Electrical resistors – Strain gauge type – Dynamometer type
Patent
1975-12-08
1976-11-02
Albritton, C. L.
Electrical resistors
Strain gauge type
Dynamometer type
73 885SD, 177136, 177211, G01L 122
Patent
active
039900320
ABSTRACT:
The vehicle weighing system for a towed vehicle includes removable stub axles and a hitch rigidly connected to a load support. The hitch and one or more of the stub axles are gauged in an identical manner. Two active electrical strain gauges are placed in a hole formed in the supporting member to be gauged, such hole extending normal to the direction of the load. The hole is placed adjacent the end of the supporting member which is remote from the load support and the two gauges are oriented to reduce the moment sensitivity of the system to a minimum. The hitch is provided with additional compensating gauges which are not responsive to strain, and the axle and hitch gauges are connected to form a measuring bridge circuit. The gauging holes are sealed by end plugs, a printed circuit board, potting compound and a boot, all of which are flexible so as not to interfere with the weight measurement.
REFERENCES:
patent: 3194058 (1965-07-01), Kurkjian
patent: 3273382 (1966-09-01), Fonash
patent: 3602866 (1971-08-01), Saxl
patent: 3650340 (1972-03-01), Bradley
patent: 3669756 (1972-06-01), Bradley
Barrett Paul
Fish David H.
Keen Harry J.
Knodel Charles H.
Albritton C. L.
Colt Industries Operating Corporation
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