Title: Apparatus for monitoring core charging of waterproof communication cable

Abstract: An apparatus is disclosed for monitoring the charging of a cable core with filling compound by continuously comparing the mutual capacitance of a twisted pair in the core with the predicted capacitance of a twisted pair known to be completely charged with filling compound.

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Inventors: Biskeborn, Merle C. (Chatham, NJ, US)

Application Number: 712155
Filing Date: 1976-08-06
Publication_date: 1978-04-18
Assignee: Phelps Dodge Industries, Inc. (New York, NY)
Primary Class(es): 156/356 156/378, 324/673
Other Classes:
US Patent Ref:

2535027	Dec, 1950	Anderson	324/61.
2721975	Oct, 1955	Wojciechowski	324/61.
2968180	Jan, 1961	Schafer	324/61.
3096478	Jul, 1963	Brown	324/61.
3221171	Nov, 1965	Locher	324/61.
3241061	Mar, 1966	Quittner	324/61.
3387208	Jun, 1968	Foley	324/60.
3471780	Oct, 1969	Beddows	324/61.
3973187	Aug, 1976	Cereijo et al.	324/61.

Other Refs: 670,035

Apr, 1952	UK

Primary Examiner: Simmons, David A.
Assistant Examiner:
Attorney: Davis, Hoxie, Faithfull & Hapgood