Patent US3705489A successfully refreshed from Google Patents.
US3705489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wire rope with permanently lubricated core
Assignee: Amsted Industries Inc
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Filing: 1970-12-24
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Granted: 1972-12-12
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Expires: 1990-12-24
Abstract
Abstract A wire rope having an independent wire rope core or wire strand core has a heavy lubrication permanently encapsulated within the core by a thick plastic sheath or jacket surrounding the core and spacing the outer strands of the rope from the component wires or strands of the core.
Inventors
- 👤 Carl W Smollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:26
CPC Classifications
D; D07; D07B; D07B1/00; D07B1/16; D07B1/165; D07B1/06; D07B1/0673; D07B1/0686; D07B1/14; D07B1/141; D07B1/144; D07B2201/00; D07B2201/10; D07B2201/1028; D07B2201/1036; D07B2201/20; D07B2201/2071; D07B2201/2073; D07B2201/2074; D07B2205/00; D07B2205/50
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
An operating wire rope having an improved working life comprising: a. a flexible wire core, b. a quantity of wire lubricant in said core, c. a flexible plastic jacket closely surrounding said core and adapted to substantially permanently seal said wire lubricant within said wire core to continuOusly immerse the wires of said wire core in a permanent lubrication; and d. a series of wire strands laid about said wire core and supported upon the outer surface of said plastic jacket.
Claim 2
Dependent Claim
81 words
An operating wire rope having an improved working life comprising: a. a flexible wire core, b. a quantity of wire lubricant in said core, c. a flexible plastic jacket closely surrounding said core and adapted to substantially permanently seal said wire lubricant within said wire core to continuOusly immerse the wires of said wire core in a permanent lubrication; and d. a series of wire strands laid about said wire core and supported upon the outer surface of said plastic jacket.
Claim 3
Dependent Claim
37 words
A wire rope according to claim 1 wherein said flexible plastic jacket is comprised of a substantially impervious plastic layer surrounding said core adapted to contain said wire lubricant within said core and cushion the overlying strands.
Claim 4
Dependent Claim
16 words
A wire rope according to claim 2 wherein said plastic jacket is extruded upon said core.
Claim 5
Dependent Claim
16 words
A wire rope according to claim 2 wherein said core is an independent wire rope core.
Claim 6
Dependent Claim
15 words
A wire rope according to claim 2 wherein said core is a wire strand core.
Claim 7
Dependent Claim
18 words
A wire rope according to claim 1 wherein said flexible jacket comprises a dense layer of plastic fibers.
Claim 8
Dependent Claim
19 words
A wire rope according to claim 6 wherein said layer of plastic fibers is a closely packed braided layer.
Claim 9
Dependent Claim
30 words
A wire rope according to claim 6 wherein said outer strands are seated into the surface of the fibrous sheath but are cushioned and spaced thereby from the underlying core.
Claim 10
Dependent Claim
47 words
A wire rope according to claim 1 wherein said flexible plastic jacket is comprised of a first substantially impervious plastic tube immediately surrounding said core and a second layer of plastic fibers surrounding said plastic tube and cushioning said series of wire strands laid about said core.
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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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |