公开(公告)号：US3586936A

公开(公告)日：1971-06-22

申请号：US3586936D

申请日：1969-10-16

Applicant: C & B CORP

Inventor： MCLEROY ROBERT P

IPC: B06B1/02 ,  H01V9/00

CPC classification number: B06B1/0223 ,  B06B2201/58 ,  B06B2201/76

Abstract: Solid state electronic circuitry for driving the magnetostrictive transducer of ultrasonic dental tools is described, wherein tuning to resonance is controlled by circuit adjustment to maximum brightness of a tuning indicator lamp. Variation of brightness of the lamp as a function of tuning accuracy is achieved by feeding a reference voltage proportional to the excitation current flowing through the ultrasonic transducer to the input of a differential amplifier stage to compare it with a preset reference voltage. The varying output voltage thus derived is amplified to provide an energization current for the indicator lamp which will be proportional to the transducer excitation current and thus an indication of tuning to resonance.

公开(公告)号：US3351832A

公开(公告)日：1967-11-07

申请号：US63562967

申请日：1967-02-01

Applicant: AEROJET GENERAL CO

Inventor： HOUGHTON RICHARD B ,  BELL STEVEN A

IPC: B06B1/02 ,  B06B1/08

CPC classification number: B06B1/08 ,  B06B1/0207 ,  B06B2201/58

公开(公告)号：US3151284A

公开(公告)日：1964-09-29

申请号：US9701161

申请日：1961-03-20

Applicant: CAVITRON ULTRASONICS INC

Inventor： CLAUS KLEESATTEL

IPC: B06B1/02 ,  H03B5/40

CPC classification number: H03B5/40 ,  B06B1/0261 ,  B06B2201/58

公开(公告)号：US3148289A

公开(公告)日：1964-09-08

申请号：US84200059

申请日：1959-09-24

Applicant: PHILIPS CORP

Inventor： JOSEPHUS PIJLS HERMANUS STEPHA ,  ERNST ENZ ULRICH

IPC: B06B1/02 ,  H03H3/013

CPC classification number: H03H3/013 ,  B06B1/0261 ,  B06B2201/55 ,  B06B2201/58

公开(公告)号：US3044016A

公开(公告)日：1962-07-10

申请号：US74379258

申请日：1958-06-23

Applicant: MOTOROLA INC

Inventor： NEIL FRIHART HENRY ,  KRAKORA JR JAMES J

IPC: B06B1/02

CPC classification number: B06B1/0261 ,  B06B2201/58 ,  B06B2201/70

公开(公告)号：US2921288A

公开(公告)日：1960-01-12

申请号：US65569646

申请日：1946-03-20

Applicant: O'NEILL JOHN P ,  LEIGH JOHN S

Inventor： O'NEILL JOHN P ,  LEIGH JOHN S

IPC: B06B1/02 ,  B06B1/08

CPC classification number: B06B1/0215 ,  B06B1/085 ,  B06B2201/40 ,  B06B2201/58 ,  B06B2201/74

公开(公告)号：US2872578A

公开(公告)日：1959-02-03

申请号：US46452054

申请日：1954-10-25

Applicant: JACK KAPLAN ,  TURNER FRANK T

Inventor： JACK KAPLAN ,  TURNER FRANK T

IPC: B06B1/02

CPC classification number: B06B1/0253 ,  B06B2201/58