Measuring and testing – Dynamometers – Responsive to force
Patent
1987-08-20
1988-11-15
Ruehl, Charles A.
Measuring and testing
Dynamometers
Responsive to force
G01L 510
Patent
active
047840048
ABSTRACT:
A combined roll/tension transducer for supporting a moving web while sensing the tension thereof. There is a rigid support shaft and a pair of roll support and signal generating assemblies disposed adjacent the respective ends of the shaft. The assemblies each comprise a collar non-movingly attached to the shaft; a pair of resiliently bendable opposed beams carried by the collar and extending therefrom parallel to opposite sides of the shaft; a cylindrical support member disposed over the shaft and carried by the pair of beams, the support member having an axial bore with the shaft passing therethrough which is a clearance fit to the shaft; a ball bearing fit onto the outer periphery of the support member; and, a plurality of strain gauges disposed on the upper and lower surfaces of respective ones of the pair of beams to provide signals at outputs thereof indicating the strain in each of the strain gauges. A cylindrical roll is disposed over and between the ball bearings to be supported for rolling motion thereby.
In the preferred embodiment, the collars are disposed between the cylindrical support members. The shaft is shown supported on both ends or cantilevered from a support on onlyone end.
REFERENCES:
patent: 4015468 (1977-04-01), Simon
patent: 4281539 (1981-08-01), Keller
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