Rotary to linear LVDT system

Details Rotary to linear LVDT system Rotary to linear LVDT system

2005-06-28

2005-06-28

Snow, Walter E. (Department: 2862)

Electricity: measuring and testing

Magnetic

Displacement

C324S207240, C074S089000

Reexamination Certificate

active

06911819

ABSTRACT:
A rotary input for a linear variable differential transformer (LVDT) system connects to a gear reduction system. The gear reduction produces a reduced rotary output in a rotary output member. The output member is threaded, and a nut is threaded onto the output member. Therefore, the nut translates as the rotary output member rotates. The armatures of one or more LVDTs attach to the nut. Each armature contains a magnetic member. As the nut translates along the threaded output member, the nut translates the armatures. Armature movement moves the magnetic members to create a differential voltage between the secondary coils of the LVDT.

REFERENCES:
patent: 2445445 (1948-07-01), Rights et al.
patent: 4777436 (1988-10-01), Fiori, Jr.
patent: 5006797 (1991-04-01), Smith
patent: 5129273 (1992-07-01), Fukui et al.
patent: 5289120 (1994-02-01), Moretti et al.
patent: 5469053 (1995-11-01), Laughlin
patent: 5547290 (1996-08-01), Ouchi et al.

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