×

Combination balance analyzer and vibration spectrum analyzer

  • US 3,938,394 A
  • Filed: 11/30/1973
  • Issued: 02/17/1976
  • Est. Priority Date: 11/30/1973
  • Status: Expired due to Term
First Claim
Patent Images

1. In an electro-mechanical apparatus for detecting instantaneous amplitude of harmonic vibrations of a rotating body including:

  • an electromagnetic transducer for converting instantaneously some function of harmonic displacement into a complex electrical signal having a fundamental frequency corresponding to the instantaneous rotational velocity of said rotating body, the improvement comprising;

    independent means for generating a reference signal having uniformly increasing frequency said means being distinct from the said rotating body and also being distinct from said electromechanical transducer;

    signal filter means connected to receive the said complex electrical signal;

    signal filter means being responsive to said reference signal for instantaneously producing a resultant signal substantially free of components of the said complex electrical signal other than those at the existing instantaneous frequency of the said reference signal.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×