Patent US4728749A successfully refreshed from Google Patents.
US4728749A
Expired / Lapsed
US
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Utility pole assembly
Assignee: RFD Consultants Pty Ltd
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Filing: 1985-08-27
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Granted: 1988-03-01
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Expires: 2005-08-27
Abstract
Abstract Ceramic elements which can be clamped together by means of a tension rod so as to form a cross-arm assembly for a utility pole. The elements are provided with recesses which receive electrical conductors, with clips being provided so as to retain the conductors within the recesses. The elements thus provide physical support for the conductors and also form the insulating medium for the conductors.
Inventors
- 👤 John K. Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:38
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/14; H01B17/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
155 words
A utility pole assembly, said assembly comprising: a utility pole, a cross-arm, a bracket connecting the cross-arm to the pole and a pair of stays which extend from the pole to spaced locations on the cross-arm, said cross-arm comprising a plurality of ceramic elements each including a bore therethrough, said elements being arranged so that their bores are aligned, said cross-arm including spacing means located between adjacent elements, each spacing means having openings therethrough, said cross-arm further including a tension member which passes through said bores and said openings and clamps said elements together, and wherein each element comprises a body having a top portion with conductor support means for supporting an electrical conductor which in use extends transversely relative to the cross-arm, said bracket having an opening therein which is generally complementary in shape to the body so that the cross-arm can extend therethrough and be firmly clamped by the bracket to the pole.
Claim 2
Dependent Claim
155 words
A utility pole assembly, said assembly comprising: a utility pole, a cross-arm, a bracket connecting the cross-arm to the pole and a pair of stays which extend from the pole to spaced locations on the cross-arm, said cross-arm comprising a plurality of ceramic elements each including a bore therethrough, said elements being arranged so that their bores are aligned, said cross-arm including spacing means located between adjacent elements, each spacing means having openings therethrough, said cross-arm further including a tension member which passes through said bores and said openings and clamps said elements together, and wherein each element comprises a body having a top portion with conductor support means for supporting an electrical conductor which in use extends transversely relative to the cross-arm, said bracket having an opening therein which is generally complementary in shape to the body so that the cross-arm can extend therethrough and be firmly clamped by the bracket to the pole.
Claim 3
Dependent Claim
29 words
A utility pole assembly as claimed in claim 1, wherein the underside of each element includes a shallow concave recess which extends in the longitudinal direction of the cross-arm.
Claim 4
Dependent Claim
17 words
A utility pole assembly as claimed in claim 1 wherein each body is generally cuboidal in shape.
Claim 5
Dependent Claim
39 words
A utility pole assembly as claimed in claim 3 wherein each conductor support means includes a recess which extends transversely relative to the longest dimension of the body and wherein, in use, a conductor is located in the recess.
Claim 6
Dependent Claim
50 words
A utility pole assembly as claimed in claim 4 wherein each recess is open to the upper surface of the top portion and the conductor support means includes a clip which is resiliently engageable with the top portion and operates in use to hold a conductor captive in the recess.
Claim 7
Dependent Claim
25 words
A utility pole assembly as claimed in claim 5 wherein the top portion includes a rounded head and the clip is slidable along the head.
Claim 8
Dependent Claim
35 words
A utility pole assembly as claimed in claim 1 wherein each spacing means comprises a pair of resilient washers and a spacing element sandwiched therebetween, the tension member passing through the washers and spacing element.
Claim 9
Dependent Claim
27 words
A utility pole assembly as claimed in claim 7 wherein said washers project above and below the top and bottom surfaces of the elements of the cross-arm.
Claim 10
Dependent Claim
33 words
A utility pole assembly as claimed in claim 1 wherein each stay is connected to the cross-arm by means of a stay mounting bracket which is clamped between adjacent elements of the cross-arm.
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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) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |