John E Dannenmann

US Patent:

6577243, Jun 10, 2003

Filed:

Dec 14, 1999

Appl. No.:

09/460775

Inventors:

John Dannenmann - Portland OR
Ronald Helgerson - Gresham OR

Assignee:

Alan J. Brown - Chicago IL

International Classification:

G09F 933

US Classification:

34081545, 324 66, 439490, 370241

Abstract:

This specialized networking cable includes a plurality of twisted copper wire pairs encased in a flexible sheath for effectuating transmissive interconnections, electrically activated telltales affixed to both ends of the cable at positions adjacent to and connected to at least one of the copper wire pairs for providing an identification signal when activated; and apparatus for selectively applying a current to the cable that activates the telltales and does not interfere with the flow of data through the cable whereby the telltales may be activated on at least one of the twisted copper pairs. An LED and an electric power connector suitable for plug-in connection of a power pack are affixed to the cable adjacent each end such that both LEDs are lighted whenever power is applied to either of the electrical connectors. The attendant illumination of the LEDs readily indicates where both ends of the networking cable are located. The networking cable also may be used for convenient telephonic communication by service personnel.

US Patent:

6975242, Dec 13, 2005

Filed:

Feb 7, 2003

Appl. No.:

10/360882

Inventors:

John Dannenmann - Portland OR, US
Ronald Helgerson - Gresham OR, US

International Classification:

G09F009/33
G01R019/00
G08B005/22

US Classification:

34081545, 324 66, 439490, 370241, 709224

Abstract:

This specialized networking cable includes a plurality of twisted copper wire pairs encased in a flexible sheath for effectuating transmissive interconnections, electrically activated telltales affixed to both ends of the cable at positions adjacent to and connected to at least one of the copper wire pairs for providing an identification signal when activated; and means for selectively applying a current to the cable that activates the telltales and does not interfere with the flow of data through the cable whereby the telltales may be activated on at least one of the twisted copper pairs. An LED and an electric power connector suitable for plug-in connection of a power pack are affixed to the cable adjacent each end such that both LEDs are lighted whenever power is applied to either of the electrical connectors. The attendant illumination of the LEDs readily indicates where both ends of the networking cable are located. The networking cable also may be used for convenient telephonic communication by service personnel.

US Patent:

7327278, Feb 5, 2008

Filed:

Aug 19, 2005

Appl. No.:

11/207641

Inventors:

John Dannenmann - Portland OR, US
Ronald Helgerson - Boring OR, US

International Classification:

G09F 9/33
G01R 19/00

US Classification:

34081545, 34081547, 340596, 324 66, 439490, 370241

Abstract:

A method and a circuit is disclosed that facilitates identifying a remote end and optionally an intermediate location of an installed cable, such as a cable for carrying data, without the need to disconnect the cable. One or more circuits may be connected across two wires along the length of a cable. Each circuit includes a power connector, a switching circuit and an indicator, such as a light emitting diode (LED), connected across the two wires included in a cable. The circuit is configured such that the indicator in each circuit connected to the two wires is illuminated in responsive to a nominal DC voltage applied to the power connector in any circuits connected across the two wires without disrupting any data being carried thereby. In one embodiment of the invention, the circuit is directly into a cable connector. In an alternate embodiment of the invention, the circuit is configured to be retrofit in the field for use with existing cables.

US Patent:

20080136659, Jun 12, 2008

Filed:

Dec 14, 2007

Appl. No.:

11/957046

Inventors:

John Dannenmann - Portland OR, US
Ronald Helgerson - Boring OR, US

International Classification:

G08B 5/00

US Classification:

3408154

Abstract:

A method and a circuit is disclosed that facilitates identifying a remote end and optionally an intermediate location of an installed cable, such as a cable for carrying data, without the need to disconnect the cable. One or more circuits may be connected across two wires along the length of a cable. Each circuit includes a power connector, a switching circuit and an indicator, such as a light emitting diode (LED), connected across the two wires included in a cable. The circuit is configured such that the indicator in each circuit connected to the two wires is illuminated in responsive to a nominal DC voltage applied to the power connector in any circuits connected across the two wires without disrupting any data being carried thereby. In one embodiment of the invention, the circuit is directly into a cable connector. In an alternate embodiment of the invention, the circuit is configured to be retrofit in the field for use with existing cables.

US Patent:

56664532, Sep 9, 1997

Filed:

Jul 15, 1994

Appl. No.:

8/275973

Inventors:

John E. Dannenmann - Portland OR

International Classification:

G02B 644

US Classification:

385101

Abstract:

This specialized fiber optic jumper cable includes a composite cable with a glass fiber light guide for single or multi transmission mode, standard fiber optic connectors, electrically powered light emitting devices at the fiber optic connectors, and a pair of electrical conductors embedded in the cable, with one or more electrical power connectors for selectively applying an external electrical power source to the light emitting devices. One embodiment has a fiber optic connector at each end of the jumper. An LED and an electric power connector suitable for plug-in connection of a power pack are affixed to the cable adjacent each end such that both LEDs are lighted whenever power is applied to either of the electrical connectors. The attendant illumination of the LEDs provides an indication that the tracer system is activated and functioning properly and readily indicates where both ends of the same jumper cable are located. The electrical conductors also may be used for convenient telephonic communication by service personnel.

US Patent:

41408756, Feb 20, 1979

Filed:

Mar 27, 1978

Appl. No.:

5/890387

Inventors:

Bill E. Johnson - Portland OR
John E. Dannenmann - Portland OR

Assignee:

Bejed, Inc. - Portland OR

International Classification:

H04B 158
H04M 356

US Classification:

179 1CN

Abstract:

A 4-wire, 8-leg resistance bridge for interconnecting up to eight stations in a full conference system includes a two line input port and an associated two line output port for each of eight 4-wire telecommunication transmission lines. By providing a certain pattern of straight and rollover (reverse) connections between various pairs of the lines in the bridge, an essentially infinite return loss between the input and output ports of each leg is achieved. In addition, the bridge has a uniform natural loss between each leg's input port and the output ports of the other legs, and provides the proper terminating impedance for each of the interconnected transmission lines.

US Patent:

42861144, Aug 25, 1981

Filed:

Feb 12, 1980

Appl. No.:

6/120840

Inventors:

John E. Dannenmann - Portland OR
Bill E. Johnson - Portland OR

Assignee:

Bejed, Inc. - Portland OR

International Classification:

H04B 158
H04M 356

US Classification:

179 1CN

Abstract:

A family of improved 2-wire resistance bridges having from 3 to 14 ports, or legs, is provided for use in interconnecting a plurality of stations or devices in a private line circuit. The bridges include a resistance connected in shunt across the common end of each leg in the bridge, which permits the intrinsic port-to-port loss of the bridges to be adjusted to a desired value that essentially equals the difference between standard toll line input and output power levels, while at the same time maintaining the proper terminating impedance for each of the interconnected devices.

US Patent:

41158490, Sep 19, 1978

Filed:

Jan 27, 1977

Appl. No.:

5/762999

Inventors:

Bill E. Johnson - Portland OR
John E. Dannenmann - Portland OR

Assignee:

Bejed, Inc. - Portland OR

International Classification:

H04Q 364
H03K 1700

US Classification:

340147CV

Abstract:

An interface unit for interconnecting data terminals and data sets in a serial binary data communication system. The unit includes a plurality of standard multipin connectors, one for each data device being interconnected. Binary signals received at the data input pin of any connector are transmitted to the data output pins of each other connectors simultaneously. A return copy option is provided whereby signals received at a connector's input pin are also transmitted to its output pin. The disclosed device provides an essentially transparent interface between multiple data terminals and data sets at transmission rates up to at least 9600 baud.