Web tension transducer apparatus
US4796474A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1987 |
| Grant date | Jan 10, 1989 |
| Priority date | — |
| Expiry date | Sep 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L5/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A moving web tension monitoring apparatus of easily fabricated, relatively inexpensive and easily assembled construction comprises a cantilever mounted strain beam element coupled at the flexurable end thereof through a self-aligning bearing to one end of the support shaft for the web supporting guide roll by a coupling member removably fastened to the shaft end and having a multiply axially split expandable tubular collar portion projecting endwise from the shaft end into the self-aligning bearing and expanded by a locking member forcibly inserted into the collar portion to expand and tightly lock it to the bearing. The self-aligning bearing preferably is of the roller bearing type having barrel shaped roller elements, and the strain beam means preferably is of the twin beam type having a pair of vertically spaced, parallel beam members formed by drilling out the core of a metal block member from which the sensor member of the transducer is fabricated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.