Bladder assembly for control of fluid flow and method of its fab

Details Bladder assembly for control of fluid flow and method of its fab Bladder assembly for control of fluid flow and method of its fab

1993-02-09

1994-01-11

Chambers, A. Michael

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

251212, 137907, 236 494, F16K 300

Patent

active

052773973

ABSTRACT:
A bladder type damper assembly formed of a flexible envelope of fluid impermeable plastic material incorporating an insert made of two segments of rigid sheet material joined in hinged relation at one edge and moveable between a flat association and a preselected open angular orientation. The fluid conformable portion of the bladder envelope between the open edges of the insert segments provides a folding region in the form of a valley configuration provided by seaming the two overlapping layers of the bladder between the two insert segments when folded in flat relation. The seam is formed by applying heat and pressure to the two bladder layers through an opening in one or both of the insert segments with separator material appropriately placed.

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