Patent US3835238A successfully refreshed from Google Patents.
US3835238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiral conductor cover
Assignee: AB Chance Co
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Filing: 1973-06-18
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Granted: 1974-09-10
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Expires: 1993-06-18
Abstract
Abstract An improved electrical conductor cover is provided which is operable to be positioned in enclosing relationship to portions of highly energized conductors in order to protect linemen or other working in the vicinity thereof. The cover is fabricated from an elongated, continuous sheet of electrically insulative synthetic plastic material and is shaped to present a generally spiral cross section with inner and outer spirals of substantially equal length. Both the inner and outer spirals are configured to telescopically engage and interconnect with a complementary adjacent conductor cover or other piece of cover-up equipment such as insulator covers of varying types, without the need of separate connection structures. By virtue of the fact that the inner spiral extends the entire length of the cover and interconnects with a similar member of another conductor cover or other piece of cover-up equipment, a conductor received therein is completely encased in an insulative sleeve of plastic material without gaps along the length thereof, and consequently the cover is capable of effectively insulating conductors energized to very high levels.
Inventors
- 👤 E West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:52
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G7/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
289 words
A removable protective device for use in insulating an elongated, energized conductor and comprising: an elongated, continuous sheet of relatively thin electrically insulative material shaped to present a spiral-like cross section with a series of connected, arcuate, spiral-like convolutions each spaced from an adjacent convolution a distance at least equal to the diameter of said conductor to provide an arcuate passageway for the conductor during installation of the device, the latter including: an arcuate outer wall portion of configuration to substantially circumscribe the section of said conductor to be received therein, and an arcuate inner wall portion having an inner concave face dimensioned to at least partially wrap about the conductor to provide insulation for the latter and to suspend the device from the conductor, said inner wall portion being spaced from the outer, longitudinally extending edge of the outer wall a distance to provide a conductor entryway communicating with said conductor passageway, the opposed ends of said inner and outer wall portions being shaped to present respective male and female connection ends respectively for complemental interfitting of at least a pair of said devices in aligned end-to-end relationship with the male ends of each device being telescopically received in adjacent female ends of the proximal device, said inner wall portion including smooth generally semicylindrical segments on the opposed male and female ends thereof, the semicylindrical segment of said female end being complemental with and of greater radial dimensions than the corresponding semicylindrical segment on said male end, said outer wall portion including generally frustoconical shoulder-defining segments on the opposed male and female ends thereof, the shoulder-defining segment of said female end being complemental with and of greater radial dimensions than the corresponding shoulder-defining segment on said male end.
Claim 2
Dependent Claim
289 words
A removable protective device for use in insulating an elongated, energized conductor and comprising: an elongated, continuous sheet of relatively thin electrically insulative material shaped to present a spiral-like cross section with a series of connected, arcuate, spiral-like convolutions each spaced from an adjacent convolution a distance at least equal to the diameter of said conductor to provide an arcuate passageway for the conductor during installation of the device, the latter including: an arcuate outer wall portion of configuration to substantially circumscribe the section of said conductor to be received therein, and an arcuate inner wall portion having an inner concave face dimensioned to at least partially wrap about the conductor to provide insulation for the latter and to suspend the device from the conductor, said inner wall portion being spaced from the outer, longitudinally extending edge of the outer wall a distance to provide a conductor entryway communicating with said conductor passageway, the opposed ends of said inner and outer wall portions being shaped to present respective male and female connection ends respectively for complemental interfitting of at least a pair of said devices in aligned end-to-end relationship with the male ends of each device being telescopically received in adjacent female ends of the proximal device, said inner wall portion including smooth generally semicylindrical segments on the opposed male and female ends thereof, the semicylindrical segment of said female end being complemental with and of greater radial dimensions than the corresponding semicylindrical segment on said male end, said outer wall portion including generally frustoconical shoulder-defining segments on the opposed male and female ends thereof, the shoulder-defining segment of said female end being complemental with and of greater radial dimensions than the corresponding shoulder-defining segment on said male end.
Claim 3
Dependent Claim
36 words
The protective device of claim 1 wherein the leading edge of said radially enlarged end of said inner wall portion is angularly cut to facilitate insertion therewithin of the male end of an adjacent protective device.
Claim 4
Dependent Claim
144 words
The protective device of claim 1 wherein the generally frustoconical shoulder-defining segment on the female end of said outer wall portion comprises: a first frustoconical section disposed at the extreme end of the device with the generally circular edge thereof of greatest diameter defining the leading edge of said female end; a second frustoconical section communicating with said first section, said first aNd second sections being interconnected along the respective generally circular edges thereof of least diameter; and a third frustoconical section communicating with said second section and connecting the latter to the remainder of said outer wall portion, said second and third sections being connected along the respective generally circular edges thereof of greatest diameter, whereby, the second and third frustoconical sections cooperatively define an annular, radially enlarged, inwardly facing, recess defining portion spaced inwardly from the leading edge of the female end.
Claim 5
Dependent Claim
119 words
The protective device of claim 3 wherein the generally frustoconical shoulder-defining segment on the male end of said outer wall portion comprises: a fourth frustoconical section positioned at the extreme male end of the device with the generally circular edge thereof of least diameter defining the leading edge of said male end; and a fifth frustoconical section communicating with said fourth section and interconnecting the latter with the remainder of said outer wall portion, said fourth and fifth sections being connected along the respective generally circular edges thereof of greatest diameter, whereby, the fourth and fifth frustoconical sections cooperatively define an annular, radially expanded collar with the apex thereof spaced inwardly from the leading edge of said male end.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |