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US 4,784,004 AGranted
Web tension transducer
OwnerKenneth E. Ekolainventor
Life of this patent
Estimating the term…
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OwnerKenneth E. Ekolainventor
Estimating the term…
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.
A combined roll/tension transducer comprising:
A combined roll/tension transducer comprising:
Apparatus to be used in spaced combinations of two or more for supporting a roll on a shaft and providing a signal output reflecting tension on the roll at the points of support comprising:
Dependencies are inferred from the claim text.