Dwyer Instruments, Inc.

Brian Lee Palmer

Michael A Popp

Daniel A Heuer

Ronald R Krueger

Stephen S Clark

Christina A Bentley

A switching device including a plurality of electrical switches, and an activation lever adapted to substantially simultaneously change the switches from a first state to a second state in response to a single physical input.

Manual reset pressure switch

A cover retention mechanism for releasably locking a cover to a base such as a gage housing. The cover retention mechanism includes a base lock having a receiver and a receptacle, and a cover lock having a latch attached to an end of a flexible arm. The latch is selectively movable between a retracted position wherein the latch engages the receptacle to prevent rotational movement of the cover with respect to the housing from the closed position toward an open position, and an extended position wherein the latch is removed from the receptacle and the cover is rotatable with respect to the housing from the closed position toward the open position.

Gage cover retention mechanism

An enclosure for a gage including a housing and cover. The cover includes one or more mounting lugs and the housing includes one or more mounting mechanisms. Each mounting mechanism includes an inclined ramp to facilitate removal of the cover from the housing by rotational movement of the cover with respect to the housing.

Gage enclosure with cover removal mechanism

A pressure gage adapted to provide a mechanical indication of a sensed pressure and to provide an electrical signal indicative of the sensed pressure. The pressure gage includes a housing having a first fluid pressure chamber, a second fluid pressure chamber, and flexible diaphragm separating the first fluid pressure chamber from the second fluid pressure chamber. A magnet is coupled to the diaphragm such that movement of the diaphragm causes a related movement of the magnet. A helix is located adjacent to the magnet and a pointer is attached to the helix for conjoint rotation with a helix about a rotational axis. A Hall effect sensor is also located adjacent the magnet. Movement of the magnet in response to movement of the diaphragm rotates the helix and the pointer to provide a mechanical indication of the pressure sensed by the diaphragm, and the movement of the magnet causes the Hall effect sensor to generate an electrical signal indicative of the pressure sensed by the diaphragm.

Pressure gage and switch

Combination pressure switch and gage

A shoe tester for use in environments where static electricity sparking must be eliminated between so called Electrostatic Dissipating (ESD) shoes and the floor, by personnel wearing a pair of such shoes, wherein the tester comprises a pair of metallic electrically conductive shoe plates secured together in spaced but side-by-side relation resting on such floor on insulated studs or the like, on which the person wearing the shoe stands with his shoes on the respective plates, and a 'plug-in' electronic circuit for measuring the resistance of such person and the shoes, including a scale and a pointer arm associated with the tester for actuation by the circuit when electrically energized by any grounded 115 volt alternating current outlet available for indicating acceptable and unacceptable shoe resistances, wherein the circuit includes an amplifier arrangement that permits the resistance measurements to be made to be in the range of 2,000 megohms.

Growing community of inventors

Michigan City, IN, United States of America

Brian Lee Palmer