The invention relates to a membrane pressure switch (1) comprising a housing (2), in which a deformable membrane (3) is arranged, against which a mushroom shaped thrust element (4) abuts, which is movable by the deformation of the membrane (3); and a microswitch (5), which is arranged in the housing (2) opposite the mushroom shaped thrust element (4) by means of a fixing disk (6), wherein the fixing disk (6) is provided with an external thread (7), which is screwed into an internal thread (8) of the housing (2) in the mounted state of the fixing disk (6).

The invention relates to a membrane pressure switch (1) comprising a housing (2), in which a deformable membrane (3) is arranged, against which a mushroom shaped thrust element (4) abuts, which is movable by the deformation of the membrane (3); and a microswitch (5), which is arranged in the housing (2) opposite the mushroom shaped thrust element (4) by means of a fixing disk (6), wherein the fixing disk (6) is provided with an external thread (7), which is screwed into an internal thread (8) of the housing (2) in the mounted state of the fixing disk (6).

A device for detecting a sudden pressure variation in a fluid, including a housing open at one of its ends, a wall closing the housing to create a chamber, the wall being configured such that, when the external pressure outside the chamber is substantially stable or varies slowly, the internal pressure of the chamber is close to the external pressure, and the wall having mechanical characteristics such that it breaks when subjected to a predetermined difference between the external pressure and the internal pressure.

Systems, methods, and apparatuses for regulating the delivery of negative-pressure therapy are described. The system includes a negative-pressure source, an energy source, and a switch. The switch can include a first conductor electrically coupled to the negative-pressure source, a second conductor electrically coupled to the energy source, and a diaphragm having a first position electrically coupling the first conductor to the second conductor and a second position separated from the first conductor and the second conductor. The diaphragm is configured to move between the first position and the second position in response to a differential between a control pressure and a therapy pressure.

An input device includes an operation unit to receive an operation, at least one load detection unit to detect a load on the operation unit and detect the load according to capacitance between a pair of conductors, and a substrate on which an electrode as one of the pair of conductors of the load detection unit is arranged. The load detection unit includes the electrode, an operation deformation portion to deform in response to an operation on the operation unit, and a detection electrode as the other of the pair of conductors. The electrode, the operation deformation portion and the detection electrode are located between the substrate and the operation unit and arranged in this order from the substrate.

An input device includes an operation unit to receive an operation, at least one load detection unit to detect a load on the operation unit and detect the load according to capacitance between a pair of conductors, and a substrate on which an electrode as one of the pair of conductors of the load detection unit is arranged. The load detection unit includes the electrode, an operation deformation portion to deform in response to an operation on the operation unit, and a detection electrode as the other of the pair of conductors. The electrode, the operation deformation portion and the detection electrode are located between the substrate and the operation unit and arranged in this order from the substrate.

A rechargeable battery includes an electrode assembly in a case, and a cap assembly coupled to the case, the cap assembly having a cap plate sealing the case, the cap plate including a short-circuit hole and a conductive groove surrounding the short-circuit hole, an inversion plate in the conductive groove of the cap plate, a connection plate covering the short-circuit hole of the cap plate, and a short-circuit member between the connection plate and the inversion plate, the short-circuit member at least partially passing through the short-circuit hole and contacting the connection plate.

A differential pressure measurement range is widened and differential pressure can be measured particularly during low differential pressure. A first spool facing a space in a high pressure side is lighter than a second spool facing a space in a low pressure side in a state where a magnet is provided. Urging force of a first elastic member that urges the first spool toward the space in the high pressure side is smaller than urging force of a second elastic member that urges the second spool toward the space in the high pressure side, and the first elastic member and the second elastic member are disposed in series.

A multi-mode air compressor pressure switch is disclosed. A first mode of operation of the switch has a first range that includes a first cut-out pressure and a first cut-in pressure. A second mode of operation of the switch has a second range that includes a second cut-out pressure and a second cut-in pressure. The second range is smaller than the first range. The second mode of operation adds compressor output over the first mode of operation to extend operable time of a tool that is connected to a compressor that is controlled by the first mode and the second mode.

A pressure switch is provided which enables an increased pressure tightness. A pressure switch comprises a diaphragm, a cap to define a storage space for pressure fluid, a plate-shaped stopper configured to limit a position of the diaphragm in the event of pressure variation to define a working position, a coupling section for coupling outer circumferences of the diaphragm, the cap and the stopper to form a diaphragm unit, a ring-shaped member formed with a substantially same diameter as the diaphragm unit, a switch element, and a body (a tubular section of a joint section and a switch holding tube) configured to accommodate the ring-shaped member and the diaphragm unit while clamping an outer circumference section of the diaphragm unit together with the ring-shaped member so that the ring-shaped member comes into pressure contact with the outer circumference section.