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US4641727A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrically insulated temporary aerial platform

Assignee: DKS Co Ltd
•
Filing: 1986-05-12
•
Granted: 1987-02-10
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Expires: 2006-05-12
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Abstract

Abstract An electrically insulated aerial platform assembly for use by a lineman on or around utility poles is provided which is constructed to maintain the actual work platform in an electrically insulated condition relative to the utility pole itself and the pole connection hardware associated with the assembly. In preferred forms, the platform assembly includes a work platform presenting an elongated, substantially flat upper work surface where a lineman may by stand, sit or kneel, together with means for temporarily attaching the platform to the utility pole with the platform being electrically insulated from the pole during normal working conditions. Attachment of the platform to the pole is effected by means of an elongated, electrically insulative member secured to the platform and extending toward the pole, with the pole-connection structure coupled to the insulative member at the end thereof remote from the platform. The insulative member is of a length and is formed of an appropriate insulative material presenting a smooth outer surface for resisting accumulation of dirt or other contaminants thereon to maintain the electrical integrity of the overall assembly. Moreover, the insulative member preferably presents a downwardly sloping upper surface in order to dissuade the lineman from directly contacting and supporting himself on the member.

Inventors

  • 👤 Marvin D. McKelvy

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 23:21
CPC Classifications
E; E04; E04G; E04G5/00; E04G5/06; E04G5/067

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 152 words
A work platform assembly for temporary use by a lineman on or around utility poles, said platform assembly comprising: a work platform presenting an elongated surface where said lineman may stand, sit or kneel; and means for temporarily attaching said platform to a utility pole or the like, including an elongated electrically insulative member secured to and extending from said platform; and connection structure secured to the end of said insulative member remote from said platform for securing the member and platform to said pole or the like, said insulative member being of a length, and being formed of an insulative material presenting a smooth outer surface, for resisting accumulation of dirt thereon and maintaining said platform electrically insulated from said connection structure during normal working conditions, said insulative member further presenting a downwardly sloping upper surface in order to dissuade said lineman from directly contacting and supporting himself on the member.
Claim 2
Dependent Claim 152 words
A work platform assembly for temporary use by a lineman on or around utility poles, said platform assembly comprising: a work platform presenting an elongated surface where said lineman may stand, sit or kneel; and means for temporarily attaching said platform to a utility pole or the like, including an elongated electrically insulative member secured to and extending from said platform; and connection structure secured to the end of said insulative member remote from said platform for securing the member and platform to said pole or the like, said insulative member being of a length, and being formed of an insulative material presenting a smooth outer surface, for resisting accumulation of dirt thereon and maintaining said platform electrically insulated from said connection structure during normal working conditions, said insulative member further presenting a downwardly sloping upper surface in order to dissuade said lineman from directly contacting and supporting himself on the member.
Claim 3
Dependent Claim 19 words
The platform assembly of claim 1, said member comprising at least one elongated, electrically insulative, cylindrical synthetic resin rod.
Claim 4
Dependent Claim 18 words
The platform assembly of claim 2, said member comprising a pair of laterally spaced apart, parallel insulative rods.
Claim 5
Dependent Claim 34 words
The platform assembly of claim 1, said attachment means further including an elongated, downwardly extending reinforcing strut secured to said platform and adapted to engage said pole or the like beneath said connection structure.
Claim 6
Dependent Claim 21 words
The platform assembly of claim 1, including an upright safety rail assembly secured to said platform and extending above said surface.
Claim 7
Dependent Claim 11 words
The platform assembly of claim 1, said surface being substantially flat.

References Cited (Backward Citations)

US1026380A Cited
US1515831A Cited
US1915715A Cited
US2168111A Cited
US3396818A Cited
US3392802A Cited
US3749200A Cited
US4244445A Cited
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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) 1990-02-09 1990-08-11 1991-02-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-02-09 1994-08-11 1995-02-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-02-09 1998-08-11 1999-02-10 $7700.00 Window Closed / Lapsed

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