US4196890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security fence
Assignee: ELECTROREPS SA Pty Ltd
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Filing: 1978-11-09
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Granted: 1980-04-08
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Expires: 1998-11-09
Abstract
Abstract A security fence is described comprising a plurality of barbed wires supported on spaced posts and extending in a generally parallel horizontal direction to the ground surface, alternate wires being supported on opposite sides of each post in the manner of a basket weave configuration such that the wires in plan view cross each other. Alternate wires are connected to a source of electric power, with the intermediate wires being earthed.
Inventors
- 👤 Gunther D. Einhorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:23
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/12; G08B13/122; E; E04; E04H; E04H17/00; E04H17/02; E04H17/04; E04H17/045
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
51 words
A security fence comprising a plurality of barbed wires supported on spaced posts and extending in a generally parallel direction to the ground surface, the wires being supported on opposite sides of each post such that the wires in plan view cross each other, said posts being wrapped with barbed wire.
Claim 2
Dependent Claim
51 words
A security fence comprising a plurality of barbed wires supported on spaced posts and extending in a generally parallel direction to the ground surface, the wires being supported on opposite sides of each post such that the wires in plan view cross each other, said posts being wrapped with barbed wire.
Claim 3
Dependent Claim
28 words
A security fence as claimed in claim 1, in which alternate wires are located on opposite sides of each post in the manner of a basket weave configuration.
Claim 4
Dependent Claim
72 words
A security fence as claimed in claim 1 in which alternate wires are connected to a source of electric power with the intermediate wires being earthed, the alternate wires being connected in series from the source of electric power to an alarm circuit adapted to activate an alarm if any of the wires connected to the electrical power supply is cut or if any of them is contacted with an earth wire.
Claim 5
Dependent Claim
60 words
A security fence as claimed in claim 3, in which alternate wires are electrically connected by means of a plurality of further wires each connected to a pair of alternate wires at their opposite ends in a staggered relationship to form a series circuit therewith, each of the further wires being looped around the respective intermediate wire without touching it.
Claim 6
Dependent Claim
23 words
A security fence as claimed in claim 1, in which the wires are secured to corner posts by means of eyebolts bolted therethrough.
Claim 7
Dependent Claim
30 words
A security fence as claimed in claim 5, in which barbed wire wrapped strand posts are secured to corner posts parallel and adjacent to a line of eyelets of eyebolts.
Claim 8
Dependent Claim
15 words
A security fence as claimed in claim 1, in which the posts are wooden posts.
Claim 9
Dependent Claim
24 words
A security fence as claimed in claim 1, in which the posts are metal posts, and the wires attached thereto are electrically insulated therefrom.
References Cited (Backward Citations)
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US642109A
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US762645A
Cited
US2350290A
Cited
FR906529A
Cited
US2422012A
Cited
US2437613A
Cited
GB1450187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |