A kill switch including a switch assembly. When the switch assembly moves from a switch first configuration to a switch second configuration with the switch assembly operatively connected to a controller of a tractor, a kill electrical signal is provided to the controller to stop the tractor powering a power take-off thereof. A cord is securable to the switch assembly and to the piece of machinery to extend along a rotary drive shaft between the tractor and the piece of machinery. A switch actuating element extends from the cord, the switch actuating element being removably securable to the switch assembly. In the switch first configuration with the switch actuating element secured to the switch assembly, the switch actuating element maintains the switch assembly in the switch first configuration. When the switch actuating element is removed from the actuating element receiving portion, the switch assembly moves to the switch second configuration.

The invention relates to an emergency stop switch, having: a switch mechanism with a manually operable switch and with a first contact element which is operatively connected to the switch, wherein the switch is configured to bring the first contact element into contact with a second contact element to trigger an emergency stop function. A cable pull mechanism with a switch tongue guided in a switch tongue guide is connected to a first end of a cable, wherein a switch tongue spring preloads the switch tongue during operation in a direction away from the cable. The cable is connected on its second end with preload to an equalizing spring during operation, wherein the first contact element is operatively connected to the switch tongue. When the preloaded cable is pulled, is guided in the switch tongue guide in the direction of the cable, opposing a spring force of the switch tongue spring, and in the process brings the first contact element into contact with the second contact element in order to trigger the emergency stop function by the cable pull mechanism.

An apparatus for an imbalance test includes a strain measurement module that measures a strain voltage across terminals of a strain gauge. The strain voltage is representative of an amount of force on the strain gauge. The apparatus includes a test measurement module that measures a test voltage across the terminals of the strain gauge while a test resistor is connected in parallel with a resistor of the strain gauge. The test resistor is connected while the test measurement module measures the test voltage and is disconnected while the strain module measures strain voltage. The apparatus includes an average module that calculates an average strain voltage from two strain voltage measurements. The strain voltages are measured preceding and after the test voltage measurement. The apparatus includes a difference module that determines a difference voltage. The difference voltage is a difference between the average strain voltage and the test voltage.

Provided are an emergency stop apparatus including a switch unit installed in a work space, electrically connected to a facility, and operable by pulling and a wire which is disposed in the work space so that tension is applied and of which at least one side is detachably mounted on the switch unit and an emergency stop method for quickly stopping the facility at a desired position within the work space in a manner of pulling or pushing the wire.

Embodiments relate generally to systems and methods for actuating a safety switch, particularly by converting a linear force to a rotary motion. A safety switch may comprise: a housing, wherein the housing comprises a mating cam; a face plate, wherein the face plate is coupled to the housing; and a subassembly coupled to the face plate, wherein the subassembly comprises: a base, wherein the base comprises a slot; a cam, wherein the cam is positioned within the base; a pushbutton, wherein the pushbutton comprises a hole; and a pin positioned through the hole of the pushbutton and the slot of the base; wherein the cam, the base, and the pushbutton are mated together with the pin; wherein the subassembly is not rotatable due to the pin.

Embodiments of the disclosure provide a waterproof pullcord station for management of patient care. The pullcord station includes a cord, and a face plate assembly coupled to a wall plate assembly. The face plate assembly includes a cord retainer coupled to the cord, and an actuator post coupled to the cord retainer. The wall plate assembly includes a wall plate comprising a frontside and a backside, wherein the frontside comprises a single material and the backside comprises an opening, the wall plate serving as a housing for an electronic circuit. The wall plate assembly further includes the electronic circuit wirelessly coupled to the actuator post and configured to determine whether the cord has been pulled by monitoring the wireless coupling between the actuator post and the electronic circuit. The wall plate assembly further includes a back cap configured to interface with the opening of the backside.

The disclosure is directed at a method and system for a pull-cord sensor assembly that includes an activation portion including a magnet portion for generating a magnetic field; a sensor portion for sensing a level of the magnetic field level; a comparator for comparing the level of the magnetic field with a threshold value; and a pull cord integrated with the activation portion.

A cable pull switch includes a polychotomous sensor configured to provide a reading of at least one of a plurality of values, the reading corresponding to a tension on a pull cable or a linear displacement of an end of a pull cable. A processor coupled to the polychotomous cable pull sensor configured to determine a rate of change of the value of the reading from the sensor and determine an occurrence of a cable pull event, the determination based on the determined rate of change of the value, and determine whether the rate of change of the value of an electrical resistance through the polychotomous cable pull sensor is below a threshold rate of change value, and adjust an upper pull threshold value to a new upper pull threshold value that is based on a present reading of the value of the electrical resistance through the strain gauge.

A kill switch including a switch assembly. When the switch assembly moves from a switch first configuration to a switch second configuration with the switch assembly operatively connected to a controller of a tractor, a kill electrical signal is provided to the controller to stop the tractor powering a power take-off thereof. A cord is securable to the switch assembly and to the piece of machinery to extend along a rotary drive shaft between the tractor and the piece of machinery. A switch actuating element extends from the cord, the switch actuating element being removably securable to the switch assembly. In the switch first configuration with the switch actuating element secured to the switch assembly, the switch actuating element maintains the switch assembly in the switch first configuration. When the switch actuating element is removed from the actuating element receiving portion, the switch assembly moves to the switch second configuration.

A tether kill switch for a motorcycle includes a sensor module and a key. The sensor module is adapted to receive the key and includes a magnetic substrate and at least one sensor. The key is adapted to magnetically couple with the sensor module. A vehicle control system includes a tether kill switch having a sensor module including a magnetic substrate and at least one programmable sensor. A first key and a second key each include at least one unique identifier, wherein the sensor module is adapted to receive either the first key or the second key that are each adapted to magnetically couple with the sensor module. The control system also includes a control unit, wherein the programmable sensor is adapted to identify at least one of the keys by the unique identifier, and send at least one information signal to the control unit based upon the unique identifier.