Systems and devices to control rotational and/or arcuate motion are provided herein. In some examples, a hinge system is configured to replace a conventional door hinge and to control motion of the door. In some examples, a hinge system is configured to replace a conventional door hinge and to control motion of the door by employing a shear thickening fluid. In some examples, a door closure system is configured to replace a conventional door hinge and to control motion of the door by employing two opposing springs.

Systems and devices to control rotational and/or arcuate motion are provided herein. In some examples, a hinge system is configured to replace a conventional door hinge and to control motion of the door. In some examples, a hinge system is configured to replace a conventional door hinge and to control motion of the door by employing a shear thickening fluid. In some examples, a door closure system is configured to replace a conventional door hinge and to control motion of the door by employing two opposing springs.

A system for avoiding pinching in vehicle doors includes capacitive proximity sensors for being mounted at each door along closing surfaces. The system also includes an accelerometer for being arranged in each door, a stopper bar, and a release mechanism for the stopper bar. The capacitive proximity sensors, the accelerometer, and the release mechanism are connected to a control unit arranged such that the stopper bar is moved to a blocking position when the capacitive proximity sensor for the same door senses an object and the door has stopped accelerating.

A vehicle door system includes a vehicle door and electrically-powered linear and rotary actuators. The vehicle door system also includes a pinch sensor. Upon receiving an open door command, a controller actuates the linear actuator and then actuates the rotary actuator to open the door. The controller also actuates the linear actuator to prevent closing of the door if the pinch-sensor detects an object in a door opening. The controller actuates the rotary actuator to close the door upon receiving a close door command.

An anti-pinch window control system and an anti-pinch window control method are disclosed. The anti-pinch window control system includes a door panel, a glass window, a sound detection module, and a control module. When the glass window is closing, if a sound position of a sound on the glass window is close to an end portion of the glass window, the control module controls the glass window to stop closing. The sound on the glass window serves as the main judgment standard for the anti-pinch window control system, which can reduce the possibility of misjudgment.

An open-close body driving motor includes: a motor main body; a driving circuit; and a control circuit that adjusts driving power using PWM control and controls an operation mode of the open-close body to be changeable through the motor main body. The control circuit includes a PWM control unit, and a catch processing unit that determines catching by the open-close body and performs a catch process. When an operation command of the open-close body is created in a state in which a catch prevention function is not operated, the PWM control unit of the control circuit vibrates the motor main body in an audible range, such that the motor main body performs a sound-emitting operation, by including the frequency of the audible range in the control frequency for the PWM control before or during an operation of the open-close body, the operation being based on the operation command.

A safety system for an automatic door including an ultrasonic sensor installed in a rotary frame to detect motion of the rotary frame in order to stop operation of an automatic door in order to prevent injury from the door.

A retractable arm device, system, and method with a locking mechanism for preventing items placed in a device or receptacle from getting stuck, damaged, or torn. The retractable arm includes an inner tube, a pawl, and an outer tube surrounding the inner tube. The inner tube slides within the outer tube and the pawl preventing the retractable arm from moving into an extended position under particular conditions. The retractable arm may be placed in a receptacle for items to prevent the door from being reopened before the door is fully closed.

In a driver, supposing that an angular position of the rotator in a state where a coupler coupling a link member and the rotator together is located at a rearmost position is regarded as a reference angular position, a first angular position is an angular position where the rotator is shifted from the reference angular position in a first rotation direction by an angle θ1, and a second angular position is an angular position where the rotator is shifted from the reference angular position in a second direction opposite to the first rotation direction by an angle θ2 smaller than the angle θ1. The driver has a regulating portion which does not allow the rotator to rotate in the second rotation direction from the second angular position.

A safety system configured to prevent a finger from getting jammed in a gap between an automatic door and a door frame and stop an operation of the automatic door when the automatic door is caught by an obstacle. The safety system prevents a safety accident when a door D1, which is disposed at a gap d from a doorframe 10, configured to slide, and made of a transparent or semi-transparent plate shaped material, is opened or closed while sliding relative to a column 20 on which a push switch for opening the door D1 is installed The safety system for an automatic door includes a first switch means S1 installed along a front edge of the door D1, and a second switch means S2 installed at a front end of the doorframe 10 to cover the gap d between a surface of the door D1 and the front end of the doorframe 10.