Magnetically Actuated Clutches TRIZ Cases

A constant low braking torque from a torque-limiting coupling lets an idle crane align with wind while preventing unstable auto-rotation.

An electromagnetic actuator and auxiliary lock give a one-way clutch independent freewheel and bidirectional lockup modes with lower power use.

An integrated external-rotor motor and gear unit drives axial gearbox switching while cutting actuator size, weight, and energy loss.

Direct solenoid-to-strut actuation improves one-way clutch mode control while reducing actuator size, mass, and sliding losses.

An electromagnetic clutch uses springs and an armature to remove parasitic drag and enable automatic manual gimbal drive on power loss.

A brake cage and earth ring use self-engaging members to lock a rotating shaft with low activation power and high torque capacity.

An internal peripheral wall redistributes axial force in a differential clutch, reducing tooth stress while preserving engagement during rotation.

An offset-centroid locking member cuts moment arm during pivoting, enabling high-speed coupling disengagement with lower parasitic losses.

A non-magnetic shroud and anti-deployment features keep clutch struts from hydraulic misfire while limiting ferromagnetic debris buildup.

Independent actuation of friction and positive-locking clutches prevents premature engagement and improves hybrid vehicle driving comfort.

Radial tangs and inner and outer notches let the armature plate flex toward the electromagnet, cutting air gaps and flattening cost.

Electrical energy is fed inductively to rotating shift actuators, removing sealed transfer points and reducing transmission power loss.

A thermally actuated switch limits coil self-heating, preventing false fuse trips and shortening clutch power cutoff after shaft lock.

Stator coils and permanent magnets replace one-way clutches to add forward, reverse, neutral, and engine braking in a compact speed converter.