The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2002
Filed:
Apr. 30, 1996
John Joseph Mottine, Jr., Phoenix, AZ (US);
Kenneth Scott Koehler, Phoenix, AZ (US);
Sayed John Mirkazemi, Peoria, AZ (US);
Richard Stephen Cuprak, Jr., Tempe, AZ (US);
Gabriel Pasquale Pellicciotti, Phoenix, AZ (US);
Todd Alan Rhoades, Rancho Murieta, CA (US);
Belden Communications, Phoenix, AZ (US);
Abstract
A communications cable having superior electrical characteristics and meeting the burn requirements for plenum applications has a core formed of one or more twisted wire pairs having primary insulation formed of a suitable material, such as high density polyethylene. The core is surrounded by an inner jacket formed of a low smoke, polyvinyl chloride material. As an alternative to or in addition to the inner jacket, the core may be surrounded by a core wrap having adequate electrical properties and burn/flame resistance properties. The inner jacket is surrounded by an outer jacket formed from a material having excellent heat/flame resistance characteristics but which may have less than optimal electrical characteristics, such as a thermoplastic halogenated polymer, for example polyvinylidine fluoride material. A plurality of cores surrounded by individual inner core wraps and/or inner jackets may be surrounded by the outer jacket.