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US 6,402,486 B1Granted
Free-diaphragm pump
AssigneeTrebor International, Inc.
InventorsRicky B. Steck, Michael R. Dunn, Troy Orr, Matthew J. Stillings, David Kingsbury
Life of this patent
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AssigneeTrebor International, Inc.
InventorsRicky B. Steck, Michael R. Dunn, Troy Orr, Matthew J. Stillings, David Kingsbury
Estimating the term…
A pump for ultra-pure fluids comprises a flexible diaphragm separating a fluid chamber from an air chamber. The diaphragm creates an airtight seal between the fluid chamber and the air chamber when a self-centering and trapezoidal shaped wedge compressively forces the diaphragm into a trapezoidal shaped perimeter cavity surrounding the chambers. Any leak from the fluid chamber into the air chamber is detected by a fiber optic system comprising two optical fibers that are disposed at an angle that is calculated to enable light to pass between the fibers only in the presence of a liquid having a predetermined index of refraction. The fiber optic system can also be used to determine the stroke of the pump by disposing the fiber optic lines at an angle calculated to reflect light off of the oscillating diaphragm when the diaphragm arrives at a predetermined location.
A fiber optic system for detecting the stroke of a pump having a diaphragm that is driven into and out of a sealed chamber of the pump, the fiber optic system comprising:
A seal system for sealing a first chamber from a second chamber of a pump having a head and a frame and which is configured for pumping ultra-pure fluids, the seal system comprising:
A fiber optic system for detecting a leak of a liquid into a sealed chamber of a pump comprising:
Dependencies are inferred from the claim text.