US4933512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable closure
Assignee: NTT Inc
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Filing: 1988-11-17
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Granted: 1990-06-12
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Expires: 2008-11-17
Abstract
Abstract To reduce the number of parts, assembly work time and cost of a cable closure including a two-splittable cylindrical sleeve for covering the cable junction point, and a pair of two-dividable annular end plates fitted to both inner ends of the sleeve to close spaces between the cables and the sleeve, the end plates are formed by a rigid plastic material and gaps between the cable and the end plates are sealed by rubber airtight tape wound around the cable by adjusting the number of turns according to cable diameter. Further, two cable gripping means are fixed to the end plates, respectively to protect the junction point from external force applied between the two cables by the strength of the sleeve coupled to the end plates.
Inventors
- 👤 Takayuki Nimiya
- 👤 Tsuneto Hinohara
- 👤 Kazuki Yuhara
- 👤 Yuji Kotani
- 👤 Masato Hirata
- 👤 Mitsuyoshi Katsuse
- 👤 Hiroshi Takahashi
- 👤 Kenji Kosugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:17
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/007; H02G15/02; H02G15/04; G; G02; G02B; G02B6/00; G02B6/44; G02B6/4439; G02B6/444; G02B6/4441; G02B6/4446; G02B6/44465; G02B6/4471; G02B6/44775; H02G15/013; H02G15/08; H02G15/10; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49194
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
135 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more times around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; and (d) cable gripping means, coupled to each of said end plates in recess-projection engagement relationship, for gripping cables to protect a cable junction point from external force applied between two cables in dependence upon strength of said sleeve coupled to said end plates.
Claim 2
Dependent Claim
135 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more times around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; and (d) cable gripping means, coupled to each of said end plates in recess-projection engagement relationship, for gripping cables to protect a cable junction point from external force applied between two cables in dependence upon strength of said sleeve coupled to said end plates.
Claim 3
Independent Claim
112 words
A method of assembling a cable closure, comprising the steps of: (a) winding an elastic airtight tape at two positions on both sides of a cable junction point between two cables by adjusting the number of tape turns according to cable diameter; (b) fixing a plurality of end plates by sandwiching the wound elastic airtight tape therebetween, respectively; (c) winding the elastic airtight tape on an outer circumferential surface of each of the end plates; and (d) fastening a two-splittable cylindrical sleeve member, with said end plates fitted to both inner and circumferential surfaces of the sleeve members, by use of a plurality of sleeve fastening bands each provided with a buckle.
Claim 4
Independent Claim
112 words
A method of assembling a cable closure, comprising the steps of: (a) winding an elastic airtight tape at two positions on both sides of a cable junction point between two cables by adjusting the number of tape turns according to cable diameter; (b) fixing a plurality of end plates by sandwiching the wound elastic airtight tape therebetween, respectively; (c) winding the elastic airtight tape on an outer circumferential surface of each of the end plates; and (d) fastening a two-splittable cylindrical sleeve member, with said end plates fitted to both inner and circumferential surfaces of the sleeve members, by use of a plurality of sleeve fastening bands each provided with a buckle.
Claim 5
Dependent Claim
93 words
The method of assembling a cable closure of claim 2, which further comprises the steps of: (a) fitting two cable gripping means to both the sides of the cable junction point; (b) engaging two cable gripping means with the two end plates, respectively before fixing the end plates; and (c) fixing the two cable gripping means to a cable sheath, respectively to protect a cable junction point from external force applied between two cables in dependence upon strength of the sleeve member coupled to the end plates; and (d) fixing the end plates.
Claim 6
Dependent Claim
108 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more turns around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; and (d) second elastic sealing means for airtightly sealing gaps between said end plates and said sleeve.
Claim 7
Dependent Claim
108 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more turns around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; and (d) second elastic sealing means for airtightly sealing gaps between said end plates and said sleeve.
Claim 8
Dependent Claim
21 words
The cable closure of claim 4, wherein said second elastic sealing means is an elastic airtight tape around said end plates.
Claim 9
Dependent Claim
18 words
The cable closure of claim 5, wherein said elastic airtight tape is made of an ethylene propylene rubber.
Claim 10
Dependent Claim
51 words
The cable closure of claim 4, which further comprises cable gripping means, coupled to each of said end plates in recess-projection engagement relationship, for gripping cables to protect a cable junction point from external force applied between two cables in dependence upon strength of said sleeve coupled to said end plates.
Claim 11
Dependent Claim
122 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more turns around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; wherein said elastic airtight tape is coated with adhesive agent applied on both outer side ends of one surface of the tape for providing an easy tape winding around the cable.
Claim 12
Dependent Claim
122 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) an elastic airtight tape wound one or more turns around said cables, for airtightly sealing gaps between said cables and said rigid end plates, the number of tape turns being selected according to cable diameter; wherein said elastic airtight tape is coated with adhesive agent applied on both outer side ends of one surface of the tape for providing an easy tape winding around the cable.
Claim 13
Dependent Claim
51 words
The cable closure of claim 8, which further comprises cable gripping means, coupled to each of said end plates in recess-projection engagement relationship, for gripping cables to protect a cable junction point from external force applied between two cables in dependence upon strength of said sleeve coupled to said end plates.
Claim 14
Dependent Claim
235 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) first elastic sealing means for airtightly sealing gaps between said cables and said rigid end plates; (d) cable gripping means, coupled to each of said end plates, for gripping cables to protect the cable junction point from external force applied between the two cables in dependence upon strength of said sleeve coupled to said end plates; (e) said cable gripping means comprising: (i) a pair of two separable annular screw support members; (ii) a plurality of cable fastening screws screwed into a plurality of threaded holes formed at regular angular intervals along the outer circumference of each of said annular screw support members so as to be movable in the radial direction of said screw support member; and (iii) a plurality of arcuate cable push members each formed with conical projections on an inner surface thereof, said cable push members being loosely fitted to a radially inner end of said cable fastening screws so that the conical projections are brought into tight contact with a cable sheath for cable gripping when said cable fastening screws are moved radially inward.
Claim 15
Dependent Claim
235 words
A cable closure for closing a junction point of two cables, comprising: (a) a sleeve for covering a cable junction point; (b) a plurality of end plates, fitted to both inner ends of said sleeve, for closing spaces between said cables and said sleeve, said plurality of end plates being formed by a rigid material; (c) first elastic sealing means for airtightly sealing gaps between said cables and said rigid end plates; (d) cable gripping means, coupled to each of said end plates, for gripping cables to protect the cable junction point from external force applied between the two cables in dependence upon strength of said sleeve coupled to said end plates; (e) said cable gripping means comprising: (i) a pair of two separable annular screw support members; (ii) a plurality of cable fastening screws screwed into a plurality of threaded holes formed at regular angular intervals along the outer circumference of each of said annular screw support members so as to be movable in the radial direction of said screw support member; and (iii) a plurality of arcuate cable push members each formed with conical projections on an inner surface thereof, said cable push members being loosely fitted to a radially inner end of said cable fastening screws so that the conical projections are brought into tight contact with a cable sheath for cable gripping when said cable fastening screws are moved radially inward.
References Cited (Backward Citations)
GB723457A
Cited
US3130259A
Cited
US3233035A
Cited
US3614298A
Cited
US3692926A
Cited
US3775204A
Cited
US3869189A
Cited
DE2432384A1
Cited
DE2743937A1
Cited
US4341922A
Cited
US4295005A
Cited
US4381425A
Cited
EP0110673A1
Cited
US4538021A
Cited
US4558174A
Cited
US4720605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |