Patent · US Expired

Autonomous ear-plug alarm with separate setting device

US6906983B2 · kind B2 · utility

10Cited by
6References
11Claims
0Family size

Inventors

Key dates

Filing dateDec 4, 2001
Grant dateJun 14, 2005
Priority date—
Expiry dateDec 20, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG04G13/021
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

An ear-plug alarm comprises a base station which sets the time, and ear-piece which provides autonomous timing and alarm functions after it is disconnected from the base station. The base station is implemented in personal computer software with an appropriate interface. Each ear-piece stores its own alarm setting, and operates autonomously after it is disconnected, so that a single base station can support any number of ear-pieces. With this method the alarm becomes a count down from the time that it is set, relieving the ear-piece timer of any long-term accuracy requirement.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.