WILLIAM FREDRICK STELTER
Pilots at Savanna Ct, Green Oaks, IL

2014004, Feb 20, 2014

Jul 16, 2013

13/943702

William Stelter - Lake Bluff IL, US

A62C 37/00, F04B 49/06

169 13, 417 1

A fire suppression and control system includes a unique fire pump controller which uses advanced technologies in a manner consistent with the need for high reliability in the fire protection industry. A preferred controller includes three PIC chips including a control PIC for controlling operation of the water pump, a power monitor PIC for receiving all voltage and current inputs to the controller, and a data recorder PIC for collection and storage of data relevant to the system. The controller may also include an electronically coupled HMI which queries the controller for information to display, wherein the HMI does not pass information between components of the controller and is capable of being damaged without stopping or preventing operation of the controller, and an isolation scheme for isolating the controller from incoming energy transients, such as lightning, the isolation scheme comprising a relay and opto-isolators to drive the relay and increase the isolation by a factor of at least two over the relay alone.

5982274, Nov 9, 1999

May 16, 1995

8/442222

William F. Stelter - Libertyville IL
James S. Nasby - Skokie IL

Master Control Systems, Inc. - Lake Bluff IL

G08B 1302

34028605

A paperless recorder for recording pressure and alarm condition data from a fire controller for a fire pump control system. The fire pump is connected a pipe network which has a pressure sensor for sensing pipe pressure. The recorder is connected to the pressure sensor and checks for pressure changes. When a pressure change is detected, it is stored in an electronic memory. Pressure readings are also periodically stored in the electronic memory. The recorder may also monitor alarm voltages and alarm contacts which may also be stored in the electronic memory. The stored data may be transmitted to a computer via modem or port connection for further analysis.

4951024, Aug 21, 1990

Dec 27, 1989

7/457376

William F. Stelter - Libertyville IL
James S. Nasby - Skokie IL

Master Control Systems, Inc. - Lake Bluff IL

H01F 2900, H01F 2726

336 5

A three phase saturating reactor is constructed of thin E and I shaped laminations that are interleaved to minimize the effects of air gaps. The laminations include apertures that are in alignment and four identical frame members are secured thereto by means of insulated bolts that pass through the apertures in the core and corresponding holes in the frame members. The taps of the electrical phase coils that encircle the legs of the core are of heavy conductors that are self-supporting. The saturating reactor design is such that the core is driven into saturation at a small percentage of the rated current of the reactor to rapidly develop a back EMF when in a motor starting circuit.

5729698, Mar 17, 1998

May 16, 1995

8/441862

William F. Stelter - Libertyville IL

Master Control Systems, Inc. - Lake Bluff IL

G06F 1522

395226

A method for compiling data and printing a submittal for fire pump system installations is disclosed. The program is designed for use on a computer with a laser printer. A master file having drawings and data relating to fire pump, driver, and control systems is stored on the computer. A user may select equipment based on desired characteristics and compose and print a submittal having data on the selected equipment as well as the related drawings. The program also allows a user to add drawings or modify the data in the master file.

5142213, Aug 25, 1992

Apr 16, 1991

7/686185

William F. Stelter - Libertyville IL

Master Control Systems, Inc. - Lake Bluff IL

H02P 126

318771

A wye-delta open transition motor starter provided with a leading phase monitor and a method of using the same such that transient currents during the open transition are limited to acceptable magnitudes.