Patents by Inventor James Krabec
James Krabec has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6912777Abstract: A helical corrugated coaxial cable possesses low cost of manufacture comparable to that of braided shield coaxial cable, electrical performance comparable to solid tubular shielded cable, flexibility of helical and annular corrugated cable, and fluid blockage comparable to annular shielded cable. The cable has an inner conductor surrounded by a foam dielectric insulator. A tubular shield surrounds the dielectric and has helical corrugations penetrating into and compressing the foam dielectric to effectively suppress the formation of fluid migration air gaps or passageways between the shield and the dielectric. The shield is preferably composed of aluminum or aluminum alloy. Alternatively, the shield may be annularly corrugated for improved water blocking performance. The manufacturing process employs high speed welding and multi-lead corrugating operations to reduce cost.Type: GrantFiled: November 14, 2002Date of Patent: July 5, 2005Assignee: Andrew CorporationInventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
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Patent number: 6848941Abstract: A cable-connector system advantageously used with flexible, relatively small diameter coaxial cable and connectors, including a coaxial cable with a foam dielectric surrounding an inner conductor; and a tubular outer conductor surrounding the foam dielectric, the outer conductor being composed of aluminum or aluminum alloy and having helical corrugations; and a connector, having: a connector body having a hollow bore with internal perturbations keyed to the helical corrugations and arranged to retentively receive and secure the connector on the cable when the connector is screwed onto the cable with the corrugations engaging the perturbations; the connector body having a crimp section adapted to be compressed by a connector crimping tool; the crimp section configured such that when crimped, the crimp section deforms inwardly and distorts the cable outer conductor corrugations to prevent relative rotation between the cable and the connector body and interlock the connector and cable.Type: GrantFiled: March 17, 2003Date of Patent: February 1, 2005Assignee: Andrew CorporationInventors: James Wlos, James Krabec
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Patent number: 6840803Abstract: A corrugated coaxial cable connector, field installable with a hand crimp tool has a connector interface coupled to the connector end of a hollow cylindrical body; an inner surface of the body is adapted to thread onto the helical corrugations on the outer conductor of the cable. A plurality of ridges on an outer surface of the body corresponding to an internal threaded section forms a crimp surface. An inner contact located coaxially within the body has a socket contact section at the cable end dimensioned for insertion of the inner conductor of the cable and electrical connection therewith. A body barb located on the outer surface of the body provides an acute surface for heat shrink tubing to seal against.Type: GrantFiled: February 13, 2003Date of Patent: January 11, 2005Assignee: Andrew CorporationInventors: James Wlos, James Krabec
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Publication number: 20040161969Abstract: A corrugated coaxial cable connector, field installable with a hand crimp tool has a connector interface coupled to the connector end of a hollow cylindrical body; an inner surface of the body is adapted to thread onto the helical corrugations on the outer conductor of the cable. A plurality of ridges on an outer surface of the body corresponding to an internal threaded section forms a crimp surface. An inner contact located coaxially within the body has a socket contact section at the cable end dimensioned for insertion of the inner conductor of the cable and electrical connection therewith. A body barb located on the outer surface of the body provides an acute surface for heat shrink tubing to seal against.Type: ApplicationFiled: February 13, 2003Publication date: August 19, 2004Applicant: ANDREW CORPORATIONInventors: James Wlos, James Krabec
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Publication number: 20040161970Abstract: A cable-connector system advantageously used with flexible, relatively small diameter coaxial cable and connectors, including a coaxial cable with a foam dielectric surrounding an inner conductor; and a tubular outer conductor surrounding the foam dielectric, the outer conductor being composed of aluminum or aluminum alloy and having helical corrugations; and a connector, having: a connector body having a hollow bore with internal perturbations keyed to the helical corrugations and arranged to retentively receive and secure the connector on the cable when the connector is screwed onto the cable with the corrugations engaging the perturbations; the connector body having a crimp section adapted to be compressed by a connector crimping tool; the crimp section configured such that when crimped, the crimp section deforms inwardly and distorts the cable outer conductor corrugations to prevent relative rotation between the cable and the connector body and interlock the connector and cable.Type: ApplicationFiled: March 17, 2003Publication date: August 19, 2004Applicant: ANDREW CORPORATIONInventors: James Wlos, James Krabec
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Patent number: 6693241Abstract: A helical corrugated coaxial cable possesses low cost of manufacture comparable to that of braided shield coaxial cable, electrical performance comparable to solid tubular shielded cable, flexibility of helical and annular corrugated cable, and fluid blockage comparable to annular shielded cable. The cable has an inner conductor surrounded by a foam dielectric insulator. A tubular shield surrounds the dielectric and has helical corrugations penetrating into and compressing the foam dielectric to effectively suppress the formation of fluid migration air gaps or passageways between the shield and the dielectric. The shield is preferably composed of aluminum or aluminum alloy. Alternatively, the shield may be annularly corrugated for improved water blocking performance. The manufacturing process employs high speed welding and multi-lead corrugating operations to reduce cost.Type: GrantFiled: April 24, 2002Date of Patent: February 17, 2004Assignee: Andrew CorporationInventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
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Patent number: 6649841Abstract: A corrugated coaxial cable including a core with at least one inner conductor and a highly expanded polymeric foam dielectric surrounding the inner conductor. This coaxial cable has a corrugated outer conductor closely encapsulating the foam dielectric. The corrugated coax cable is dimensioned to provide the cable with a velocity of propagation of greater than 90% of the speed of light.Type: GrantFiled: November 21, 2001Date of Patent: November 18, 2003Assignee: Andrew CorporationInventors: Vijay K. Chopra, Hugh R. Nudd, James A. Krabec
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Publication number: 20030201115Abstract: A helical corrugated coaxial cable possesses low cost of manufacture comparable to that of braided shield coaxial cable, electrical performance comparable to solid tubular shielded cable, flexibility of helical and annular corrugated cable, and fluid blockage comparable to annular shielded cable. The cable has an inner conductor surrounded by a foam dielectric insulator. A tubular shield surrounds the dielectric and has helical corrugations penetrating into and compressing the foam dielectric to effectively suppress the formation of fluid migration air gaps or passageways between the shield and the dielectric. The shield is preferably composed of aluminum or aluminum alloy. Alternatively, the shield may be annularly corrugated for improved water blocking performance. The manufacturing process employs high speed welding and multi-lead corrugating operations to reduce cost.Type: ApplicationFiled: April 24, 2002Publication date: October 30, 2003Applicant: Andrew CorporationInventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
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Publication number: 20030201116Abstract: A helical corrugated coaxial cable possesses low cost of manufacture comparable to that of braided shield coaxial cable, electrical performance comparable to solid tubular shielded cable, flexibility of helical and annular corrugated cable, and fluid blockage comparable to annular shielded cable. The cable has an inner conductor surrounded by a foam dielectric insulator. A tubular shield surrounds the dielectric and has helical corrugations penetrating into and compressing the foam dielectric to effectively suppress the formation of fluid migration air gaps or passageways between the shield and the dielectric. The shield is preferably composed of aluminum or aluminum alloy. Alternatively, the shield may be annularly corrugated for improved water blocking performance. The manufacturing process employs high speed welding and multi-lead corrugating operations to reduce cost.Type: ApplicationFiled: November 14, 2002Publication date: October 30, 2003Applicant: Andrew CorporationInventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
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Patent number: 6624358Abstract: A miniature coaxial cable having an outside diameter of less than 0.25 inch (6.3 mm). An inner conductor is surrounded by a foamed polymer dielectric and a continuous corrugated metal outer conductor surrounds the foamed dielectric. The cable of the invention has electrical performance superior to that of prior art cables having braided outer conductors and flexibility superior to that of cables having smooth tubular outer conductors.Type: GrantFiled: December 13, 2001Date of Patent: September 23, 2003Assignee: Andrew CorporationInventors: James Krabec, Jack Knowles
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Publication number: 20030111252Abstract: A miniature coaxial cable having an outside diameter of less than 0.25 inch (6.3 mm). An inner conductor is surrounded by a foamed polymer dielectric and a continuous corrugated metal outer conductor surrounds the foamed dielectric. The cable of the invention has electrical performance superior to that of prior art cables having braided outer conductors and flexibility superior to that of cables having smooth tubular outer conductors.Type: ApplicationFiled: December 13, 2001Publication date: June 19, 2003Inventors: James Krabec, Jack Knowles
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Publication number: 20020096354Abstract: A corrugated coaxial cable including a core with at least one inner conductor and a highly expanded polymeric foam dielectric surrounding the inner conductor. This coaxial cable has a corrugated outer conductor closely encapsulating the foam dielectric. The corrugated coax cable has a velocity of propagation of greater than 90% of the speed of light, resulting in improved signal propagation characteristics, especially in attenuation, while still maintaining the high flexibility and bending properties which are characteristic of corrugated coaxial cables designs.Type: ApplicationFiled: November 21, 2001Publication date: July 25, 2002Inventors: Vijay K. Chopra, Hugh R. Nudd, James A. Krabec
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Patent number: 5742002Abstract: A coaxial cable having coaxial inner and outer conductors which are separated by a helix of solid dielectric material. The helix extends through the annular space between the inner and outer conductors, and the helix is wound around the inner conductor. The inner edge of the helix engages the inner conductor and the outer edge of the helix engages the outer conductor. The outer edge of the helix forms multiple notches along the length of the helix, and the body of the helix is hollow.Type: GrantFiled: July 20, 1995Date of Patent: April 21, 1998Assignee: Andrew CorporationInventors: James M. Arredondo, Thomas A. Fleisher, James A. Krabec, James R. Gentile
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Patent number: 4477693Abstract: An electrical cable includes a core, a jacket and improved shielding with unexpectably low transfer impedance. The shielding includes an inner foil laminate, a braided sleeve, and an outer foil laminate, each foil laminate having at least one conductive layer and at least one strength-giving non-conductive layer. At least one of the foils includes a shorting fold to limit the slot effect. Preferably, the inner foil has two conductive layers, and the outer foil has the shorting fold.Type: GrantFiled: December 9, 1982Date of Patent: October 16, 1984Assignee: Cooper Industries, Inc.Inventors: James A. Krabec, John W. Kincaid, Paul B. Miller