Patents by Inventor Leonard Visser

Leonard Visser 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).

  • Publication number: 20230197315
    Abstract: In an electronic cable embodiment, a shielding tape includes a first metallic layer having a first orientation along which micro-fractures are predisposed to form, and a second metallic layer having a second orientation along which micro-fractures are predisposed to form. The first and second orientations have a non-zero transverse relation with respect to each other. An adhesive is disposed between the first and second metallic layers. Metallic solids are dispersed throughout the adhesive so as to define the adhesive with electrically conductive material characteristics.
    Type: Application
    Filed: December 15, 2022
    Publication date: June 22, 2023
    Applicant: PCT International, Inc.
    Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
  • Patent number: 11538605
    Abstract: In an electronic cable, a shielding tape prevents and mitigates the creation and propagation of micro-fractures and the deleterious effects thereof. In some embodiments, the shielding tape has layers which are oriented in a non-zero transverse relation with respect to each other, or have been treated to have non-zero orientations. Other embodiments include micro-fracture propagation mitigation means, such as perforations, ridges, waffling, and dimpling. In some embodiments, the layers of the shielding tape are bonded to each other with an electrically-conductive elastomeric adhesive. In other embodiments, the shielding tape is wrapped around a cable's dielectric and form an overlap gap, which is filled by an electrically-conductive elastomeric adhesive.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: December 27, 2022
    Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
  • Publication number: 20210241939
    Abstract: In an electronic cable, a shielding tape prevents and mitigates the creation and propagation of micro-fractures and the deleterious effects thereof. In some embodiments, the shielding tape has layers which are oriented in a non-zero transverse relation with respect to each other, or have been treated to have non-zero orientations. Other embodiments include micro-fracture propagation mitigation means, such as perforations, ridges, waffling, and dimpling. In some embodiments, the layers of the shielding tape are bonded to each other with an electrically-conductive elastomeric adhesive. In other embodiments, the shielding tape is wrapped around a cable's dielectric and form an overlap gap, which is filled by an electrically-conductive elastomeric adhesive.
    Type: Application
    Filed: April 26, 2021
    Publication date: August 5, 2021
    Applicant: PCT International, Inc.
    Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
  • Publication number: 20190228878
    Abstract: In an electronic cable, a shielding tape prevents and mitigates the creation and propagation of micro-fractures and the deleterious effects thereof. In some embodiments, the shielding tape has layers which are oriented in a non-zero transverse relation with respect to each other, or have been treated to have non-zero orientations. Other embodiments include micro-fracture propagation mitigation means, such as perforations, ridges, waffling, and dimpling. In some embodiments, the layers of the shielding tape are bonded to each other with an electrically-conductive elastomeric adhesive. In other embodiments, the shielding tape is wrapped around a cable's dielectric and form an overlap gap, which is filled by an electrically-conductive elastomeric adhesive.
    Type: Application
    Filed: January 24, 2019
    Publication date: July 25, 2019
    Applicant: PCT International, Inc.
    Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
  • Patent number: 9728304
    Abstract: A coaxial cable of the present invention comprises a center conductor, a dielectric surrounding the center conductor, a shielding tape surrounding the dielectric, a braided metal surrounding the shielding tape, and an outer jacket surrounding the braided metal. The shielding tape comprises: (i) a first shielding layer bonded to a first separating layer; (ii) a second shielding layer bonded to the first separating layer and a second separating layer; and (iii) a third shielding layer bonded to the second separating layer. The present invention eliminates the potential problem of the outer shielding structures separating and interfering with connector attachment. Furthermore, the use of three or more shielding layers in the shielding tape of the present invention improves the flex life of the shield tape by covering micro-cracks in the metal layers with additional shielding layers, thus reducing signal egress or ingress.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: August 8, 2017
    Assignee: PCT International, Inc.
    Inventor: Leonard Visser
  • Publication number: 20110011639
    Abstract: A coaxial cable of the present invention comprises a center conductor, a dielectric surrounding the center conductor, a shielding tape surrounding the dielectric, a braided metal surrounding the shielding tape, and an outer jacket surrounding the braided metal. The shielding tape comprises: (i) a first shielding layer bonded to a first separating layer; (ii) a second shielding layer bonded to the first separating layer and a second separating layer; and (iii) a third shielding layer bonded to the second separating layer. The present invention eliminates the potential problem of the outer shielding structures separating and interfering with connector attachment. Furthermore, the use of three or more shielding layers in the shielding tape of the present invention improves the flex life of the shield tape by covering micro-cracks in the metal layers with additional shielding layers, thus reducing signal egress or ingress.
    Type: Application
    Filed: October 26, 2009
    Publication date: January 20, 2011
    Inventor: Leonard Visser
  • Publication number: 20110011638
    Abstract: The present invention comprises a shielding tape comprising at least one shielding layer, at least one separator layer, a first (inner) edge, and a second (outer) edge. The shielding tape further includes an indicator extending along at least a portion of the outer edge. The indicator is for identifying the outer edge when the outer edge overlaps the inner edge when the shielding tape is positioned onto a cable. Alternatively, both edges may have an indicator. The present invention makes it easy to locate the outer edge of the shielding tape for an installer wishing to remove at least some of the shielding tape before crimping or compressing a connector onto the end of a cable.
    Type: Application
    Filed: October 26, 2009
    Publication date: January 20, 2011
    Inventors: Paul Gemme, Leonard Visser
  • Patent number: 7084343
    Abstract: A corrosion-resistant radio-frequency coaxial cable includes an inner conductor, a layer of dielectric material surrounding the inner conductor and an outer conductor comprising a laminate surrounded by at least one braided aluminum wire sheath. The laminate includes at least one layer of aluminum foil bonded to a substrate, where substrate is longitudinally wrapped about the dielectric material. A jacket of weather-proofing material surrounds the braided sheath. A corrosion-inhibiting coating is applied to the aluminum foil of the laminate, which coating is formed of a wax acid polyester. The wax acid polyester includes the compounds of a polybasic acid or anhydride, a polyol, and an effective amount of a lanolin wax acid to form a wax polyester in situ coating. The wax acid polyester is formed by the in-situ reaction of an aqueous emulsion of a polybasic acid or anhydride, a polyol and an effective amount of a lanolin wax acid.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: August 1, 2006
    Assignee: Andrew Corporation
    Inventor: Leonard Visser
  • Patent number: 6912777
    Abstract: 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: Grant
    Filed: November 14, 2002
    Date of Patent: July 5, 2005
    Assignee: Andrew Corporation
    Inventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
  • Patent number: 6693241
    Abstract: 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: Grant
    Filed: April 24, 2002
    Date of Patent: February 17, 2004
    Assignee: Andrew Corporation
    Inventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
  • Publication number: 20030201116
    Abstract: 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: Application
    Filed: November 14, 2002
    Publication date: October 30, 2003
    Applicant: Andrew Corporation
    Inventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser
  • Publication number: 20030201115
    Abstract: 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: Application
    Filed: April 24, 2002
    Publication date: October 30, 2003
    Applicant: Andrew Corporation
    Inventors: Bruce Carlson, Jack L. Knowles, James Krabec, Leonard Visser