Abstract: An apparatus (30) that dissipates a force (44). The apparatus (30) can be implemented in a wearable embodiment (31) such as a helmet (50) as well as non-wearable embodiments (32). Elastic structures (210) within the apparatus (30) dissipate the force (44) striking a shielded mass (39).

Abstract: An apparatus (50) that dissipates a force (44). The apparatus (50) can be implemented in a wearable embodiment (31) such as a helmet (50) as well as non-wearable embodiments (32). As a helmet (50), the apparatus (30) can protect the user (40) from concussions that would otherwise result from an application of force (44) impacting the head (42) of the user (40) by dissipating the impacting force (44). A variety of components of the helmet (50) can assist in the dispersion process, including but not limited to the use of elastic structures (210) within the apparatus (30).

Abstract: A system and method for delaying the activation of a powered device, such as a battery powered device. The activation of the device is triggered by contact with a particular environmental characteristic encountered by the device. For example, the system can be configured to activate upon contact with a particular pH value. Upon contact with the particular environmental characteristic, the restraining component (such as a magnetic field or a separating member) that prevents activation of the device is moved, modified, or caused to yield such that the device is activated.

Abstract: A system and method are provided to delay closure of an electrical circuit of a battery-powered electrical device, intended to operate remotely in an environment in which the pH value changes from one value to another. Two electrical contacts of an electrical circuit are separated by an insulator that holds the circuit open until the device is exposed to an environment having a predetermined pH value. Exposure of the insulator to an environment having that pH value causes the insulator to dissolve and the circuit to close, energizing the device. Alternatively, A Hall effect transistor or a reed switch may be used as the switch. It is held open by the presence of a magnetic field held in place by material that is dissolvable at a predetermined pH level. When a region having that pH level is reached, the material dissolves and the circuit closes.

Abstract: A system and method are provided to delay closure of an electrical circuit of a battery-powered electrical device, intended to operate remotely in an environment in which the pH value changes from one value to another. Two electrical contacts of an electrical circuit are separated by an insulator that holds the circuit open until the device is exposed to an environment having a predetermined pH value. Exposure of the insulator to an environment having that pH value causes the insulator to dissolve and the circuit to close, energizing the device. Alternatively, A Hall effect transistor or a reed switch may be used as the switch. It is held open by the presence of a magnetic field held in place by material that is dissolvable at a predetermined pH level. When a region having that pH level is reached, the material dissolves and the circuit closes.