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US 11,305,467 B2Granted
Toggled roll stack
AssigneeMega Machinery, Inc.
InventorsRichard Risch, Roger A. Blaney
Life of this patent
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Abstract
A roll stack for the production of plastic sheeting uses a pneumatically-operated toggle joint, instead of a hydraulic press, to precisely separate two rollers. The pneumatically-operated toggle joint allows the rollers to be more quickly and safely further separated from each other in case there is an emergency.
Claims8
A roll stack, comprising, in combination:
- (a) a first roller;
- (b) a second roller;
- (c) a slide supporting the first roller;
- (d) a machine screw actuator situated to slide the slide to separate the first roller and the second roller to form a separation of a desired thickness;
- (e) a pivot supporting the second roller;
- (f) a toggle situated to rotate the pivot, the toggle including a joint;
- (g) a moderate-pressure lifting device operatively connected to the joint;
- and
- (h) a stop situated to stop the joint when the joint attains an exterior angle of 180 to 190 degrees.
6 more elements
Dependencies are inferred from the claim text.