Otto Engineering, Inc.

Baxter International Inc.

Thomas J Roeser

Brian D Zdeb

John O Roeser

Michael J Crawford

William E Younkes

A sealed rocker switch includes a button having a lever. A coil spring coaxial with the lever and enclosing a portion of the lever forces a plunger against an actuator that rocks to place a spring blade in contact with blade contacts to operate the switch. The blade contacts are snapped into the case of the switch to maintain the blade contacts in a desired position, and are potted with a potting compound to make a seal. The actuator may be shaped in one of several ways to provide maintained contact, momentary contact, or a combination of these. A groove in the lever supports an O-ring against the case to seal the switch at the button end.

Rocker switch

A toggle switch includes a toggle lever with a spherical portion that is held against a partially spherical surface by a retaining ring or a pin to permit the toggle lever to swivel. A coil spring coaxial with the toggle lever and enclosing a portion of the lever forces a plunger against an actuator that rocks to place a blade in contact with a terminal to operate the switch. Terminals are molded into the case of the switch to maintain the terminals in a desired position. The actuator may be shaped in one of several ways to provide maintained contact, momentary contact, or a combination of these. Electrical contacts are formed by placing spherical balls or similar shapes made of a contact material into holes in the terminals and then forming the balls or other shapes to produce a contact surface.

Toggle switch

A cartridge for introducing a beneficial agent into a medical fluid conduit is disclosed. The cartridge includes a pierceable stopper having a hollow, open ended protrusion extending into the cartridge chamber and having the beneficial agent retained therein by a liquid pervious barrier. The hollow, open ended protrusion creates a directed flow path within the cartridge.

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Barrington, IL, United States of America

Thomas J Roeser