Title: Communication system

Abstract: Data and speech are transmitted along an elongate member from a transmitter to a receiver. Toroids are used to effect a low frequency coupling between the transceivers and the elongate member. The toroids are segmented and their windings are such as to form part of a resonant circuit as well as being arranged around the segments such that external fields are cancelled. Protective shrouds are arranged around at least part of the toroids.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Brooks, Brian E. (Burton-on-Trent, GB)

Application Number: 923622
Filing Date: 1978-07-11
Publication_date: 1980-05-13
Assignee: Coal Industry (Patents) Limited (GB2)
Primary Class(es): 375/219 191/10
Other Classes:
US Patent Ref:

1098528	Jun, 1914	Reineke	179/82.
1375675	Apr, 1921	Colpitts	179/82.
2865086	Dec, 1958	Whipple	336/229.
3448421	Jun, 1969	Berg et al.	336/229.
4099022	Jul, 1978	Fullerton et al.	178/63.
4113985	Sep, 1978	Day	179/81.

Other Refs: 8085418095248625628662971432212

Feb, 1959	GB.
Feb, 1959	GB.
Mar, 1961	GB.
Apr, 1961	GB.
Apr, 1976	GB.

Primary Examiner: Robinson, Thomas A.
Assistant Examiner:
Attorney: Stevens, Davis, Miller & Mosher