US4123894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed wire rope
Assignee: WILLIAMSPORT WIREROPE WORKS Inc A CORP OF PA
•
Filing: 1977-08-05
•
Granted: 1978-11-07
•
Expires: 1997-08-05
Abstract
Abstract A corrosion resistant rope in which the individual strands are sealed with a plastic foam impregnant and which exhibits excellent retention of lubrication is made by preimpregnating the outer strands of the rope with plastic foam material prior to closing the strands into a wire rope. The final rope may then be surface lubricated to provide temporary and long term corrosion resistance and lubrication to exposed surface wires.
Inventors
- 👤 Charles R. Hughes
- 👤 Darral V. Humphries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:25
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/06; D07B1/0673; D07B1/068; D07B1/14; D07B1/141; D07B1/144; D07B1/16; D07B1/162; D07B1/165; D07B7/00; D07B7/02; D07B7/12; D07B7/14; D07B7/145; D07B2201/00; D07B2201/10; D07B2201/1028; D07B2201/1036; D07B2201/20; D07B2201/2047; D07B2201/2052; D07B2201/2055; D07B2201/2058; D07B2205/00; D07B2205/50; D07B2205/502; Y; Y10; Y10S; Y10S57/00; Y10S57/907; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2942; Y10T428/2973; Y10T428/2978
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
81 words
A corrosion resistant wire rope comprising: (a) a central core, (b) a series of foam plastic impregnated outer strands surrounding the central core, (c) each of said outer strands having a rough fibrous and porous surface as a result of an abrading operation after foaming and hardening of the plastic material, and (d) a grease-like lubricant over the exposed surface of the outer strands intermingled with the fibrous surface of the strand and contained in the surface pores of the plastic.
Claim 2
Dependent Claim
81 words
A corrosion resistant wire rope comprising: (a) a central core, (b) a series of foam plastic impregnated outer strands surrounding the central core, (c) each of said outer strands having a rough fibrous and porous surface as a result of an abrading operation after foaming and hardening of the plastic material, and (d) a grease-like lubricant over the exposed surface of the outer strands intermingled with the fibrous surface of the strand and contained in the surface pores of the plastic.
Claim 3
Dependent Claim
19 words
A wire rope according to claim 1 wherein the central core is comprised of a lubricated wire strand core.
Claim 4
Dependent Claim
17 words
A wire rope according to claim 1 wherein the central core is comprised of a fiber core.
Claim 5
Dependent Claim
19 words
A wire rope according to claim 1 wherein the central core is comprised of an independent wire rope core.
Claim 6
Dependent Claim
20 words
A wire rope according to claim 1 wherein the abrading operation upon the outer strands is a strand closing operation.
Claim 7
Dependent Claim
17 words
A wire rope according to claim 1 wherein the central core is impregnated with plastic foam material.
Claim 8
Independent Claim
50 words
A method of making a corrosion resistant wire rope comprising: (a) making a series of foamable plastic impregnated wire strands, (b) foaming the plastic in the strands, (c) closing said foam impregnated strands about a central core, and (d) applying a viscous lubricant over the surface of the outer strands.
Claim 9
Independent Claim
50 words
A method of making a corrosion resistant wire rope comprising: (a) making a series of foamable plastic impregnated wire strands, (b) foaming the plastic in the strands, (c) closing said foam impregnated strands about a central core, and (d) applying a viscous lubricant over the surface of the outer strands.
Claim 10
Dependent Claim
84 words
A wire rope comprising: (a) a lubricated central core, (b) a series of foam plastic impregnated outer strands surrounding the central core, (c) each of said outer strands having a rough fibrous, porous outer surface as a result of an abrading operation after foaming and hardening of the foam plastic material, the surface of said outer strands being interengaged with adjacent outer strands in a manner such that passage of lubricant from the central core to the exterior of the rope is substantially prevented.
Claim 11
Dependent Claim
84 words
A wire rope comprising: (a) a lubricated central core, (b) a series of foam plastic impregnated outer strands surrounding the central core, (c) each of said outer strands having a rough fibrous, porous outer surface as a result of an abrading operation after foaming and hardening of the foam plastic material, the surface of said outer strands being interengaged with adjacent outer strands in a manner such that passage of lubricant from the central core to the exterior of the rope is substantially prevented.
Claim 12
Dependent Claim
24 words
A corrosion resistant wire rope according to claim 8 wherein the abrading operation to which the outer strands are subjected is a closing operation.
Claim 13
Dependent Claim
28 words
A wire rope according to claim 8 additionally comprising: (d) a layer of wire rope lubricant applied to the outer rough, porous outer surface of the outer strands.
References Cited (Backward Citations)
US2518454A
Cited
US2985056A
Cited
US3639567A
Cited
US3761346A
Cited
US3705489A
Cited
US3681911A
Cited
US3778994A
Cited
US3800522A
Cited
US3824777A
Cited
US3874158A
Cited
US3979896A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-06 | 1982-05-08 | 1982-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-06 | 1986-05-08 | 1986-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-06 | 1990-05-08 | 1990-11-07 | $7700.00 | Window Closed / Lapsed |