US4490969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic encapsulated wire rope
Assignee: Amsted Industries Inc
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Filing: 1983-03-25
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Granted: 1985-01-01
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Expires: 2003-03-25
Abstract
Abstract The present invention provides a method of manufacturing a thermoplastic encapsulated wire rope. Such thermoplastic encapsulated wire rope is quenched in a lubricant bath or spray to fill any openings in the thermoplastic with lubricant. The wire rope so produced is also part of the present invention.
Inventors
- 👤 Neville H. Simpson
- 👤 Thomas H. Dosemagen
- 👤 David E. Dirks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:37
CPC Classifications
D; D07; D07B; D07B7/00; D07B7/02; D07B7/14; D07B7/145; D07B1/00; D07B1/14; D07B1/141; D07B1/144; D07B1/16; D07B7/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
89 words
In a method of making encapsulated wire rope including the steps of winding several lubricated multi-wire strands to form a wire rope, and extruding a heated thermoplastic thereon which extends into the interstices between the rope strands, the improvement comprising: surrounding the wire rope with a heavy fluid quenching lubricant at a temperature of 50°-100° F. (10°-38° C.) to cool the wire rope and to cause the quenching lubricant to be drawn into any openings in the thermoplastic to further lubricate the wire rope and to seal such openings.
Claim 2
Dependent Claim
89 words
In a method of making encapsulated wire rope including the steps of winding several lubricated multi-wire strands to form a wire rope, and extruding a heated thermoplastic thereon which extends into the interstices between the rope strands, the improvement comprising: surrounding the wire rope with a heavy fluid quenching lubricant at a temperature of 50°-100° F. (10°-38° C.) to cool the wire rope and to cause the quenching lubricant to be drawn into any openings in the thermoplastic to further lubricate the wire rope and to seal such openings.
Claim 3
Dependent Claim
33 words
The method of claim 1, wherein the surrounding of the wire rope by the quenching lubricant causes a partial vacuum in the wire rope which shrinks certain of the openings in the thermoplastic.
Claim 4
Dependent Claim
47 words
A wire rope comprising several lubricated multi-wire strands encapsulated by a thermoplastic extending into the interstices between said strands, and any openings in said thermoplastic being filled with a lubricant drawn therein during quenching of the encapsulated wire rope to prevent the corrosion of said wire rope.
Claim 5
Dependent Claim
47 words
A wire rope comprising several lubricated multi-wire strands encapsulated by a thermoplastic extending into the interstices between said strands, and any openings in said thermoplastic being filled with a lubricant drawn therein during quenching of the encapsulated wire rope to prevent the corrosion of said wire rope.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |