208 results about "Stress indicator" patented technology

A wound dressing apparatus includes a wound dressing member dimensioned for positioning relative to a wound bed. The wound dressing member including an internal vacuum reservoir and has a port in communication with the vacuum reservoir for applying subatmospheric pressure to the vacuum reservoir to facilitate removal of fluid from the wound bed. The wound dressing member includes a visual pressure indicator associated therewith for indicating a level of pressure within the vacuum reservoir. The visual pressure indicator includes color indicia having a plurality of colors corresponding to a condition of the pressure within the vacuum reservoir. The wound dressing member includes a lower absorbent member positionable adjacent the wound bed and an upper member which at least partially defines the vacuum reservoir. At least one of the top member and the lower absorbent member has the visual pressure indicator mounted thereto. The preferred visual pressure indicator includes an electronic position sensor. The visual pressure indicator further includes circuit means and visible alarm means. The circuit means is adapted to actuate the visible alarm means when the position sensor detects a relative positioning of the top member of the wound dressing member to provide a visual indication of the condition of the subatmospheric pressure within the vacuum reservoir.

A mechanism to monitor an individual's level of stress in his or her home or workplace is provided. Unobtrusive physiologic stress senses are used in combination with a wireless link and a personal computer or other intelligent device to monitor the user's stress level. Based on a user profile and the user's baseline stress indicators, one or more stress-reducing activities are presented to the user. Additionally, if a user is in a stress-sensitive population, for example, persons with a pre-existing hypertension, the user may selectively enable additional alerts.

A percussive massage device includes an enclosure having a cylindrical bore that extends along a longitudinal axis. A motor has a rotatable shaft that rotates about a central axis perpendicular to the longitudinal axis. A crank coupled to the shaft includes a pivot, which is offset from the central axis of the shaft. A reciprocation linkage has a first end coupled to the pivot of the crank. A piston has a first end coupled to a second end of the reciprocation linkage. The piston is constrained to move within a cylinder along the longitudinal axis of the cylindrical bore. An applicator head has a first end coupled to a second end of the piston and has a second end exposed outside the cylindrical bore for application to a person receiving treatment. A motor controller measures current applied to the motor and displays a pressure indicator responsive to the measured current.

In one embodiment, an apparatus includes a probe configured to be percutaneously deployed within an interior portion of a bone structure. At least a portion of the probe is configured to contact a portion of the interior portion of the bone structure when the probe is actuated within the interior portion of the bone structure. The apparatus also includes a pressure indicator that is configured to provide pressure data associated with a pressure externally exerted on the probe when the probe is actuated within the interior portion of the bone structure. In some embodiments, the probe includes an expandable member. In some embodiments, the probe includes an expandable low-compliance balloon.

Methods and systems for reverse-circulation cementing in subterranean formations are provided. An example of a method is a method of cementing casing in a subterranean well bore, comprising inserting a casing into the well bore, the casing comprising a casing shoe; equipping the casing with a well head, and a casing inner diameter pressure indicator; flowing an equilibrium fluid into the well bore; flowing a cement composition into the well bore after the equilibrium fluid; determining from the well-bore pressure indicator when the well bore pressure has reached a desired value; discontinuing the flow of cement composition into the well bore upon determining that the well bore pressure has reached a desired value; and permitting the cement composition to set in the subterranean formation. Examples of systems include systems for cementing casing in a well bore.

A pressure indicator for positive pressure protection masks, including powered air purifying respirators (PAPRs) that monitors and determines relative air pressure between the internal space of a protection mask and the ambient environment to alert users of negative or threshold level air pressure, and in turn, to ensure safe operation of the protection masks. The pressure indicator, which is incorporated in the mask, alerts users when the air pressure in the mask reaches a critical level by transmitting optical signals, auditory signals, vibrational signals or a combination thereof that are detectable by the user. The optical signals are projected into the user's line of vision either directly or through a head-up display. The pressure indicator may cause the signal to indicate a safe and danger mode, or may cause the signal to indicate only during a danger mode.

The invention discloses a testing device and a testing method for a three-dimensional PIV (Particle Image Velocimetry) internal flow field testing system of a hydraulic retarder. The testing device comprises a driving motor, a transmission case, a pneumatic clutch, a flywheel case, a torsion and rotating speed sensor, a braking shaft, a visualized hydraulic retarder, a visualized testing chamber, a circular guide rail, a synchronizer, a double-pulse laser, CCD (Charge Coupled Device) cameras, a water storage tank, a water pump, a pressure inductor, a pressure reducer, a particle dispenser, an electromagnetic flowmeter and the like; the visualized testing chamber is made of a transparent material and is suitable for an aqueous medium; the braking shaft is driven by an external driving system, is supported by a bearing, passes through a shell of the hydraulic retarder and is connected with a driving wheel of the retarder; the first CCD camera is arranged at the top of the visualized testing chamber and is used for shooting downwards; the second CCD camera and the double-pulse laser are arranged on the circular guide rail and can arbitrarily rotate along the guide rail; and the circular guide rail and the visualized testing chamber are respectively fixed on the base. The testing device and the method disclosed by the invention can be used for carrying out three-dimensional PIV measurement on the internal flow field of the hydraulic retarder and is simple and compact in structure, good in universality and easy to control.

The present invention provides a device for non-invasive monitoring thermal stress of a user. The device is capable of monitoring the internal body temperature and changes in the internal body temperature of a user. Also, the device is capable of alerting a user when the user is in danger of thermal stress.

A pressure indicator for a respiratory treatment device, the pressure indicator including an instrument for measuring pressures, a conduit configured to transmit a pressure within the respiratory treatment device to the instrument, and a pressure stabilizer orifice positioned within the conduit.

An oral hygiene implement comprising having a handle, head, and a neck extending between the handle and the head is described. The head has a plurality of cleaning elements and/or massaging elements attached to the head. The oral hygiene implement also has a force sensor and an output source. The output source provides a plurality of output signals which correspond to a plurality of conditions to a user.

An apparatus comprising a processing unit; a feed conduit and an effluent conduit connected to the processing unit; at least one operating parameter device associated with the processing unit, the feed conduit, the effluent conduit or a combination thereof; a catalytic alloy hydrogen sensor in fluid communication with the processing unit, the feed conduit, the effluent conduit or a combination thereof; and a computer processor electrically connected to the catalytic alloy hydrogen sensor, has been developed. The apparatus may also have at least one operating parameter device and an electrical connection between the computer processor and at least one of the operating parameter devices. The apparatus may be used for the control of a processing unit or operation. A pressure indicator may be positioned to indicate the pressure of fluid passing through the catalytic alloy hydrogen sensor and there may be an electrical connection between the computer processor and the pressure indicator. The catalytic alloy hydrogen sensor may be a palladium-nickel catalytic alloy hydrogen sensor.

A pressure indicating device for self contained breathing apparatus includes a piston arrangement which is responsive to the relative pressures of the supply and the pressure at the outlet of the first stage regulator to assume several different positions in the containment housing. Piston position is recognized by electronic circuitry and an LED display is lighted accordingly to provide a series of unique signals to the user, of the remaining quantity of breathing fluid. In one embodiment of the invention, plural, graduated-size pistons provide a progressive indication of the air supply. In another embodiment, a single, stepped piston effects progressive electrical contact at various positions in the travel of the piston.

There are provided methods of packaging and packages that prevent damage of the package contents while maintaining sterility and that limit the negative effects of sterilization on sensors such as enzyme sensors. A method of packaging an enzyme sensor includes providing an enzyme sensor such as a glucose oxidase sensor in a gas impermeable package comprising one or more of oxygen and water, removing a significant portion of the oxygen and water present in the package, and sealing the package. The resulting package comprises the enzyme sensor in an atmosphere that is substantially free of oxygen and water. The package can also include a pressure indicator that indicates when the package has exceeded a predetermined pressure.

A fluid control valve includes an adjustable soft start capability and pressure indicator device. The fluid control valve isolates an input port and connects an outlet port to an exhaust port when the fluid control valve is in its closed position. A system is provided for locking the fluid control valve in the closed position. The indicator device is used to provide an indication of the pressure within the outlet port to ensure safe operation.

Disclosed are systems and methods for preserving wine in a vessel. The system comprises a stopper adapted for engaging and airtight sealing the mouth of the vessel; the stopper comprises a valve assembly operable to draw and maintain a pressure differential within the vessel and a pressure indicator operable to indicate vacuum pressure within the vessel The system further comprises a pump operable to engage the valve assembly and to draw gas from within the vessel to an external atmosphere.

Disclosed herein are embodiments of a tire pressure indicator (30) for providing indication of a tire's pressure. The indicator (30) may include first and second indicators (82, 104) corresponding to first and second ranges of tire pressures. The indicator (30) may also include a rolling diaphragm (58) that actuates display of the first or second indicators (82, 104). The indicator (30) may include a plurality of channels (78) that permit communication of air between an exterior portion of the indicator (30) and an interior portion of the indicator (30) and a filter (96) that permits air therethrough, but prevents moisture from passing therethrough.

A pressure indicator comprising a piston which is displaceably mounted in a housing counter to the pressure of a spring on an axis and which can be impinged upon with pressure which is to be measured; also comprising optical display means actively cooperating with the piston. According to the invention, the structure of the indicator is simplified, compact and robust. This is achieved in that the optical display means comprise a front glass arranged perpendicular to the axis and one or several display elements which can be moved by the piston relative to said front glass and which respectively alternate at various pressures between a first position wherein they are optically visible from outside through the front glass and a second position wherein they are not optically visible from outside through the front glass.

An inflatable sport ball, such as a basketball, a football, a soccer ball, a volleyball or a playground ball, is provided with a self-contained inflation mechanism, or multiple self-contained inflation mechanisms, for inflating or adding pressure to the ball and a pressure sensor and pressure indicator to indicate the internal pressure of the ball. The inflation mechanism is a pump which is positioned and retained inside of the ball and which is operable from outside of the ball to pump ambient air into the ball. The pressure indicator provides a numerical indication of the internal pressure of the ball as measured or determined by the pressure sensor.