Abstract: Among other things, we describe a physical bulletin board. The bulletin board includes at least one physical component configured to interface with at least one electronic component. In some implementations, the bulletin board includes the electronic component, e.g., as a built-in display. For example, the built-in display may be associated with a processor that can run software that augments the functionality of the bulletin board. In some implementations, the bulletin board includes a component, such as a mounting apparatus, that receives a mobile computing device (MCD). For example, the MCD can run software that augments the functionality of the bulletin board.

Abstract: Among other things, we describe a physical bulletin board. The bulletin board includes at least one physical component configured to interface with at least one electronic component. In some implementations, the bulletin board includes the electronic component, e.g., as a built-in display. For example, the built-in display may be associated with a processor that can run software that augments the functionality of the bulletin board. In some implementations, the bulletin board includes a component, such as a mounting apparatus, that receives a mobile computing device (MCD). For example, the MCD can run software that augments the functionality of the bulletin board.

Abstract: Disclosed and claimed herein is an improved leg brace having a thigh frame, a shank frame, a knee assembly rotatably coupling the thigh frame to the shank frame, and a shoe component attached to the shank frame; the knee assembly having a spring, clutch, means for engaging the clutch; and programmable means for engaging the clutch at a selected angle between the thigh frame and shank frame.

Abstract: Disclosed and claimed herein are spiral torsion springs, non-linear torsion springs, and non-linear torsion spring assemblies. These devices are useful in damping applications, orthotic joint applications and servo control applications.

Abstract: The invention relates to systems and methods for controlling angular position of a pivotable platform relative to a radiation source. In one embodiment, an apparatus for controlling angular position of a pivotable platform relative to a radiation source includes a frame, a thermal actuation element coupled to the frame, a pivotable platform positioned between the radiation source and the thermal actuation element so as to at least partially block energy from the radiation source from impinging on the thermal actuation element, and apparatus for pivoting the pivotable platform in response to a thermally controlled deformation of the thermal actuation element.

Abstract: Disclosed and claimed herein is an improved leg brace having a thigh frame, a shank frame, a knee assembly rotatably coupling the thigh frame to the shank frame, and a shoe component attached to the shank frame; the knee assembly having a spring, clutch, means for engaging the clutch; and programmable means for engaging the clutch at a selected angle between the thigh frame and shank frame.

Abstract: Disclosed and claimed herein are spiral torsion springs, non-linear torsion springs, and non-linear torsion spring assemblies. These devices are useful in damping applications, orthotic joint applications and servo control applications.

Abstract: The invention relates to systems and methods for controlling angular position of a pivotable platform relative to a radiation source. In one embodiment, an apparatus for controlling angular position of a pivotable platform relative to a radiation source includes a frame, a thermal actuation element coupled to the frame, a pivotable platform positioned between the radiation source and the thermal actuation element so as to at least partially block energy from the radiation source from impinging on the thermal actuation element, and apparatus for pivoting the pivotable platform in response to a thermally controlled deformation of the thermal actuation element.

Abstract: Embodiments of the invention relate to walking/running braces and to devices for enhancing locomotion, specifically human bipedal locomotion. More particularly, it relates to a controlled mechanical device which provides support of the torso via the hip sockets, reduces the metabolic energy associated with walking/running and reduces the incidence of falls caused by insufficient leg thrust. Embodiments of the invention also relates to reducing the strain and metabolic energy consumption associated with walking/running with a heavy backpack or other significant carried load.