Patent US4525701A successfully refreshed from Google Patents.
US4525701A
Expired / Lapsed
US
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Security alarm arrangement
Assignee: TRANSMISSION & DISTRIBUTION EQUIPMENT Pty Ltd
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Filing: 1982-08-25
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Granted: 1985-06-25
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Expires: 2002-08-25
Abstract
Abstract This invention relates to a security alarm arrangement which embodies a substantially helically extending deterrent wire generally of a coiled configuration. At least one longitudinally extending electrically conductive wire passes through the helical wire configuration in the general direction of the axis thereof. The helical wire configuration and the longitudinally extending wire are both connected to an alarm system which will trigger should the two wires be brought into contact.
Inventors
- 👤 Michael P. Leih
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:51
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/12; G08B13/122
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A security installation including a deterrent wire arranged to substantially describe a hollow cylinder in general configuration and at least one longitudinally extending, electrically conductive wire passing through the cylindrical deterrent wire in the general direction of the axis thereof, the longitudinally extending wire and deterrent wire being connected to an alarm system such that any contact between the two triggers the alarm system.
Claim 2
Dependent Claim
64 words
A security installation including a deterrent wire arranged to substantially describe a hollow cylinder in general configuration and at least one longitudinally extending, electrically conductive wire passing through the cylindrical deterrent wire in the general direction of the axis thereof, the longitudinally extending wire and deterrent wire being connected to an alarm system such that any contact between the two triggers the alarm system.
Claim 3
Dependent Claim
20 words
A security installation as claimed in claim 1 wherein the longitudinally extending wire is at a potential different from earth.
Claim 4
Dependent Claim
16 words
A security installation as claimed in claim 2 wherein the deterrent wire is at earth potential.
Claim 5
Dependent Claim
30 words
A security installation as claimed in any preceding claim wherein there are a plurality of longitudinally extending wires which extend in generally the axial direction of the cylindrical deterrent wire.
Claim 6
Dependent Claim
36 words
A security installation as claimed in any one of claims 1 to 3 wherein the longitudinally extending wire positioned within the cylindrical deterrent wire configuration is located on the upper edge of a fence or wall.
Claim 7
Dependent Claim
22 words
A security installation as claimed in claim 5 in which the cylindrical configuration of the deterrent wire is formed by coiled wire.
Claim 8
Dependent Claim
15 words
A security installation as claimed in claim 1 wherein the deterrent wire comprises barbed wire.
References Cited (Backward Citations)
US697259A
Cited
US3504892A
Cited
US3778805A
Cited
US4041265A
Cited
US4196890A
Cited
SU938853A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |