Temperature locale sensors include an enclosure defining a sealed volume with a phase-change material therein at a known pressure. The phase-change material is formulated to exhibit a gas-to-solid phase change, without condensing to a liquid phase, at the known pressure and a targeted temperature, i.e., the material's “deposition temperature.” The phase-change material—while at least partially in gaseous form, either initially or after sublimation—is exposed to an environment with temperatures varying by location, including a maximum temperature above the phase-change material's deposition temperature and other temperatures at or below the deposition temperature. The gaseous phase-change material, in a location at the deposition temperature, solidifies from its gaseous phase to form solid grain deposits on a surface within the enclosure of the sensor. The solid deposits precisely identify the location of the specific, targeted deposition temperature.

Temperature locale sensors include an enclosure defining a sealed volume with a phase-change material therein at a known pressure. The phase-change material is formulated to exhibit a gas-to-solid phase change, without condensing to a liquid phase, at the known pressure and a targeted temperature, i.e., the material's “deposition temperature.” The phase-change material—while at least partially in gaseous form, either initially or after sublimation—is exposed to an environment with temperatures varying by location, including a maximum temperature above the phase-change material's deposition temperature and other temperatures at or below the deposition temperature. The gaseous phase-change material, in a location at the deposition temperature, solidifies from its gaseous phase to form solid grain deposits on a surface within the enclosure of the sensor. The solid deposits precisely identify the location of the specific, targeted deposition temperature.

The disclosure provides an identification tag including a bag body, an identification substance, and an identification component. The bag body is configured to be disposed on a product, and has a chamber. The identification substance is stored in the chamber. The identification substance is colored, and the state of the identification substance is changeable with temperature. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body, wherein the at least one crack is connected to the chamber.

The disclosure provides an identification tag including a bag body, an identification substance, and an identification component. The bag body is configured to be disposed on a product, and has a chamber. The identification substance is stored in the chamber. The identification substance is colored, and the state of the identification substance is changeable with temperature. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body, wherein the at least one crack is connected to the chamber.

Temperature locale sensors include an enclosure defining a sealed volume with a phase-change material therein at a known pressure. The phase-change material is formulated to exhibit a gas-to-solid phase change, without condensing to a liquid phase, at the known pressure and a targeted temperature, i.e., the material's deposition temperature. The phase-change materialwhile at least partially in gaseous form, either initially or after sublimationis exposed to an environment with temperatures varying by location, including a maximum temperature above the phase-change material's deposition temperature and other temperatures at or below the deposition temperature. The gaseous phase-change material, in a location at the deposition temperature, solidifies from its gaseous phase to form solid grain deposits on a surface within the enclosure of the sensor. The solid deposits precisely identify the location of the specific, targeted deposition temperature.

A resonator (1, 1, 1) for reducing airborne noise has at least one first ring-shaped chamber (2, 2, 2) arranged between an inlet piece (6, 6) and an outlet piece (7, 7). An inner tube (3) or inner tube pieces (4, 4, 5) are arranged between the inlet piece (6, 6) and outlet piece (7, 7) and have wall apertures (18, 19, 28, 28, 29, 29, 30, 30) as a connection to the adjacent ring-shaped chamber (2, 2, 2). The first ring-shaped chamber (2, 2, 2) is divided by at least one radially encircling dividing rib (13, 13, 13) into at least two sub-chambers (14, 14, 14, 15, 15, 15). The dividing rib (13, 13, 13) has a free end that, relative to the wall that is adjacent in a radial direction, forms an encircling annular space (16) for receiving an air layer that co-resonates in steady-state.

The disclosure provides an identification tag including a bag body, an identification substance, and an identification component. The bag body is configured to be disposed on a product, and has a chamber. The identification substance is stored in the chamber. The identification substance is colored, and the state of the identification substance is changeable with temperature. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body, wherein the at least one crack is connected to the chamber.

The disclosure provides an identification tag including a bag body, an identification substance, and an identification component. The bag body is configured to be disposed on a product, and has a chamber. The identification substance is stored in the chamber. The identification substance is colored, and the state of the identification substance is changeable with temperature. When the identification substance is changed from one of the states to the other of the states, the identification substance has a volume increase and causes at least one crack on the bag body, wherein the at least one crack is connected to the chamber.

The ultrasonic-transducer mounting structure includes: a housing including: a body part which is formed into a hollow cylindrical shape and is provided at its front surface with a transmission surface allowing an ultrasonic wave to pass therethrough and is designed to accommodate an ultrasonic transducer therein; and plural connection pieces provided to a side surface of the body part; and a holder fixed to a rear surface of a bumper and designed to hold the housing such that the transmission surface of the housing is exposed via an opening of the bumper. The holder includes plural reception pieces to which the plural connection pieces are detachably coupled respectively. The plural reception pieces are fixed to the rear surface of the bumper to surround the opening.