Non-contact thrust force sensor assembly

Details Non-contact thrust force sensor assembly Non-contact thrust force sensor assembly

2005-10-04

2005-10-04

Noori, M. (Department: 2855)

Measuring and testing

Dynamometers

Responsive to torque

C073S862490

Reexamination Certificate

active

06951145

ABSTRACT:
A non-contact sensor assembly measures an in-line driving thrust force that is applied to a rotating shaft. The sensor assembly includes a hollow torque-shaft with a magnetoelastic element and a thrust shaft that is inserted within the hollow torque-shaft. Keys are formed on thrust shaft and keyways are formed on the hollow torque-shaft. The keys are received within the keyways to lock the thrust shaft and hollow torque-shaft together but still permit a small amount of axial movement between the shafts. Helical spline recesses are formed on the thrust shaft and corresponding spline projections are formed on the hollow torque-shaft. The projections are received within the recesses to translate the thrust force into a twisting force. A magnetometer cooperates with the magnetoelastic element to measure the amount of twisting force and determine the amount of thrust force.

REFERENCES:
patent: 4182168 (1980-01-01), Desch
patent: 4823617 (1989-04-01), Hase et al.
patent: 5889215 (1999-03-01), Kilmartin
patent: 6330833 (2001-12-01), Opie
patent: 6516508 (2003-02-01), Gandarillas
patent: 6598491 (2003-07-01), Opie

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