公开(公告)号：US3022451A

公开(公告)日：1962-02-20

申请号：US66814657

申请日：1957-06-26

Applicant: GEN MOTORS CORP

Inventor： CHAPMAN FREDERICK W ,  HANYSZ EUGENE A ,  WELLER JR EDWARD F ,  MARTIN EDWARD J

IPC: G07C3/14

CPC classification number: G07C3/14

公开(公告)号：US2655036A

公开(公告)日：1953-10-13

申请号：US77719747

申请日：1947-10-01

Applicant: GEN MOTORS CORP

Inventor： CHAPMAN FREDERICK W

IPC: G01H1/10

CPC classification number: G01H1/10

公开(公告)号：US2957081A

公开(公告)日：1960-10-18

申请号：US46775954

申请日：1954-11-09

Applicant: GEN MOTORS CORP

Inventor： CHAPMAN FREDERICK W

IPC: G01T1/24

CPC classification number: G01T1/24

公开(公告)号：US2407536A

公开(公告)日：1946-09-10

申请号：US49188143

申请日：1943-06-23

Applicant: GEN MOTORS CORP

Inventor： CHAPMAN FREDERICK W

IPC: G01C17/28

CPC classification number: G01C17/28

公开(公告)号：US3593136A

公开(公告)日：1971-07-13

申请号：US3593136D

申请日：1969-09-11

Applicant: GEN MOTORS CORP

Inventor： CHAPMAN FREDERICK W ,  JAMERSON FRANK E ,  MUENCH NILS L

IPC: G01P3/481 ,  G01P3/36

CPC classification number: G01P3/481

Abstract: A rotating member speed sensor in which microwaves are beamed toward the rotating member so as to be reflected from a surface of the rotating member to a detector. The surface of the rotating member has grooves therein so as to amplitude modulate the beamed microwaves such that the reflected microwaves as sensed by the detector have a frequency of modulation corresponding to the speed of rotation of the rotating member.

公开(公告)号：US2861234A

公开(公告)日：1958-11-18

申请号：US41636754

申请日：1954-03-15

Applicant: GEN MOTORS CORP

Inventor： MARTIN EDWARD J ,  CHAPMAN FREDERICK W

IPC: B23Q35/123 ,  G05D3/18

CPC classification number: G05D3/18 ,  B23Q35/123 ,  Y10T409/30084 ,  Y10T409/303472