Maintenance of linearity of support beam

Details Maintenance of linearity of support beam Maintenance of linearity of support beam

1989-08-15

1992-05-26

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219497, 219209, 219201, 73849, H05B 102

Patent

active

051170930

ABSTRACT:
A system for controlling deflections of an elongate body transverse to a longitudinal axis of the body, the system including: a sensor mounted on the body for producing an output signal when the body experiences a deflection in at least one direction transverse to its axis; heating and/or cooling elements thermally coupled to the body at a location for heating or cooling the body in a manner to thermally deflect the body in a direction transverse to the longitudinal axis; and a control unit, connected between the sensor and the heating or cooling elements, responsive to the output signal produced by the sensor.

REFERENCES:
patent: 3289526 (1966-12-01), Tuppeny, Jr. et al.
patent: 4125845 (1978-11-01), Stevenson, Jr.
patent: 4671659 (1987-06-01), Rempt et al.
patent: 4719830 (1988-01-01), Kawada et al.
patent: 4775214 (1988-10-01), Johnson
patent: 4888463 (1989-12-01), Middlebrook
patent: 4962669 (1990-10-01), Gernhart et al.

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