Multi-roller dynamometer and test method

Details Multi-roller dynamometer and test method Multi-roller dynamometer and test method

1988-12-20

1990-04-10

Ruehl, Charles A.

Measuring and testing

Dynamometers

Responsive to force

G01L 510

Patent

active

049149601

ABSTRACT:
In a dynamometer, a multi-roller sheave is positioned between a cable, or other elongate element, supply and the cable destination so that the cable rolls over the multi-roller sheave. The center axis of the cable changes direction from one side of the multi-roller sheave to the other side. Tension in the cable causes the multi-roller sheave to move and consequently stress a strain gauge. A signal produced by the strain gauge is amplified into a signal that accurately indicates the tension in the cable. Friction and wear between the cable and the dynamometer are eliminated for all practical purposes. Very accurate readings of tension are obtained.

REFERENCES:
patent: 2444245 (1948-06-01), Campbell
patent: 3204454 (1965-09-01), Friman
patent: 3526129 (1967-12-01), Anderson
patent: 3801071 (1974-04-01), Barron
patent: 4213596 (1980-07-01), Inoue et al.
patent: 4301995 (1981-11-01), Niskin
patent: 4417718 (1983-11-01), Niskin
patent: 4492363 (1985-01-01), Niskin
patent: 4690380 (1987-09-01), Niskin
patent: 4708321 (1987-11-01), Niskin
R. D. Ehrbar, "A Cable Laying Facility", BSTJ, Jul. 1964, pp. 1367-1372.
O. D. Grismore, "Cable and Repeater Handling System", BSTJ, Jul. 1964, pp. 1373-1394.
R. W. Gretter, "Cable Payout System", BSTJ, Jul. 1964, pp. 1395-1434.
"Pressure and Strain Measurement Handbook and Encyclopedia", OMEGA Engineering, Inc., 1985, pp. F-3, F-4, F-11, F-12, E-36, E-37, E-43 and E-44.

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