A 360-degree blind-angle-free position detection magnetic sensor comprising a hollow plastic box, wherein a hollow reed is transversely disposed in the plastic box, and damping springs are respectively disposed at the two ends of the hollow reed; the outer ends of the two damping springs are respectively fixedly connected with the inner walls of the two ends of the plastic box; the hollow reed is movably suspended in an inner chamber of the plastic box, and a conductive magnetic ring is sleeved on the hollow reed; a conductive column is disposed in the plastic box; the inner end of the conductive column penetrates into the hollow reed, and is matched with the hollow reed; lead wires that are electrically connected with the conductive column and the hollow reed are disposed on the plastic box.

Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.

There is described a domestic appliance (1), in particular a cooking hob (2), for the thermal treatment of food products comprising at least one or more cooking zones (2), a power supply unit (5) being controllable into at least a stand-by mode and a powered-on mode and being configured to supply an energy to the one or more cooking zones (2) when being controlled in the pow-cred-on mode and a control group (17) coupled to the power supply unit (5) and configured to control the power supply unit (5) from the stand-by-mode into the powered-on mode; wherein the control group (17) is controllable between a rest configuration and an active configuration at which control group (17) is configured to set the power supply unit (5) from the stand-by-mode into the powered-on mode. The control group (17) comprises at least one magnetic switching device (18) having a magnetic and/or ferromagnetic element (19), the magnetic and/or ferromagnetic element (19) being moveable between at least a rest state and an active state. The control group (17) is controlled in the rest configuration and the active configuration with the magnetic and/or ferromagnetic element (19) being positioned in respectively the rest state and the active state. The magnetic and/or ferromagnetic element is biased in the rest state and is controllable by means of interaction with a metallic and/or magnetic and/or ferromagnetic activation device into the active state.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

The disclosure provides a non-contact switch device for use on material handling equipment, including a reed switch and a magnet, wherein the non-contact switch device has on and off positions achieved by the presence or absence of magnetic induction between the magnet and the reed switch. The non-contact switch devices are disclosed in the form of a main power switch, an interlock switch, a limit switch.

A magnetic type switch may include a magnet having a magnetic pole face arranged to face a magnetic body provided in an object. A change in magnetic field due to a change in distance between the magnetic body and the magnet by an operation of the object may be detected to output a signal for indicating at lease one of a presence and an absence of the operation of the object. The switch may also include a casing in which the magnet may be disposed, where the casing may have a facing part between the magnet pole face of the magnet and the magnetic body. The switch may further include a protector member formed of a non-magnetic body having a predetermined thickness in a direction vertical to the magnetic pole face, where the protector member maybe attached to the casing to cover at least the facing part.

Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.

Hydraulic bi-directional flow switches are disclosed. A disclosed example apparatus includes a piston disposed in a fluid channel between a first fluid connection and a second fluid connection, where the first and second fluid connections define a fluid pathway for hydraulic steering fluid. The example apparatus also includes a detector to detect a movement of the piston away from a default position of the piston, where the piston is to displace from the default position when the hydraulic steering fluid flows along the fluid pathway.

A cooling appliance includes a cabinet, first and second doors connected to the cabinet and a door-opening detection device having a magnetic element disposed on the first door and a magnetic sensitive element disposed on the cabinet. A first magnetic conductive element on the second door can be magnetized by the magnetic element. The magnetic sensitive element can produce a door-opening signal based on a magnetic field of the first magnetic conductive element. The magnetic sensitive element produces the door-opening signal when at least one of the doors is open. In this way it can be detected, by using one suite of door-opening detection devices, if any door among multiple doors is in an open state. The structure is simple, and the number of components can be reduced. Moreover, wires are reduced, which lowers manufacturing costs and difficulty.

Magnetic coupling devices are disclosed which may be configured in at least three states. The various states may be provided through one or more of altering a position of a permanent magnet relative to another permanent magnet and altering a current level in a coil surrounding a permanent magnet.