range of vacuum. The other vacuum ... | 02/26/1980 |
| 4163129 | Condition responsive control switch units A control switch unit adaptable for a number of different purposes has a fluid-filled flexible-walled capsule acting within a housing on a pivoted operating lever arranged to operate a switch located in the housing on the other side of the pivot axis of t... | 07/31/1979 |
| 4101747 | Differential pressure operated switch A pressure responsive control device including a housing, a control switch unit and switch operating actuator, and a controller unit is disclosed for controlling operation of a refrigeration defrosting device. The actuator includes a bladder formed of thi... | 07/18/1978 |
| 4084084 | Bubbler and automatic light An illuminating device having an L-shaped housing with a light source at each end, a diaphragm actuated switch for each light source, an air line in fluid communication with each leg of the housing, and a tube interconnecting the housing legs for permitti... | 04/11/1978 |
| 4081636 | Differential pressure cutout switch A differential pressure cutout switch including a low pressure operating point assembly and a high pressure operating point assembly which are mechanically linked and are operable to respond to first and second pressures supplied over respective first and... | 03/28/1978 |
| 4063057 | Temperature compensated pressure differential sensing devices, including improved press-to-test and glass header switch mounting A pressure differential sensing device comprises a sealed housing having mounted therein a gas-filled flexible capsule and a switch operated by expansion of the capsule. The pressure differential sensing device is mounted to a pressurized chamber with the... | 12/13/1977 |
| 4053725 | Pressure switch for outdoor refrigeration systems A pressure switch for use in refrigeration systems which includes a restrictor to minimize the effect of compressor pulsations on the pressure sensing element and a heater positioned to warm the interior of the switch housing and to maintain the fluidity ... | 10/11/1977 |
| 3985986 | Differential pressure warning switch A differential pressure warning switch comprising a housing defining a chamber, hydraulic conduits communicating the master cylinder and front and rear fluid brake actuators of an associated vehicular brake system with the chamber, a shuttle piston movabl... | 10/12/1976 |
