US4729803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of filling a cable with a flooding compound
Assignee: SONNEBORN HOLDING LLC
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Filing: 1987-01-23
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Granted: 1988-03-08
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Expires: 2007-01-23
Abstract
Abstract A flooding compound for a waterproof communications cable is formed from a heated mixture of 92-94% by weight of a microcrystalline wax, 3-5% polyethylene and 2-4% of a rubber. The heated mixture is extruded between the plastic jacket and core sheath of a cable. The compound exhibits the adhesive and slip characteristics of, and is a replacement for, atactic polypropylene.
Inventors
- 👤 Thomas D. Hindman
- 👤 Thomas J. Roessing
- 👤 Joseph D. Burkhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:10
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; C; C08; C08L; C08L91/00; C08L91/06; C08L91/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
104 words
A method of filling a cable with a flooding compound comprising; (a) dissolving a wax soluble rubber in a microcrystalline wax at an elevated temperature between 220° F. to 260° F., said rubber comprising an ethylene-propylene copolymer; (b) dissolving polyethylene in the mixture of step (a), and said wax being present in at least 90% by weight; (c) extruding the mixture of step (b) at about said elevated temperature, between a metal sheath and a plastic cable covering of said cable, and wherein the extruded mixture has the jacket slip characteristics of atactic polypropylene as defined by the R.E.A. 15 lb. minimum test standard.
Claim 2
Independent Claim
104 words
A method of filling a cable with a flooding compound comprising; (a) dissolving a wax soluble rubber in a microcrystalline wax at an elevated temperature between 220° F. to 260° F., said rubber comprising an ethylene-propylene copolymer; (b) dissolving polyethylene in the mixture of step (a), and said wax being present in at least 90% by weight; (c) extruding the mixture of step (b) at about said elevated temperature, between a metal sheath and a plastic cable covering of said cable, and wherein the extruded mixture has the jacket slip characteristics of atactic polypropylene as defined by the R.E.A. 15 lb. minimum test standard.
Claim 3
Dependent Claim
14 words
The method of claim 1, said extruding being between 220° F. to 260° F.
Claim 4
Independent Claim
92 words
A method of filing a cable with a flooding compound comprising; (a) dissolving a wax soluble rubber in a microcrystalline wax at an elevated temperature; (b) dissolving polyethylene in the mixture of step (a), wherein the wax is present in at least 90% by weight; (c) extruding the mixture of step (b) at about said elevated temperature, between a metal sheath and a plastic cable covering of said cable, and wherein the extruded mixture has the jacket slip characteristics of atactic polypropylene as defined by the R.E.A. 15 lb. minimum test standard.
Claim 5
Independent Claim
92 words
A method of filing a cable with a flooding compound comprising; (a) dissolving a wax soluble rubber in a microcrystalline wax at an elevated temperature; (b) dissolving polyethylene in the mixture of step (a), wherein the wax is present in at least 90% by weight; (c) extruding the mixture of step (b) at about said elevated temperature, between a metal sheath and a plastic cable covering of said cable, and wherein the extruded mixture has the jacket slip characteristics of atactic polypropylene as defined by the R.E.A. 15 lb. minimum test standard.
Claim 6
Dependent Claim
19 words
The method of claim 3, the dissolving steps (a) and (b) taking place between 220° F. to 260° F.
Claim 7
Dependent Claim
14 words
The method of claim 3, said rubber comprising a copolymer of ethylene and propylene.
Claim 8
Dependent Claim
14 words
The method of claim 3, said extruding being between 220° F. to 260° F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |