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).
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Publication number: 20230197315Abstract: 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: ApplicationFiled: December 15, 2022Publication date: June 22, 2023Applicant: PCT International, Inc.Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
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Patent number: 11538605Abstract: 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: GrantFiled: April 26, 2021Date of Patent: December 27, 2022Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
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Publication number: 20210241939Abstract: 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: ApplicationFiled: April 26, 2021Publication date: August 5, 2021Applicant: PCT International, Inc.Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
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Publication number: 20190228878Abstract: 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: ApplicationFiled: January 24, 2019Publication date: July 25, 2019Applicant: PCT International, Inc.Inventors: Leonard Visser, Timothy L. Youtsey, Walter B. Melton
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Patent number: 9728304Abstract: 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: GrantFiled: October 26, 2009Date of Patent: August 8, 2017Assignee: PCT International, Inc.Inventor: Leonard Visser
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Publication number: 20110011639Abstract: 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: ApplicationFiled: October 26, 2009Publication date: January 20, 2011Inventor: Leonard Visser
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Publication number: 20110011638Abstract: 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: ApplicationFiled: October 26, 2009Publication date: January 20, 2011Inventors: Paul Gemme, Leonard Visser
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Patent number: 7084343Abstract: 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: GrantFiled: May 12, 2005Date of Patent: August 1, 2006Assignee: Andrew CorporationInventor: Leonard Visser
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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: 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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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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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