Inertial tachometers

• US 3,302,465 A
• Filed: 04/13/1964
• Issued: 02/07/1967
• Est. Priority Date: 04/19/1963
• Status: Expired due to Term

• Current Assignee: Raymond Mathey
• Original Assignee: Raymond Mathey
• Inventors: Mathey, Raymond
• Application Number:
  US04/359,315
• Time in Patent Office: 1,030 Days
• US Class Current: 73/504.16
• CPC Class Codes: G01C 19/5607 using vibrating tuning forks double-ended tuning forks using planar vibrating masses suspended at opposite ends G01C19/5719

Claims

1. AN INERTIAL TACHOMETER FOR MEASURING THE ROTATION OF A PLATFORM ABOUT A PREDETERMINED AXIS COMPRISING:

A SUPPORT SOLID WITH SAID PLATFORM AND WHOSE AXIS COINCIDES WITH SAID AXIS;

AN ELONGATED MEMBER RIGIDLY AND SYMMETRICALLY SUPPORTED BY SAID SUPPORT AND EXTENDING NORMALLY TO SAID AXIS;

TWO PRONGS, HAVING RESPECTIVE CENTERS OF SYMMETRY, RIGIDLY CARRIED BY SAID MEMBER AT SAID CENTERS AND SYMMETRICAL WITH RESPECT TO SAID SUPPORT;

SAID PRONGS HAVING TWO RESPECTIVE HALVES EXTENDING SYMMETRICALLY WITH RESPECT TO THE AXIS OF SAID MEMBER;

MEANS FOR EXCITING IN SAID PRONGS FLEXIONAL VIBRATIONS PARALLEL TO SAID MEMBER AND BENDING IN OPPOSITE DIRECTIONS SAID OPPOSITE HALVES OF SAID PRONGS;

AND MEANS FOR MEASURING THE TORSIONAL VIBRATIONS OF SAID MEMBER.