Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2003-06-25
2008-08-05
Lefkowitz, Edward (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
C073S488000, C073S506000, C073S507000, C073S509000, C073S514390
Reexamination Certificate
active
07406883
ABSTRACT:
The invention concerns a device for measuring the speed and direction of rotation of an object (3) near to which it is placed. It comprises:a magnetic detection device (2) that delivers, in response to a rotation of the object (3) generating a magnetic field variation, signals representative of its speed and its direction of rotation,a conductor (4) intended to be connected to a power source to supply current to the magnetic detection device (2) at least,current receptor means (6) placed between the magnetic detection device (2) and the conductor (4) that create, from signals coming from said magnetic detection device (2), a modulation of the current (Iout) flowing in the conductor (4), said modulated current (Iout) reflecting both the speed and the direction of rotation of the object (3).Application particularly in the oil industry.
REFERENCES:
patent: 3455162 (1969-07-01), Michener et al.
patent: 3636767 (1972-01-01), Duffy
patent: 5715162 (1998-02-01), Daigle
patent: 6282954 (2001-09-01), Ott et al.
patent: 6492804 (2002-12-01), Tsuge et al.
patent: 6508116 (2003-01-01), Adachi et al.
patent: 6542847 (2003-04-01), Lohberg et al.
patent: 6630821 (2003-10-01), Shinjo et al.
patent: 6859000 (2005-02-01), Kessler et al.
patent: 6881507 (2005-04-01), Milacic
patent: 2001/0002791 (2001-06-01), Tsuge et al.
patent: 2002/0149275 (2002-10-01), Gauthier et al.
patent: 19618367 (1997-02-01), None
patent: 10060621 (2001-06-01), None
patent: 1074843 (2001-02-01), None
patent: WO9949322 (1999-09-01), None
Faur Marian
Parmentier Bernard
Sellin Jacques
Fanseco Darla
Kirkland, III Freddie
Kurka James
Lefkowitz Edward
Schlumberger Technology Corporation
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