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US 8,264,315 B2Granted
Linear variable differential transformers
AssigneeHoneywell International Inc.
InventorsRichard Fox, Gene Holden, Robert Franconi
Life of this patent
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Abstract
Linear variable differential transformers include a core comprising a non-ferromagnetic material and a ferromagnetic material, and a coil assembly including an axial bore within which the core is disposed and through which the core axially translates.
Claims9
A linear variable differential transformer, comprising:
- a core comprising a series of joined segments that comprises a first non-ferromagnetic segment, a second non-ferromagnetic segment, and a ferromagnetic segment disposed between the first and the second non-ferromagnetic segments;
- and
- a coil assembly including an axial bore within which the core is disposed and through which the core axially translates.
A linear variable differential transformer, comprising:
- a housing including an axial bore;
- a primary coil disposed in the housing;
- a secondary coil disposed in the housing and including a first winding and a second winding, the first winding and the second winding disposed at least adjacent to opposing ends of the primary coil;
- and
- a core,
- wherein the core has a difference/sum ratio in a range of 0±0.5, and
- wherein the core comprises one of the following:
- a series of joined segments comprising a first non-ferromagnetic segment, a second non-ferromagnetic segment, and a ferromagnetic segment disposed between the first and the second non-ferromagnetic segments, or
- a series of joined segments comprising a first ferromagnetic segment, a second ferromagnetic segment, and a non-ferromagnetic segment disposed between the first and the second ferromagnetic segments.
6 more elements
A linear variable differential transformer, comprising:
- a core comprising a series of joined segments comprising a first ferromagnetic segment, a second ferromagnetic segment, and a non-ferromagnetic segment disposed between the first and the second ferromagnetic segments;
- and
- a coil assembly including an axial bore within which the core is disposed and through which the core axially translates.
Dependencies are inferred from the claim text.