Coded data generation or conversion – Digital pattern reading type converter – Having combined coding pattern
Reexamination Certificate
2006-08-15
2006-08-15
Nguyen, Linh Van (Department: 2819)
Coded data generation or conversion
Digital pattern reading type converter
Having combined coding pattern
C341S015000, C341S016000
Reexamination Certificate
active
07091883
ABSTRACT:
A transducer, a method and a coding pattern for determining a kinematic measurable variable are disclosed. A transducer comprises a first device part which is moveable in or through a corresponding device for oil or natural gas production and a second device part which is stationary relative to said first device part. To detect both the directions of movement and the respective position in a simple constructional and inexpensive way without the need for return movement up to ends of the range of movement, the first and/or second device part comprises a coding pattern which is changing along a direction of movement and of which position-specific patterns can be scanned by a scanning means which is arranged on the respective other device part. By scanning such a specific coding pattern during mutual relative movement of said objects or device parts a corresponding scanning signal can then be converted by an evaluation unit into a kinematic measurable variable. The corresponding coding pattern comprises a plurality of single patterns wherein neighboring single patterns differ from one another by at least one characteristic feature and/or said single pattern has at least one characteristic feature that is changing in the direction of movement.
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Biester Klaus
Kunow Peter
Cameron International Corporation
Conley & Rose, P.C.
Nguyen Linh Van
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