Pressure control device for a pressure roller

Details Pressure control device for a pressure roller Pressure control device for a pressure roller

1991-12-18

1994-06-07

Jones, W. Gary

Coating apparatus

Program, cyclic, or time control

Sequential energization of plural operations

118651, 118231, 118247, 355277, G03G 1512, B05C 1302, B05C 102

Patent

active

053186311

ABSTRACT:
A pressure control device for controlling the application of pressure provided by a pressure roller to a pressing object, which includes a support member for pivotally supporting the pressure roller, a locking member coupled with the support member, an eccentric cam switchable between a locked state and an unlocked state by the locking member, a clutch for rotating the eccentric cam by a driving means connected thereto, and a solenoid for pushing or pulling the joint portion of the support member and the locking member so as to allow both members to move pivotally. When the solenoid is turned on and the locking of the eccentric cam is released from the locking member, the clutch rotates the eccentric cam thereby moving the solenoid. The pulling force of the solenoid pivotally move the support member strongly enough to allow the pressure roller to press the pressing object. When the solenoid is turned off at this state, the pressure roller is moved downward away from the pressing object by weight.

REFERENCES:
patent: 3754819 (1973-08-01), Braun
patent: 3866572 (1975-02-01), Gundlach
patent: 3867026 (1975-02-01), Ogawa
patent: 3901186 (1975-08-01), Hoffman et al.
patent: 4392739 (1983-04-01), Brown et al.

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