US4673516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous hydrogel lubricant
Assignee: Dura Line Corp
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Filing: 1986-09-02
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Granted: 1987-06-16
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Expires: 2006-09-02
Abstract
Abstract Disclosed is an aqueous gel lubricant, and a method for formulating the lubricant, the lubricant having, as its basic and essential components, a major proportion of water, an effective gelling amount of an anionic heteropolysaccharide, and an effective lubricating amount of an anionic emulsion of a polysiloxane polymer. Additions of effective lubricating amounts of suspended microspherical beads enhance the lubricity and a suitable anti-freeze agent enhances the lubricant's effectiveness for low temperature applications. The lubricant is particularly adapted to facilitate the installation of cables within outer ducts or conduits.
Inventors
- 👤 Johnny D. Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:02
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M143/00; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M145/40; C10M147/00; C10M147/02; C10M155/00; C10M155/02; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/02; C10M2205/04; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/12; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/043; C10M2229/044; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10M2229/051; C10M2229/052; C10M2229/053; C10M2229/054; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
34 words
An aqueous gel lubricant, comprising: (a) a major proportion of water; (b) an effective gelling amount of an anionic heteropolysaccharide; and (c) an effective lubricating amount of an anionic emulsion of a polysiloxane polymer.
Claim 2
Dependent Claim
34 words
An aqueous gel lubricant, comprising: (a) a major proportion of water; (b) an effective gelling amount of an anionic heteropolysaccharide; and (c) an effective lubricating amount of an anionic emulsion of a polysiloxane polymer.
Claim 3
Dependent Claim
20 words
The aqueous gel lubricant as set out in claim 1 further comprising an effective lubricating amount of anti-friction microspherical beads.
Claim 4
Dependent Claim
15 words
The aqueous gel lubricant as set out in claim 2 further comprising an anti-freeze composition.
Claim 5
Dependent Claim
38 words
The aqueous gel lubricant as set out in claim 1 wherein said anionic heteropolysaccharide is a carbohydrate comprising 2.8-7.5% o-Acyl groups; 11.6-14.9% glucoronic acid, and neutral sugars mannose, glucose and rhamnose in an approximate molar ratio of 1:2:2.
Claim 6
Dependent Claim
16 words
The aqueous gel lubricant as set out in claim 4 wherein said polysiloxane polymer is polydimethylsiloxane.
Claim 7
Dependent Claim
22 words
The aqueous gel lubricant as set out in claim 4 wherein the molecular weight of the polysiloxane polymer is greater than 4000.
Claim 8
Dependent Claim
33 words
The aqueous gel lubricant as set out in claim 2 wherein said anti-friction microspherical beads are of a material selected from the group consisting of polydivinyl benzene, polycinnamene, polyacrylate, polyflurocarbon, and polyalkane composition.
Claim 9
Independent Claim
78 words
A method for reducing the coefficient of friction between a cable and an outer conduit through which the cable is pulled, comprising: preparing an aqueous gel lubricant of a major proportion of water, an effective gelling amount of an anionic heteropolysaccharide, and an effective lubricating amount of an anionic emulsion of a polysiloxane polymer; and applying said aqueous gel lubricant at the interface of the outside surface of said cable and the internal surface of said outer conduit.
Claim 10
Independent Claim
78 words
A method for reducing the coefficient of friction between a cable and an outer conduit through which the cable is pulled, comprising: preparing an aqueous gel lubricant of a major proportion of water, an effective gelling amount of an anionic heteropolysaccharide, and an effective lubricating amount of an anionic emulsion of a polysiloxane polymer; and applying said aqueous gel lubricant at the interface of the outside surface of said cable and the internal surface of said outer conduit.
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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) | 1990-06-15 | 1990-12-15 | 1991-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-15 | 1994-12-15 | 1995-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-15 | 1998-12-15 | 1999-06-16 | $7700.00 | Window Closed / Lapsed |