Albert G Cherveny

US Patent:

50639846, Nov 12, 1991

Filed:

Mar 13, 1991

Appl. No.:

7/668970

Inventors:

Albert G. Cherveny - Country Club Hills IL

International Classification:

E05F 1520

US Classification:

160 7

Abstract:

A solar heating device which indicates the proper window covering status for maximum energy conservation. A support structure (18) rests on window sill (16) and suspends two thermistors (22 and 24). One thermistor (22) is supported on the room side of drapery (12) and the other thermistor (24) is supported between drapery (12) and a window (14). When the net heat flow is inward from outside the room, thermistor (24) near window (14) will be warmer than room side thermistor (22). When this occurs, the temperature dependent resistances of thermistors (22 and 24), voltage divider resistances (30 and 32), and a comparator (36) turn on a light emitting diode (28). This indicates that drapery (12) should be opened to let solar radiation in to heat the room. Otherwise, drapery (12) should be closed to conserve the existing heat in the room.

US Patent:

49996126, Mar 12, 1991

Filed:

Jun 21, 1990

Appl. No.:

7/541376

Inventors:

Albert G. Cherveny - Country Club Hills IL

International Classification:

G08B 1314

US Classification:

340569

Abstract:

A wired mail delivery indicator having a physical construction which forces any size of mail across a groove (20). Slope on the left vertical wall of mailbox (10), slope of panel (14), and force of gravity cause mail to block light beam. The light beam is generated by a photodiode emitter (22) and detected by a photo detector (24). Mailbox and electronic circuitry (26) contains photodiode emitter (22), photo detector (24), current limiting resistor (42), and current amplifier transistors (46 and 48). House end electronic circuitry (28) contains power transformer (32), diode rectifier (34), and current sensor (38, 40, and 36). House/mailbox connecting wire (18) carries power and mail delivery information with two wires.