Title: Acoustic delay surface wave motion transducer systems with enhanced stability

Abstract: Transducer devices employing relative changes in the acoustical propagation characteristics of surface waves traveling on opposite surfaces of a thin elastic cantilever beam yield a measure of the degree of flexing or surface strain of the elastic member. A multiplexed phase comparison loop and signal processing circuit alternately cooperates with the opposite surface waves of the transducer to supply a digital output proportional to strain and relatively free of drift, mode locking, and other spurious interactions.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Perahia, Avraham (Sharon, MA, US)

Application Number: 554854
Filing Date: 1975-03-03
Publication_date: 1976-02-24
Assignee: Sperry Rand Corporation (New York, NY)
Primary Class(es): 310/313B 73/514.28, 333/154, 333/155
Other Classes:
US Patent Ref:

3848144	Nov, 1974	Schissler	310/9.
3858064	Dec, 1974	Schissler	310/9.
3878477	Apr, 1975	Dias et al.	310/8.
3888115	Jun, 1975	Schwartz	310/9.

Other Refs:
Primary Examiner: Budd, Mark O.
Assistant Examiner:
Attorney: Terry; Howard P.