Abstract: An apparatus for hardening a spring having a helical or beehive shape. The apparatus has a rotation support system and an induction heating system. The rotation support system is designed to support the spring while the spring is heated by the induction heating system. The induction heating system has an induction coil system having a coil system. The coil system has a spaced region designed to receive the spring and to heat the spring while the spring is supported on the rotation support system.

Abstract: An improved torque converter damper disc and/or clutch that includes the use of a parametric spring system. The parametric spring is configured to address critical inflection and pinch points along the spring longitudinal length. These critical points are areas of higher applied stress due to torsional stress and bending stress, the latter of which mainly attributed to centrifugal loading.

Abstract: An improved torque converter damper disc and/or clutch that includes the use of a parametric spring system. The parametric spring is configured to address critical inflection and pinch points along the spring longitudinal length. These critical points are areas of higher applied stress due to torsional stress and bending stress, the latter of which mainly attributed to centrifugal loading.

Abstract: An apparatus for hardening a spring having a helical or beehive shape. The apparatus has a rotation support system and an induction heating system. The rotation support system is designed to support the spring while the spring is heated by the induction heating system. The induction heating system has an induction coil system having a coil system. The coil system has a spaced region designed to receive the spring and to heat the spring while the spring is supported on the rotation support system.

Abstract: An apparatus for hardening a spring having a helical or beehive shape. The apparatus has a rotation support system and an induction heating system. The rotation support system is designed to support the spring while the spring is heated by the induction heating system. The induction heating system has an induction coil system having a coil system. The coil system has a spaced region designed to receive the spring and to heat the spring while the spring is supported on the rotation support system.

Abstract: A device for creating an angular biasing force for the roller tube of a security shade, which roller tube is mounted to a fixed structure of a vehicle. The device comprises an element attached to the fixed structure of the vehicle and a plurality of force units, each including a torsion spring exerting a biasing force between the structure and the roller tube, wherein the torsion springs each have a first inner end associated with the fixed structure and a second outer end associated with the roller tube so the torsion biasing force of each spring is in a direction from the fixed structure to the roller tube. The total angular force of the device is the sum of the biasing forces of all of the torsion spring force units when the units are connected in parallel. When connected in series, the magnitude of angular rotation is the sum of the angle of rotation of all units.

Abstract: A device for creating an angular biasing force for the roller tube of a security shade, which roller tube is mounted to a fixed structure of a vehicle. The device comprises an element attached to the fixed structure of the vehicle and a plurality of force units, each including a torsion spring exerting a biasing force between the structure and the roller tube, wherein the torsion springs each have a first inner end associated with the fixed structure and a second outer end associated with the roller tube so the torsion biasing force of each spring is in a direction from the fixed structure to the roller tube. The total angular force of the device is the sum of the biasing forces of all of the torsion spring force units when the units are connected in parallel. When connected in series, the magnitude of angular rotation is the sum of the angle of rotation of all units.

Abstract: A device for creating an angular biasing force for the roller tube of a security shade, which roller tube is mounted to a fixed structure of a vehicle. The device comprises an element attached to the fixed structure of the vehicle and a plurality of force units, each including a torsion spring exerting a biasing force between the structure and the roller tube, wherein the torsion springs each have a first inner end associated with the fixed structure and a second outer end associated with the roller tube so the torsion biasing force of each spring is in a direction from the fixed structure to the roller tube. The total angular force of the device is the sum of the biasing forces of all of the torsion spring force units when the units are connected in parallel. When connected in series, the magnitude of angular rotation is the sum of the angle of rotation of all units.

Abstract: A device for creating an angular biasing force for the roller tube of a security shade, which roller tube is mounted to a fixed structure of a vehicle. The device comprises an element attached to the fixed structure of the vehicle and a plurality of force units, each including a torsion spring exerting a biasing force between the structure and the roller tube, wherein the torsion springs each have a first inner end associated with the fixed structure and a second outer end associated with the roller tube so the torsion biasing force of each spring is in a direction from the fixed structure to the roller tube. The total angular force of the device is the sum of the biasing forces of all of the torsion spring force units when the units are connected in parallel. When connected in series, the magnitude of angular rotation is the sum of the angle of rotation of all units.