US4781847A
Expired / Lapsed
US
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Aqueous lubricant
Assignee: American Polywater Corp
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Filing: 1986-05-08
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Granted: 1988-11-01
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Expires: 2006-05-08
Abstract
Abstract An improved aqueous gel lubricant comprising water and about 0.5 to 25 wt-% of at least one 200 to 8,000 molecular weight polyalkylene glycol such as polyethylene glycol and polypropylene glycol. Preferably, the lubricant further comprises about 0.01 to 10 wt-% viscosity modifier such as a water soluble resin, natural gum, or cellulosic compound. The lubricant may further contain an effective antioxidizing, preserving, solvating, suspending and freezing point depressing amount of a hydroxy compound.
Inventors
- 👤 Gene C. Weitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:13
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M129/00; C10M129/02; C10M129/04; C10M129/06; C10M129/08; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M145/18; C10M145/24; C10M145/26; C10M145/28; C10M145/30; C10M145/40; C10M149/00; C10M149/02; C10M149/06; C10M159/00; C10M159/02; C10M2201/00; C10M2201/02; C10M2205/00; C10M2205/14; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2207/023; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/12; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/06; C10N; C10N2020/00; C10N2020/01; C10N2040/00; 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: 27
Claim 1
Independent Claim
63 words
A fatty-acid-free lubricant consisting essentially of: (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000 to 15,000; (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds; and (c) water.
Claim 2
Dependent Claim
63 words
A fatty-acid-free lubricant consisting essentially of: (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000 to 15,000; (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds; and (c) water.
Claim 3
Dependent Claim
18 words
The lubricant of claim 1 wherein the lubricant consists essentially of about 0.5 to 10 wt-% polyalkylene glycol.
Claim 4
Dependent Claim
40 words
The lubricant of claim 1 wherein the viscosity modifier consists essentially of: (i) about 10-80 wt-% polymeric polyelectrolyte acrylate compound, (ii) about 0-90 wt-% polyalkylene oxide compound, (iii) about 0-90 wt-% polyacrylamide compound, and (iv) about 0-90 wt-% cellulosic compound.
Claim 5
Dependent Claim
48 words
The lubricant of claim 3 wherein the polymeric polyelectrolyte acrylate compound is polyacrylic acid having a molecular weight of at least 3,000, the polyalkylene oxide compound is polyethylene oxide having a molecular weight of at least 300,000 and the polyacrylamide has a molecular weight of at least 100,000.
Claim 6
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 3 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 7
Dependent Claim
78 words
The lubricant of claim 1 wherein: (a) the polyalkylene glycol is about 0-50 wt-% polyethylene glycol having a molecular weight of about 1,000 to 15,000, and about 50-100 wt-% polypropylene glycol having a molecular weight of about 1,000 to 4,000; and (b) the viscosity modifier is about 10-80 wt-% polyacrylic acid having a molecular weight of at least 3,000, about 20-90 wt-% polyethylene oxide having a molecular weight of at least 300,000 and about 20-90 wt-% cellulosic compound.
Claim 8
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 6 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 9
Dependent Claim
83 words
The lubricant of claim 1 wherein: (a) the polyalkylene glycol is about 0-50 wt-% polyethylene glycol having a molecular weight of about 1,000 to 15,000 and about 50-100 wt-% polypropylene glycol having a molecular weight of about 1,000 to 4,000; and (b) the viscosity modifier is about 10-80 wt-% polyacrylic acid having a molecular weight of at least 3,000 and about 20-90 wt-% copolymer of acrylamide and an acrylic monomer having a pendent carboxyl group, having a molecular weight of at least 100,000.
Claim 10
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 8 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 11
Dependent Claim
65 words
The lubricant of claim 1 wherein: (a) the polyalkylene glycol is about 0-50 wt-% polyethylene glycol having a molecular weight of about 1,000 to 15,000 and about 50-100 wt-% polypropylene glycol having a molecular weight of about 1,000 to 4,000; and (b) the viscosity modifier is about 10-80 wt-% polyacrylic acid having a molecular weight of at least 3,000 and about 20-90 wt-% cellulosic compound.
Claim 12
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 10 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 13
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 1 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 14
Dependent Claim
40 words
The lubricant of claim 1 wherein the viscosity modifier consists essentially of: (i) about 0-80 wt-% polymeric polyelectrolyte acrylate compound, (ii) about 20-90 wt-% polyalkylene oxide compound, (iii) about 0-90 wt-% polyacrylamide compound, and (iv) about 0-90 wt-% cellulosic compound.
Claim 15
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 13, to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 16
Dependent Claim
40 words
The lubricant of claim 1 wherein the viscosity modifier consists essentially of: (i) about 0-80 wt-% polymeric polyelectrolyte acrylate compound, (ii) about 0-90 wt-% polyalkylene oxide compound, (iii) about 0-90 wt-% polyacrylamide compound, and (iv) about 20-90 wt-% cellulosic compound.
Claim 17
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 15 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 18
Dependent Claim
48 words
The lubricant of claim 1 wherein the polymeric polyelectrolyte acrylate compound is polyacrylic acid having a molecular weight of at least 3,000, the polyalkylene oxide compound is polyethylene oxide having a molecular weight of at least 300,000 and the polyacrylamide has a molecular weight of at least 100,000.
Claim 19
Dependent Claim
73 words
The lubricant of claim 1 wherein: (a) the polyalkylene glycol is about 0-50 wt-% polyethylene glycol having a molecular weight of about 1,000 to 15,000 and about 50-100 wt-% polypropylene glycol having a molecular weight of about 1,000 to 4,000; and (b) the viscosity modifier is about 10-80 wt-% polyacrylic acid having a molecular weight of at least 3,000 and about 20-90 wt-% polyethylene oxide having a molecular weight of at least 300,000.
Claim 20
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 18 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 21
Dependent Claim
76 words
A fatty-acid-free lubricant consisting essentially of: (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000-15,000; (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds; (c) an effective antioxidant, solubilizing and freezing point depressing amount of a C 1-6 alcohol; and (d) water.
Claim 22
Dependent Claim
76 words
A fatty-acid-free lubricant consisting essentially of: (a) about 0.5 to 25 wt-% polyalkylene glycol having a molecular weight of about 1,000-15,000; (b) an effective gelling amount of a viscosity modifier consisting essentially of a mixture of at least two components selected from the group consisting of polymeric polyelectrolyte acrylate compounds, polyalkylene oxide compounds, polyacrylamide compounds and cellulosic compounds; (c) an effective antioxidant, solubilizing and freezing point depressing amount of a C 1-6 alcohol; and (d) water.
Claim 23
Dependent Claim
22 words
The lubricant of claim 20 wherein the C 1-6 alcohol is methanol, ethanol, isopropanol, ethylene glycol, propylene glycol, amyl alcohol, or n-hexanol.
Claim 24
Dependent Claim
23 words
The lubricant of claim 21 wherein the lubricant is about 10 to 80 wt-% C 1-6 alcohol to form a freeze resistant lubricant.
Claim 25
Dependent Claim
36 words
A method of lubricating cable to be installed in a conduit comprising the step of applying the lubricant of claim 20 to the interface between cable and conduit during introduction of the cable into the conduit.
Claim 26
Dependent Claim
40 words
The lubricant of claim 20 wherein the viscosity modifier consists essentially of: (i) about 10-80 wt-% polymeric polyelectrolyte acrylate compound, (ii) about 0-90 wt-% polyalkylene oxide compound, (iii) about 0-90 wt-% polyacrylamide compound, and (iv) about 0-90 wt-% cellulosic compound.
Claim 27
Dependent Claim
48 words
The lubricant of claim 24 wherein the polymeric polyelectrolyte acrylate compound is polyacrylic acid having a molecular weight of at least 3,000, the polyalkylene oxide compound is polyethylene oxide having a molecular weight of at least 300,000, and the polyacrylamide has a molecular weight of at least 100,000.
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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) | 1991-11-01 | 1992-05-02 | 1992-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-01 | 1996-05-02 | 1996-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-01 | 2000-05-02 | 2000-11-01 | $7700.00 | Window Closed / Lapsed |