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US 2015/0028244 A1Published application
Tubular diaphragm
AssigneeAcornVac, Inc.
InventorsCarlos J. Galeazzi, Neil Cletus Levers, Thomas Kent Zinn
Life of this patent
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Abstract
Embodiments include tubular diaphragm valves with a preformed mechanical closure point and optionally concave or convex convolution areas located near the flanges. These mechanical closure points and convolution areas give the embodiments an extended operational life, as compared to that of conventional cylindrical diaphragms.
Claims20
A tubular diaphragm comprising:
- a tubular diaphragm having a premolded shape which gives it an enhanced lifetime in use.
A tubular diaphragm comprising:
- a cylindrical tube manufactured of resilient elastomer with walls of approximately constant thickness throughout,
- an inlet flange and an outlet flange at the ends of the tube,
- the tube having an upper and a lower side,
- a preformed mechanical closure point in which the inner surfaces of the upper and lower sides are separated by a gap of not greater than ⅓ of the diameter of the tube,
- the mechanical closure point located approximately at the middle of the length of the tubular diaphragm and dividing it into an inlet and a outlet portion,
- preformed convolution areas on the upper and lower sides of at least one of the inlet and outlet portions,
- the convolution areas located adjacent to a flange and extending in length from to about 25% of the length of a side and, in width to about 33% of the width of a side,
- a convolution area having a concave or a convex form when viewed from the side of the tubular diaphragm.
5 more elements
A tubular diaphragm comprising:
- a cylindrical tube manufactured of resilient elastomer with walls of approximately constant thickness throughout,
- an inlet flange and an outlet flange at the ends of the tube,
- the tube having an upper and a lower side,
- a preformed mechanical closure point in which the inner surfaces of the upper and lower sides are separated by a gap of not greater than ⅓ of the diameter of the tube,
- the mechanical closure point located approximately at the middle of the length of the tubular diaphragm and dividing the diaphragm into an inlet and a outlet portion,
- preformed convolution areas on the upper and lower sides of the inlet portion,
- the convolution areas located adjacent to the inlet flange and extending in length from to about 25% of the length of the upper and lower sides and, in width to about 33% of the width of the upper and lower sides,
- the convolution areas having a concave form when viewed from the side of the tubular diaphragm,
- in side view the outlet portion upper side curves downward to the mechanical closure point, and
- in side view the outlet portion lower side curves upward to the mechanical closure point.
7 more elements
Dependencies are inferred from the claim text.