Patent · US Expired

Time display apparatus

US4742501A · kind A · utility

37Cited by
15References
20Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJul 31, 1987
Grant dateMay 3, 1988
Priority date
Expiry dateJul 31, 2007

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG04G9/0082
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A time display apparatus including a display having a digital display portion and a peripheral analog display portion comprised of a plurality of display segments. Display control means is provided for controlling the digits of the digital display and the segments of the analog display. A manual selection mode switch is used to provide at least two separate modes of control including a normal time mode in which the digital display registers hours and the analog display registers minutes, and a count mode in which the digital display registers minutes and the analog display registers seconds. The count mode can be separated into two separate modes, one for counting up and one for counting down. Furthermore, there is provided an alarm mode associated with the normal time mode.

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