Measuring and testing – Speed – velocity – or acceleration – Comparison to a fixed standard – master or reference speed...
Patent
1975-10-31
1978-02-21
Gill, James J.
Measuring and testing
Speed, velocity, or acceleration
Comparison to a fixed standard, master or reference speed...
G01P 308
Patent
active
040745791
ABSTRACT:
A device for detecting the difference in the rotary speeds of two rotating shafts comprises a bearing for coaxially mounting the shafts for rotation in opposite directions, a low power precision stepping motor imparting a programmed speed of rotation to one of the shafts, a gearing interconnecting the shafts and displaceable in response to a change in the relative angular position of the two rotation shafts, and a sensor detecting displacement of the gearing in response to the change.
REFERENCES:
patent: 1709673 (1929-04-01), Kintzing
patent: 1749569 (1930-03-01), Florez
patent: 2779582 (1957-01-01), Hopper et al.
patent: 2935311 (1960-05-01), Kabelitz
patent: 3139006 (1964-06-01), Budzich
patent: 3683685 (1972-08-01), Viegelahn
patent: 3769533 (1973-10-01), Pauwels
EL.GE. Apparecchiature Elettroniche Industriali S.p.A.
Gill James J.
Kelman Kurt
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