Accession Number : AD0164768

Title :   Rotary Timer.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON D C

Personal Author(s) : Hadfield,Harry J.

Report Date : 23 JAN 1973

Pagination or Media Count : 5

Abstract : This invention relates to a fluid controlled rotary timer capable of measuring elapsed times ranging from minutes to months and which is insensitive to gravitational forces. A rotary paddle member is operatively positioned within a circumambient housing containing a viscous silicone gum retarding fluid. An external constant torque spiral spring is connected to one end of the paddle member while the other end of this paddle member serves as an output shaft.

Descriptors :   *Timing devices, *Patents, Springs, Fluids, Viscosity, Silicones

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE