Patent Number: 8,816,849

Title: Overhang warning device

Abstract: Suspended or overhanging of obstructions are selectively signaled to an individual by a device that can worn by an individual. The device includes a first sensor that is oriented to selectively detect a suspended or overhanging obstruction at an elevation above the housing and a second distance sensor that is oriented to selectively detect an object at an elevation of the housing. A logic circuit within the housing is electrically connected to the first and second sensors and emits a response if the first sensor is activated, but emits no response if the first and second sensors are both activated. A signaling device electrically connected to the logic circuit is activated upon emission of a response from the logic circuit.

Inventors: Hong; Andrew L. (Ayer, MA), Cannon; Lindsay (Harvard, MA), Devlin; Mackenzie P. (Harvard, MA), Schmidt; Matthew L. (Harvard, MA), Yates; Jeffrey A. (Groton, MA)


International Classification: G08B 1/08 (20060101); G08B 23/00 (20060101); G08B 21/00 (20060101); G01C 3/08 (20060101); G01S 15/00 (20060101); G06F 17/10 (20060101)

Expiration Date: 8/26/12018