US4918883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for composite pole repair
Assignee: R & D DEVELOPMENT
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Filing: 1988-06-14
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Granted: 1990-04-24
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Expires: 2008-06-14
Abstract
Abstract This invention provides a method for repair for poles which have beem damaged by environmental effects, which is easily transportable, simple to install, and easily adaptable to many classes of poles. The method involves excavating around the pole, cleaning the surface of the pole, pumping a fumigant into the pole, applying a bonding agent to the clean surface, and then applying strips of a composite fiberglass mat and resin to the pole in a controlled manner until a desired casement thickness has been achieved. The repair is completed by application of an ultraviolet resistant coating to the pole.
Inventors
- 👤 Richard A. Owen
- 👤 Richard C. Hannay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:48
CPC Classifications
E; E02; E02D; E02D5/00; E02D5/22; E02D5/60; E02D27/00; E02D27/32; E02D27/42; E02D31/00; E02D31/06; E02D5/226; E04; E04H; E04H12/00; E04H12/22; E04H12/2292
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
177 words
A composite structural encasement apparatus for bonding to wooden poles for transfer of tensile stresses comprising: (a) a plurality of woven glass fiber mat strips, arranged with the longer dimension substantially parallel to the longitudinal axis of the pole, wherein the percentage of the woven fibers running along the length of the strops and running parallel to the length of the pole is within the range of from 50% to 80% of the total fibers, and wherein the remaining fibers are arranged so that 1/2 of the remaining fibers, from 10% to 25%, are placed at a 45° angle to the longitudinal fibers, and the remaining 10% to 25% percent of the woven fibers are placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers; (b) a liquid resin for saturation of the woven mat strips which subsequently hardens to form, in combination with the mat strips, a fiberglass encasement repair cylinder for a pole; and, (c) an ultraviolet resistant coating for application to the exterior of the encasement.
Claim 2
Dependent Claim
177 words
A composite structural encasement apparatus for bonding to wooden poles for transfer of tensile stresses comprising: (a) a plurality of woven glass fiber mat strips, arranged with the longer dimension substantially parallel to the longitudinal axis of the pole, wherein the percentage of the woven fibers running along the length of the strops and running parallel to the length of the pole is within the range of from 50% to 80% of the total fibers, and wherein the remaining fibers are arranged so that 1/2 of the remaining fibers, from 10% to 25%, are placed at a 45° angle to the longitudinal fibers, and the remaining 10% to 25% percent of the woven fibers are placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers; (b) a liquid resin for saturation of the woven mat strips which subsequently hardens to form, in combination with the mat strips, a fiberglass encasement repair cylinder for a pole; and, (c) an ultraviolet resistant coating for application to the exterior of the encasement.
Claim 3
Dependent Claim
14 words
The invention of claim 1 wherein the resin composite is a two component epoxy.
Claim 4
Dependent Claim
12 words
The invention of claim 1 wherein the resin component is a polyester.
Claim 5
Dependent Claim
11 words
The invention of claim 1 wherein the bonding agent is epoxy.
Claim 6
Dependent Claim
11 words
The invention of claim 1 wherein the bonding agent is urethane.
Claim 7
Dependent Claim
12 words
The invention of claim 1 wherein the bonding agent is a polyester.
Claim 8
Dependent Claim
14 words
The invention of claim 1 wherein the bonding agent is a two component epoxy.
Claim 9
Dependent Claim
14 words
The invention of claim 4 wherein the resin composite is a two component epoxy.
Claim 10
Dependent Claim
12 words
The invention of claim 4 wherein the resin composite is a polyester.
Claim 11
Dependent Claim
14 words
The invention of claim 5 wherein the resin composite is a two component epoxy.
Claim 12
Dependent Claim
12 words
The invention of claim 5 wherein the resin composite is a polyester.
Claim 13
Dependent Claim
14 words
The invention of claim 6 wherein the resin composite is a two component epoxy.
Claim 14
Dependent Claim
12 words
The invention of claim 6 wherein the resin composite is a polyester.
Claim 15
Dependent Claim
13 words
The invention of claim 7 wherein the resin composite is two component epoxy.
Claim 16
Dependent Claim
12 words
The invention of claim 7 wherein the resin composite is a polyester.
Claim 17
Dependent Claim
60 words
The invention of claim 8 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 18
Dependent Claim
60 words
The invention of claim 9 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 19
Dependent Claim
60 words
The invention of claim 10 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 20
Dependent Claim
60 words
The invention of claim 11 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 21
Dependent Claim
60 words
The invention of claim 14 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 22
Dependent Claim
60 words
The invention of claim 15 wherein 50% of the woven fibers run along the length of the strips and 25% of the woven fibers are placed at a 45° angle to the longitudinal fibers, with the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 23
Dependent Claim
21 words
The invention of claim 1 where the woven glass mat material comprises strips cut from a roll of woven glass mat.
Claim 24
Dependent Claim
72 words
The invention of claim 1 where the woven glass mat strips are woven from fibers with approximately 50% of the woven fibers running along the length of the strip and with approximately 25% of the woven fibers placed at a 45° angle to the longitudinal fibers, and the remaining 25% of the woven fibers placed at an opposite 45° angle to the longitudinal fibers relative to the first set of angled fibers.
Claim 25
Dependent Claim
13 words
The invention of claim 1 where the resin is a two component epoxy.
Claim 26
Dependent Claim
11 words
The invention of claim 1 where the resin is a polyester.
Claim 27
Dependent Claim
16 words
The invention of claim 24 where the two component epoxy is Epoxide Resin and polyamide catalyst.
Claim 28
Dependent Claim
14 words
The invention of claim 25 where the polyester is unsaturated polyester resin in styrene.
Claim 29
Dependent Claim
14 words
The invention of claim 1 where the ultraviolet resistant coating is a urethane coating.
Claim 30
Dependent Claim
25 words
The invention of claim 1 further comprising a bonding agent for application to the pole prior to the installation of the saturated woven mat strips.
Claim 31
Dependent Claim
15 words
The invention of claim 24 where the bonding agent is epoxide resin and polyamide catalyst.
Claim 32
Dependent Claim
17 words
The invention of claim 29 wherein the bonding agent is polymeric isocyanate and polyol with hydrocarbon extenders.
Claim 33
Dependent Claim
17 words
The invention of claim 1 further comprising a fumigant pumped into the pole to arrest biological agents.
Claim 34
Dependent Claim
17 words
The invention of claim 29 further comprising a fumigant pumped into the pole to arrest biological agents.
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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) | 1993-04-23 | 1993-10-23 | 1994-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-23 | 1997-10-23 | 1998-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-23 | 2001-10-23 | 2002-04-24 | $7700.00 | Window Closed / Lapsed |