Geometrical instruments – Gauge – Continuous gauging
Patent
1998-12-17
2000-11-14
Gibson, Randy W.
Geometrical instruments
Gauge
Continuous gauging
3350103, 3350104, 324229, 324231, 271262, 27126504, B65H 712, B65H 702, G01B 706, G01B 300
Patent
active
061452114
ABSTRACT:
A caliper gauge for moving sheet material such as paper which measures the thickness of the paper accommodates bumps or holes in the paper by providing at least one side of the caliper gauge with a long continuous smooth arm which because of its mounting in close proximity to the moving sheet, which is partially made possible by the use of air bearings for the upper and lower portions of the gauge, provides a gradual wedge-shaped opening which thus allows the transfer of the momentum of the bump or hole in the paper to gradually overcome the inertia of the measuring arm which is pushed away from the paper. The arm itself is made of a single piece of sapphire and is universally pivoted by the use of a polyimide material adhered to the top of the arm which gives the arm at least 2.degree. of dimensional freedom while still maintaining it aligned in the moving direction of the paper.
REFERENCES:
patent: 2517379 (1950-08-01), Backhouse
patent: 4134211 (1979-01-01), Typpo et al.
patent: 4791367 (1988-12-01), Typpo
patent: 4901445 (1990-02-01), Boissevain et al.
patent: 5074050 (1991-12-01), Williams et al.
patent: 5132619 (1992-07-01), Typpo
patent: 5297062 (1994-03-01), Cresson et al.
Typpo Pekka M.
Welch Harold
Gibson Randy W.
Impact Systems Inc.
Wright Jerry G.
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