Inflatable bladder type of screen tensioning device

Details Inflatable bladder type of screen tensioning device Inflatable bladder type of screen tensioning device

1992-09-14

1993-07-06

Valenza, Joseph E.

Classifying, separating, and assorting solids

Sifting

Elements

209405, B07B 149

Patent

active

052246060

ABSTRACT:
In combination a unique design of inflatable bladder screen tensioning device, a plurality of securing pins, and a plurality of cotters. The inflatable bladder is positioned between a first elongate plate and a second elongate plate such that as the bladder is inflated the first elongate plate and the second elongate plate are forced apart. A plurality of openings extend through the first elongate plate, the inflatable bladder and the second elongate plate. The securing pins are of such a length that they can extend transversely through a screen engaging clamp, a screen retaining frame and thereafter through the openings in the first elongate plate, the inflatable bladder and the second elongate plate. Each of the securing pins is comprised of a shaft having a first end and a second end. A head is positioned at the first end such that the head engages screen engaging clamp. A transverse opening is positioned at the second end. The plurality of cotters each have a body portion which is adapted to extend through the transverse openings in the securing pins, and a head portion which will not pass through the transverse opening.

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patent: 4744898 (1988-05-01), Bailey
patent: 4816153 (1989-03-01), Ando et al.

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