Equal lift self-loading controlled deflection roll and method fo

Details Equal lift self-loading controlled deflection roll and method fo Equal lift self-loading controlled deflection roll and method fo

1994-08-15

1995-12-12

Lacey, David L.

Paper making and fiber liberation

Apparatus

Apparatus repair, cleaning or conditioning

162281, 162300, 162352, 492 7, 492 20, D21F 308, B21B 2700

Patent

active

054746566

ABSTRACT:
A self-loading controlled deflection roll has movable shoes disposed inside the roll shell, at the opposite ends and at the center of a central shaft, for displacing the external surface of the roll shell toward and away from a mating roll forming a nip with the controlled deflection roll. In order to ensure that both ends of the controlled deflection roll shell move evenly in a radial direction into nipping engagement with the mating roll, and to also ensure that the ends retract evenly away from nip engagement, a control system and method are provided for automatically adjusting the flow of hydraulic fluid, such as oil, which is used to displace the shoes at the opposite end of the central shaft. The control system and method make use of a mechanical linkage which is operated by movement responsive displacement of the shoes, the linkage positioning relatively movable parts of a control valve so as to increase or decrease the flow of hydraulic fluid to the respective end shoes, thereby ensuring that the end shoes move uniformly relative to each other.

REFERENCES:
patent: 3997952 (1976-12-01), Lehmann et al.
patent: 4334344 (1982-06-01), Biondetti
patent: 4827584 (1989-05-01), Pav et al.
patent: 4850088 (1989-07-01), Speak
patent: 4891874 (1990-01-01), Roerig et al.
patent: 4970767 (1990-11-01), Link
patent: 5060357 (1991-10-01), Roerig et al.
patent: 5111563 (1992-05-01), Brown et al.
patent: 5127141 (1992-07-01), Roerig et al.
patent: 5193258 (1993-03-01), Brown

Affiliated with

Also associated with

Rating

Equal lift self-loading controlled deflection roll and method fo does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Equal lift self-loading controlled deflection roll and method fo, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equal lift self-loading controlled deflection roll and method fo will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1357684