Pressure compensated flexible bellows
AssigneeQuadrastat Controls Corporation
InventorWarner R. Lauper
Life of this patent
Estimating the term…
Abstract
A pressure compensated flexible extensile and retractile elongated tubular bellows having opposite ends arranged to be sealingly connected with members operatively movable towards and away from each other, and in which the bellows has a wall structure formed to maintain a substantially constant internal pressure of entrapped fluid within the bellows, during extensile and retractile movements thereof.
Claims12
An internal pressure compensated flexible bellows for protecting a moving mechanism, comprising:
- a. an axially extendable and contractable elongated tubular member having flexible surrounding deformable wall sections and being formed at its opposite ends to respectively provide a turbular connector;
- b. self-contained means including said surrounding wall sections for maintaining a substantially constant internal pressure of fluid entrapped within said bellows by the closure of said tubular end connectors, during longitudinally extended and contracted movements of said bellows;
- and
- c. in which said wall comprises at least one section capable of radial expansion and contraction, and at least one other section capable of longitudinal extension and contraction.
A flexible bellows for enclosing and sealing a connection between elements supported for relative movements towards and away from each other, comprising:
- a. an axially expansile and retractile elongated tubular member of a flexible wall material, adapted to envelope the connection between said elements and to have its opposite ends respectively sealingly connected to the elements;
- b. said tubular member having at least one portion of its surrounding wall length formed to provide a plurality of longitudinally extending flutes, whereby the wall of said portion is permitted to radially expand, when the sealed ends of the bellows are moved towards each other, to substantially prevent a build up of pressure in the entrapped air or other fluid within the bellows.
A flexible bellows, comprising:
- a. an elongated tubular member of flexible material;
- b. said member having a pair of sections in end-to-end flow connected relation extending between end walls of said member, one of said sections having a wall structure enabling radial deformation movements for changing the enclosed volume thereof, and the other of said sections having a wall structure enabling longitudinal extension and contraction movements for changing the enclosed volume thereof;
- and
- c. tubular connection nipples respectively carried by said end walls.
Dependencies are inferred from the claim text.