Patent US3894173A successfully refreshed from Google Patents.
US3894173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying telephone pair identification sleeve, sleeve, and reeled cable comprising same
Assignee: Radio Frequency Systems Inc
•
Filing: 1974-07-24
•
Granted: 1975-07-08
•
Expires: 1994-07-24
Abstract
Abstract Defective pairs in telephone cables are identified by means of long notched plastic sleeves. A pair is inserted into the end of a sleeve and brought out radially through the notch. Manually pushing the long end of the flexible sleeve forces the portion that surrounds the pair of follow the pair helix deep enough into the cable to be visible when the capped end of the cable has been cut off for installation.
Inventors
- 👤 Franklin D Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:31
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/34; H02; H02G; H02G15/00; H02G15/02; H02G15/04; H02G15/043; H02G15/06; H02G15/076; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49174; Y10T29/49176; Y10T29/49178
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
207 words
The method of identifying a defective pair in a sheathed telephone cable comprising a plurality of helically cabled conductor pairs and having at least one defective pair, comprising the steps of: A. removing a portion of the sheath from an end of said cable, B. providing a tubular sealing cover having a selected length closed at one end, for said cable, C. providing a smooth flexible sleeve for identifying said defective pair, said sleeve comprising a wall defining a notch at a selected distance along the length thereof opening into said sleeve, D. inserting an end of said defective pair into one end of said sleeve, withdrawing said end of said defective pair radially through said notch and leaving a portion of said sleeve free from said defective pair, E. while holding said end of said defective pair taut, gripping said free portion and therewith urging said sleeve into the sheathed portion of said cable along the helix of said defective pair, to a depth exceeding said length of said cover, F. cutting said pairs and said sleeve at a section substantially flush with a cut end of said sheath, and G. fitting and fastening said cover over said sheath thereby sealing said end of said cable.
Claim 2
Independent Claim
207 words
The method of identifying a defective pair in a sheathed telephone cable comprising a plurality of helically cabled conductor pairs and having at least one defective pair, comprising the steps of: A. removing a portion of the sheath from an end of said cable, B. providing a tubular sealing cover having a selected length closed at one end, for said cable, C. providing a smooth flexible sleeve for identifying said defective pair, said sleeve comprising a wall defining a notch at a selected distance along the length thereof opening into said sleeve, D. inserting an end of said defective pair into one end of said sleeve, withdrawing said end of said defective pair radially through said notch and leaving a portion of said sleeve free from said defective pair, E. while holding said end of said defective pair taut, gripping said free portion and therewith urging said sleeve into the sheathed portion of said cable along the helix of said defective pair, to a depth exceeding said length of said cover, F. cutting said pairs and said sleeve at a section substantially flush with a cut end of said sheath, and G. fitting and fastening said cover over said sheath thereby sealing said end of said cable.
Claim 3
Dependent Claim
33 words
The method of claim 1 wherein said distance is from one-half inch to six inches from one end of said sleeve, said end of said defective pair being inserted into said one end.
Claim 4
Dependent Claim
103 words
A plastic sleeve for insertion into a cable around a helically stranded telephone pair comprising a tubular wall of polymeric material, said wall defining a close fitting passageway for said pair, said sleeve being tapered at one end thereof, said wall comprising a notch defining an opening therethrough for said pair said notch sloping radially outwardly away from the tapered end of said sleeve, said sleeve being sufficiently stiff for insertion into said cable by means of a force applied to said sleeve on a portion remote from said notch and said sleeve being sufficiently flexible to follow the helix of said pair.
Claim 5
Dependent Claim
103 words
A plastic sleeve for insertion into a cable around a helically stranded telephone pair comprising a tubular wall of polymeric material, said wall defining a close fitting passageway for said pair, said sleeve being tapered at one end thereof, said wall comprising a notch defining an opening therethrough for said pair said notch sloping radially outwardly away from the tapered end of said sleeve, said sleeve being sufficiently stiff for insertion into said cable by means of a force applied to said sleeve on a portion remote from said notch and said sleeve being sufficiently flexible to follow the helix of said pair.
Claim 6
Dependent Claim
27 words
The sleeve of claim 3 wherein said polymeric material comprises a polymer selected from the group consisting of polypropylene, nylon, high density polyethylene and rigid polyvinyl chloride.
Claim 7
Dependent Claim
23 words
The sleeve of claim 4 wherein said notch is from one-half inch to about six inches from the tapered end of said sleeve.
Claim 8
Dependent Claim
11 words
The sleeve of claim 3 wherein said polymeric material comprises polypropylene.
Claim 9
Dependent Claim
23 words
The sleeve of claim 6 wherein said notch is from one-half inch to about six inches from the tapered end of said sleeve.
Claim 10
Dependent Claim
22 words
The sleeve of claim 3 wherein said notch is from one-half to about six inches from the tapered end of said sleeve.
Claim 11
Dependent Claim
116 words
A coil of sheathed telephone cable comprising a large plurality of insulated conductor pairs, of said pairs at least one being selected for marking, tubular covers sealing both ends of said cable and extending over said cable for substantial distances at said ends, polymeric sleeves having notches within said cable at both ends thereof, porTions of said sleeves covering said selected pair forward of said notches and portions of said sleeves being free from said pair rearward of said notches, said sleeves extending to the ends of said cable and said portions of said sleeves covering said selected pair forward of said notches being within said cable and extending beyond the distances covered by said covers.
Claim 12
Dependent Claim
116 words
A coil of sheathed telephone cable comprising a large plurality of insulated conductor pairs, of said pairs at least one being selected for marking, tubular covers sealing both ends of said cable and extending over said cable for substantial distances at said ends, polymeric sleeves having notches within said cable at both ends thereof, porTions of said sleeves covering said selected pair forward of said notches and portions of said sleeves being free from said pair rearward of said notches, said sleeves extending to the ends of said cable and said portions of said sleeves covering said selected pair forward of said notches being within said cable and extending beyond the distances covered by said covers.
Claim 13
Dependent Claim
24 words
The coil of claim 9 wherein said portions of said sleeves forward of said notches are one-half inch to about six inches in length.
Claim 14
Dependent Claim
26 words
The cable of claim 10 wherein said sleeves comprise a polymeric material selected from the group consisting of polypropylene, nylon, high-density polyethylene, and rigid polyvinyl chloride.
Claim 15
Dependent Claim
11 words
The cable of claim 11 wherein said polymeric material is polypropylene.
Claim 16
Dependent Claim
26 words
The cable of claim 9 wherein said sleeves comprise a polymeric material selected from the group consisting of polypropylene, nylon, high-density polyethylene, and rigid polyvinyl chloride.
Claim 17
Dependent Claim
11 words
The cable of claim 13 wherein said polymeric material is polypropylene.
References Cited (Backward Citations)
US1574297A
Cited
US2166420A
Cited
US1857197A
Cited
US1841476A
Cited
US1979756A
Cited
US2460830A
Cited
US3068600A
Cited
US3534777A
Cited
US3787608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-07 | 1979-01-06 | 1979-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-07 | 1983-01-06 | 1983-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-07 | 1987-01-06 | 1987-07-08 | $7700.00 | Window Closed / Lapsed |