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US 5,293,131 AGranted
Capacitive probe for bore measurement
AssigneeMeasurement Systems, Inc.
InventorsTimothy D. Semones, Carl E. Price
Life of this patent
Estimating the term…
Abstract
A capacitive probe for inspecting and measuring the diameter of a bore and thus the amount of wear in the bore formed of an electrically insulated housing containing two levels of conductive plates to measure distance between the plates and the rifling grooves and lands of a bore.
Claims4
A capacitive probe for measurement of a bore having a plurality of lands and grooves, comprising:
- an elongated, generally cylindrically shaped housing formed of an electrically insulating material comprising a proximal end for insertion into a bore;
- a plurality of electrically conductive plates affixed around the circumference of the housing, said plates alternating at one of two distances from the proximal end of the housing and being electrically isolated from each other;
- and
- means for connecting said plates to a data receiving means.
1 more element
A capacitive probe for measurement of a bore having a plurality of lands and grooves, comprising:
- an elongated, generally cylindrically shaped housing formed of an electrically insulating material comprising a proximal end for insertion into a bore;
- a plurality of electrically conductive plates affixed around the circumference of the housing, said plates being electrically isolated from each other and having a length, measured along the circumference of said housing, equal to a multiple of the combined length of one of said lands and one of said grooves;
- and
- means for connecting said plates to a data receiving means.
1 more element
Dependencies are inferred from the claim text.