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US 4,305,299 AGranted
Micro-creepmeter
OwnerShosei Seratainventor
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OwnerShosei Seratainventor
Estimating the term…
A device for determining microscopic motion in static creep and dynamic oscillation between two objects by measuring relative displacement between the two objects connected by a metal wire includes a linear variable differential transformer disposed within a cylindrical housing. One end of the housing includes an extendable tubular member which is joined to one of the objects, The other end of the housing includes a fitting for securing a wire extending to the other object. The core of the linear variable displacement transformer is supported by a pair of spider diaphragms disposed on opposite sides of the transformer. The tubular member is connected by an extension spring to one of the diaphragms, while the wire retaining fitting is connected by a universal joint to the other diaphragm. The diaphragms provide high axial compliance so that the core may undergo microscopic displacement in concert with the displacement between the two objects.
A device for quickly and accurately determining microscopic motion in both static creep and dynamic oscillation by accurately measuring relative displacement between two objects comprising a housing, a linear variable differential transformer secured within said housing and including a translatable core, a first member translatably extendable from said housing, first anchor means for securing said extendable member to one of said objects, elastic tensioning means secured between said extendable member and one end of said core, means for releasably securing said housing to said extendable member for movement in concert therewith, and second anchoring means for securing the other end of said core to the other of said objects.
Dependencies are inferred from the claim text.