Calvin Rickie Nelson

US Patent:

6418558, Jul 9, 2002

Filed:

Jul 23, 1997

Appl. No.:

08/899222

Inventors:

Harold A. Roberts - Eden Prairie MN
David S. Russell - St. Paul MN
Calvin G. Nelson - Excelsior MN
Jeffrey Brede - Eden Prairie MN
Joseph F. Chiappetta - Trumbull CT
Niranjan R. Samant - Middletown CT

Assignee:

ADC Telecommunications, Inc. - Minnetonka MN

International Classification:

H04N 714

US Classification:

725129, 725106, 725128, 340493

Abstract:

A video and telephony signal distribution network is provided. The network includes a head end for transmitting to a plurality of remote units. The network further includes at least one optical/electrical converter unit that transmits to the remote units over at least two coaxial cables coupled to a common optical/electrical converter unit. Each remote unit transmits upstream electrical data signals over its associated coaxial cable to the optical/electrical converter unit using a common bandwidth. The optical/electrical converter unit converts and frequency shifts the upstream electrical data signals from at least one remote unit to form an optical upstream data signal for transmittal to the head end such that the frequency spectrum used for the upstream communications is simultaneously used on each of the coaxial cables of to optical/electrical converter unit.

US Patent:

43639410, Dec 14, 1982

Filed:

Jun 26, 1981

Appl. No.:

6/277677

Inventors:

Calvin G. Nelson - Brooklyn Park MN

Assignee:

Magnetic Controls Company - Minneapolis MN

International Classification:

H01H 900

US Classification:

200 1R

Abstract:

A patch or access module usable with an insertable patch plug having a plurality of electrical contact elements. The patch or access module includes a circuit board, a first electrical circuit electrically connected with a first point on the circuit board, a second electrical circuit electrically connected with the second point on the circuit board and switch contact means for selectively making electrical connection between the first point and the second point and for making electrical connection between the first point and the electrical contact elements of the patch plug upon insertion of the patch plug into the patch or access module. The switch contact mechanism includes a first portion electrically engaged with the first point, a second portion adapted for selective electrical engagement with the second point and a third portion adapted for limited movement relative to the circuit board for electrical engagement with the electrical contact element of the patch plug when the plug is inserted into the patch module.

US Patent:

50371762, Aug 6, 1991

Filed:

Jan 19, 1990

Appl. No.:

7/467748

Inventors:

Harold A. Roberts - Eden Prairie MN
Robert A. Eno - Plymouth MN
Calvin G. Nelson - Shorewood MN
David J. Emmons - Richfield MN
Liang-Ju Lu - Richfield MN
Robert Ziebol - Blaine MN

Assignee:

ADC Telecommunications, Inc. - Minneapolis MN

International Classification:

G02B 636

US Classification:

385 16

Abstract:

An optical switch is disclosed including a first and second array of optical fibers held in axial alignment and relatively rotatable about an axis of rotation to effect optical coupling and decoupling of fibers of the opposing arrays. Terminal ends of fibers of the first array are set at a predetermined non-orthogonal angle relative to the axis of rotation. Terminal ends of fibers of the second array are set at an angle which is complementary to the non-orthogonal angle.