Accession Number : AD0163879

Title :   Elapsed Time Indicator.

Descriptive Note : Patent,

Corporate Author : OFFICE OF THE SECRETARY OF THE ARMY WASHINGTON D C

Personal Author(s) : Porter,Frank K. , Jr. ; Sonjara,Boris

Report Date : 19 DEC 1972

Pagination or Media Count : 4

Abstract : The invention relates to timing or switching devices and more particularly pertains to elapsed time indicators or time delay switches of the hydromagnetic type wherein the period commences upon release of a piston which is magnetically coupled to a fixed element and moves through a viscous fluid toward the element.

Descriptors :   (*TIME SWITCHES, *PATENTS), PISTONS, MAGNETIC MATERIALS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE