Two-axis, self-nulling skin friction balance

Details Two-axis, self-nulling skin friction balance Two-axis, self-nulling skin friction balance

1985-02-28

1986-08-12

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to multiple loads or load components

73147, 7386261, G01L 516

Patent

active

046049037

ABSTRACT:
A skin friction force measuring device having a first pivoted 13 L-shaped arm 12, a second arm 16 pivoted 17 on one end of the L-shaped arm with a sensing element 20 attached to an end of the second arm. In response to skin friction forces on the sensing element 20 the arms are pivoted about the two pivots and two nulling means 23, 28 force the pivots back to their zero positions. The outputs of the two nulling means are indicative of the skin friction forces along two perpendicular axes, x and y, in the plane of the sensing element.

REFERENCES:
patent: 3224263 (1965-12-01), Rogallo
patent: 3304775 (1967-02-01), Kistler
patent: 3415116 (1968-12-01), Knechtel
patent: 3490059 (1970-01-01), Paulsen et al.
patent: 3699811 (1972-10-01), Maiden et al.
patent: 4059011 (1977-11-01), Reiss
patent: 4107986 (1978-08-01), Jones
patent: 4112752 (1978-09-01), Hafner et al.
patent: 4240290 (1980-12-01), Montoya et al.
Owen et al., "A Force-Balance Shear Force Instrument", ISA Transactions, vol. 16, No. 3, 1977, pp. 61-66.

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