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:
Nov. 06, 2001
Filed:
Apr. 28, 2000
Applicant:
Inventors:
Ian Dewi Lang, Newport, GB;
Ralph Sutehall, Newport, GB;
Martin Vincent Davies, Newport, GB;
John Garth Lamb, Herefordshire, GB;
Assignee:
Pirelli General plc, London, GB;
Primary Examiner:
Int. Cl.
CPC ...
B60F 3/24 ;
U.S. Cl.
CPC ...
B60F 3/24 ;
Abstract
In order to install an optical fiber cable,in a duct,a plurality of vents,spaced apart along the duct are operated such that during blowing any vent,upstream of the leading end,of the cable is closed and when there is at least one vent,downstream of the cable leading end at least the downstream vent,closest to the cable leading end is open for venting gas from the duct. In this way the pressure decay and pressure gradient profiles are modified during installation to improve installation performance.