Abstract: A pressure sensor chip that includes a sensor diaphragm; and a first holding member and a second holding member bonded respectively to first surface and the second surface of the sensor diaphragm with peripheral portions thereof being positioned to face each other, each of the first holding member and the second holding member has a pressure introduction hole, the first holding member includes a non-bonding region formed inside the first holding member and communicating with a periphery of the pressure introduction hole, first and second grooves each has an annular shape formed in a peripheral edge portion of the non-bonding region, an end of the second groove is positioned closer to the pressure introduction hole than an end of the first groove, and the second holding member includes a recess.

Abstract: Method of determining the presence of incondensable gases in a climate station cylinder for recharging motor vehicle air conditioning systems. One of the pressure sensors will be used that is present in the charging station and designed for monitoring the operations in the A/C system of the vehicle, placed on the low pressure LP and/or high pressure HP lines of the climate station, so that in case of verification of the incondensable gases, the control electronics opens a coolant charging valve and an HP/LP separating valve, thereby flooding the service pipes so as to receive the pressure signal from one of the service pressure sensors, LP or HP, of the station, and compare the value with the temperature T of the cylinder and check whether such pair of values is a corresponding parameter, without tolerances, of a pressure-temperature curve of the pure coolant.

Abstract: A dye-based, multilayer time-indicating label without initial gray time comprises a multilayer first part and a multilayer second part. The first part comprises a topsheet in contact with an enhancement layer and an optional reference layer, and the enhancement layer is in contact with a timing layer. The second part comprises a dye layer, an optional dark layer, and a substrate layer. The timing layer and the dye layer are separate from one another, and are optionally protected by one or more release liners. To activate the indicator, the timing and dye layers are separated from the one or more release liners and then joined to one another.

Abstract: Systems, methods, and apparatuses provided herein relate to a controller for determining a pressure differential across a fluid filter by receiving inlet pressure data regarding a pressure of the fluid upstream of the filtering element, receiving outlet pressure data regarding a pressure of the fluid downstream of the filtering element, receiving engine speed data regarding a speed of the engine, receiving temperature data regarding a temperature of the fluid, and determining a pressure drop across the filtering element based on the inlet pressure data, the outlet pressure data, the engine speed data, and the temperature data.

Abstract: A work vehicle includes a vehicular body, a work implement, an angle sensor, and a work implement control unit. A bucket is rotatable with respect to an arm around a bucket axis in parallel to an arm axis and a tilt axis orthogonal to a bucket axis. The angle sensor is provided in the bucket and detects an angle of inclination of the bucket with respect to a horizontal plane. The work implement control unit starts control of the work implement in which an operation of the work implement is controlled at least partially automatically when an angle of inclination of the bucket detected by the angle sensor is smaller than a first threshold value, and does not start control of the work implement when an angle of inclination of the bucket detected by the angle sensor is equal to or greater than the first threshold value.

Abstract: A method for determining wire connections in a vapor compression system (1) is disclosed. The vapor compression system comprises a compressor, a condenser, an expansion device (2) and an evaporator (3) being fluidly interconnected in a refrigerant path, and two or more sensor devices (7, 8, 9, 10, 11) arranged for measuring variables which are relevant for the operation of the vapor compression system (1). The method comprises the steps of changing an operational setting, e.g. an opening degree of the expansion device (2) for the vapor compression system (1), monitoring variable values, such as temperatures, being measured by at least two sensor devices (7, 8, 9, 10, 11), e.g.

Abstract: A fault indicator for indicating the occurrence of a rapid pressure surge within a housing of an electrical device has: a barrel capable of being mounted in an aperture of the housing; an actuating mechanism having a chamber with at least one orifice communicating between interior and exterior surfaces of the chamber within the housing and an actuating member movable in response to a pressure differential between the interior and exterior surfaces of the chamber; a plunger within the bore of the barrel biased outwardly in the barrel and normally retained in an armed position by the actuating member; and a radial seal disposed between the plunger and the barrel. When the pressure differential exceeds a positive threshold value, the actuating member is moved and thereby permits the plunger to move outwardly into a triggered position. The radial seal may be a dual-lip seal.

Abstract: A signaling device for signaling heating in a mechanical system susceptible to undergo contact heating during operation. The signaling device includes a body containing a thermally triggered charge generating combustion gas, ignition of the charge able to be triggered under the effect of a predetermined heat contribution, from a heating area of the body toward the charge, or under the action of an ignition command, a reservoir containing a fluid, and delivery means delivering pressurized fluid outside the reservoir through the action, directly or through an intermediate member moving in the reservoir, of the combustion gases. The signaling device also comprises at least one visual signaling element for visually signaling combustion of the charge, the visual signaling element being visible at an outer peripheral area of the signaling device after combustion of the charge. The invention also relates to a mechanical system equipped with at least one such signaling device.

Abstract: A display apparatus characterized by having a scale mark display section which is provided in a predetermined display area; a pointer which moves on the scale mark display section and indicates a scale mark in the scale mark display section; a stepping motor which drives the pointer; a stopper section which is positioned in an end section of the scale mark display section and which restricts movement range of the pointer; and a movable supporting section which movably supports the stopper section.

Abstract: Signaling methods and apparatuses are described for preventing flood irrigation water from overflowing in a trench, field, or other area. Signaling devices may include indicators such as a reflector, a flag, a light, or a sound device provided on an end of an elongate member having its opposite end engaged with the ground. A stake is driven into the ground near the elongate member in the trench or other area where water will flow. A breakaway link such as a strip of paper is engaged to either the indicator or the elongate member and also to the stake, causing the elongate member to be bent downward, with the breakaway link located in the trench where water will flow. When exposed to the flow of water, the breakaway link weakens and eventually tears such that the elongate member springs upward carrying the indicator with it, signaling an operator that water has reached that location in the trench.

Abstract: A signaling device for signaling heating in a mechanical system susceptible to undergo contact heating during operation. The signaling device includes a body containing a thermally triggered charge generating combustion gas, ignition of the charge able to be triggered under the effect of a predetermined heat contribution, from a heating area of the body toward the charge, or under the action of an ignition command, a reservoir containing a fluid, and delivery means delivering pressurized fluid outside the reservoir through the action, directly or through an intermediate member moving in the reservoir, of the combustion gases. The signaling device also comprises at least one visual signaling element for visually signaling combustion of the charge, the visual signaling element being visible at an outer peripheral area of the signaling device after combustion of the charge. The invention also relates to a mechanical system equipped with at least one such signaling device.

Abstract: A process transmitter includes a temperature responsive indicator to indicate an operating condition of the process transmitter. The operating condition may represent a level of a sensed process variable or an operating temperature of the process transmitter.

Abstract: The invention provides microstructured time dependent indicators including timers, time/temperature indicators, etc. The indicators are preferably highly accurate and easy to read. The invention also includes indicators which are game pieces, calendars, greeting cards, etc. The indicators function by flow of a material through channels of a microstructured substrate.

Abstract: This invention relates to an improved structure for the vehicular temperature, pressure and vacuum meters with characteristics on that the hand rod is an integrally formed design joined to the dial plate and Bourdon tube without using any bolts or screws, so it is convenient for fast assembly. The Bourdon tube and the hand rod are designed to be suitable for application of any size of the dial plate, so the Bourdon tube, the hand rod and the dial plate can be manufactured and assembled in mass production and tested beforehand to assure the required sensitivity and accuracy as long as the retaining recess on the dial plate can be fitted and locked firmly in place with the retaining protruding point on the meter housing.

Abstract: A temperature-time-pressure detecting device for a closed heat treatment zone consists of a sealed discoidal-shaped capsule of substantially transparent material adapted for placement within the zone in a generally vertical position. The capsule is formed of two opposed preferably symmetrical circular shell walls sealed around their common rim and defining therebetween a central core region containing a shaped mass of a fusible indicating material having a defined melting point at least as high as the temperature to be detected. The central core region is surrounded by an inner and an outer annular chamber which are concentric with the core region and with one another.

Abstract: A novel dosimeter capsule for indicating the condition of the solid propellant contained within a rocket motor to provide a measure of the remaining service life of the motor is described, which comprises a sealed expandable container and a portion of the solid propellant sealed therein and sized to fill the available volume within the container, the propellant portion containing a smaller concentration of chemical stabilizer than that which characterizes the solid propellant contained in the rocket motor, so that the propellant portion will deteriorate at a predictably faster rate than the rocket motor propellant, resulting in an increase of pressure within the expandable container of evolved gaseous products of the decomposition of the propellant portion and an accompanying bulge or protrusion of the container from its receptacle on the rocket motor casing corresponding to the increased internal pressure.

Abstract: A method of operating an expandable chamber formed with a valve opening in a wall of the chamber, which permits the surrounding environment, such as high temperature steam, to enter the chamber is used. A temperature responsive delay valve closes the chamber to capture a quantity of the steam in an autoclave sterilizing cycle. The closing of the valve is delayed until the high temperature steam has been applied for a predetermined time. A later reduction in pressure surrounding the chamber causes the chamber to expand, which provides an indication that an adequate sterilizing cycle has been provided. The expansion force may also be used to permit a container to close at the end of a sterilizing cycle.

Abstract: A temperature compensating device is disclosed for use in a filter contaminant warning system in a tractor or similar machine. The temperature compensating device is hydraulically connected between the hydraulic filter element inlet and the pressure responsive filter contaminant indicator switch in the warning system. Pressurized fluid from the inlet side of the filter element enters the temperature compensating device through an elongated capillary, and the fluid is discharged simultaneously through a port to the filter contaminant indicator switch and through an orifice to a reservoir. When the fluid is cold and has high viscosity, a substantial part of the total fluid pressure drop between the filter inlet and indicator switch occurs in the capillary portion of the compensating device. The remaining portion of the pressure loss occurs in the orifice.

Abstract: A magnetic differential pressure indicator is provided for detecting and indicating a pressure differential thereacross that is greater than a predetermined value in a fluid system. A thermal lockout effective even at high internal fluid pressures prevents false actuation of the magnetic indicating means at low temperatures due to increased viscosity of the system fluid.