John M Weber

US Patent:

40456366, Aug 30, 1977

Filed:

Jan 28, 1976

Appl. No.:

5/653226

Inventors:

Alan C. Yoder - Fort Wayne IN
John E. Weber - Fort Wayne IN

Assignee:

Bowmar Instrument Corporation - Fort Wayne IN

International Classification:

H01H 900
H05K 100

US Classification:

200292

Abstract:

A printed wiring board for a keyboard switch assembly for electronic apparatus, such as electronic calculators, comprising a self-supporting insulative board having a plurality of elongated connectors on one surface thereof, at least some of the conductors having terminal portions for cooperating with switch elements. A layer of insulating material covers the one surface of the board and the conductors excluding the terminal portions. Each of the terminal portions has a coating of conductive ink thereon and a jumper element also formed of conductive ink is coated on the insulating layer crossing at least one of the conductors embedded therein and joining at least two of the terminal portion coatings. The conductive ink is preferably a noble-metal filled resin compound, such as silver epoxy, screen printed onto the insulating layer and terminal portions.

US Patent:

42064503, Jun 3, 1980

Filed:

Dec 26, 1974

Appl. No.:

5/536385

Inventors:

Phillip L. Harden - Roanoke IN
William E. Hunkler - Fort Wayne IN
John L. Schnieders - Markle IN
John E. Weber - Fort Wayne IN

Assignee:

Bowmar Instrument Corporation - Fort Wayne IN

International Classification:

G08B 1900
G08B 1300
G08B 2900
G08B 300

US Classification:

340521

Abstract:

A security system which includes closed loop fire detection circuitry, having a continuous monitor of the pyrogenic sensors, closed loop intrusion detection circuitry, a multiple tone audible alarm generator, a coded keyboard digital electronic lock circuit, and a fail-safe alternating current, direct current power supply which includes a battery, battery charging circuit, and a system testing facility. The audible alarm circuitry includes a modulated tone frequency generator and a modulating circuit operable between a plurality of states in response to different alarm conditions. The fire and intrusion circuits include filter circuits to prevent spurious operation, and feedback latching circuits for generating continuous alarm signals in response to a breach of the system. The entire circuit is fabricated with solid state electronic components including micro-electronic circuitry. Further, test circuits are provided with visual and audible signals to indicate status of intrusion sensors, pyrogenic sensors, and battery condition.

US Patent:

40567010, Nov 1, 1977

Filed:

Jul 8, 1976

Appl. No.:

5/703526

Inventors:

John E. Weber - Fort Wayne IN

Assignee:

Bowmar Instrument Corporation - Fort Wayne IN

International Classification:

H01H 312

US Classification:

200314

Abstract:

A low profile, lighted, push button switch including a printed wiring board having conductors terminating in switch contacts thereon. A first insulative member abuts the wiring board covering the conductors thereon and has an opening therein which exposes the switch contacts. A resilient switch element is positioned in the opening in the first insulative member cooperating with the switch contacts and actuatable between open and closed positions in response to force applied thereto. A thin sheet of insulating material covers the first insulative member extending over the opening and the switch element therein. A second insulative member abuts the insulating sheet and has an opening therein aligned with the opening in the first insulative member. A switch actuating member is positioned in the opening in the second insulative member. Another printed wiring board abuts the second insulative member and has at least one opening therein communicating with the opening in the second insulative member.