US4316232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric fence controllers
Assignee: DONAGHYS INDUSTRIES Ltd A Co OF NEW ZEALAND
•
Filing: 1980-05-05
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Granted: 1982-02-16
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Expires: 2000-05-05
Abstract
Abstract An apparatus to energize electrical fences is disclosed which provides pulses at random or irregular intervals in order that animals maintained in such a fence do not become accustomed to a particular pattern.
Inventors
- 👤 Dougald S. M. Phillips
- 👤 Carol L. E. Phillips
- 👤 David L. D. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:51
CPC Classifications
H; H05; H05C; H05C1/00; H05C1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
An electric fence energiser capable of supplying pulse sequence to one or more electric fences, said electric fence energiser including controlling means to provide in use during normal operation an irregular pulse sequence the composition of which is unpredictable to an animal.
Claim 2
Dependent Claim
42 words
An electric fence energiser capable of supplying pulse sequence to one or more electric fences, said electric fence energiser including controlling means to provide in use during normal operation an irregular pulse sequence the composition of which is unpredictable to an animal.
Claim 3
Dependent Claim
31 words
An electric fence energiser as claimed in claim 1 wherein said pulse sequence comprises groups of relatively closely spaced pulses separated by time gaps between said groups of closely spaced pulses.
Claim 4
Dependent Claim
52 words
An electric fence energiser as claimed in either claim 1 or claim 2 wherein said fence energiser includes switching means to switch the energiser between a state in which a pulse sequence is despatched and a state in which a pulse sequence is not despatched to thereby provide said long time gaps.
Claim 5
Dependent Claim
52 words
An electric fence energiser as claimed in either claim 1 or claim 2 wherein said electric fence energiser sequentially applies pulses to a plurality of fence wires so that periods when pulses are being sent along one fence wire provide the relatively long time gaps on the or each other fence wire.
Claim 6
Dependent Claim
21 words
An electric fence energiser as claimed in either claim 1 or claim 2 wherein said time delays are of variable length.
Claim 7
Dependent Claim
22 words
An electric fence energiser as claimed in either claim 1 or claim 2 wherein the number of pulses per group is variable.
Claim 8
Dependent Claim
20 words
An electric fence energiser as claimed in claim 1 or claim 2 wherein the length of said pulses is variable.
Claim 9
Dependent Claim
35 words
An electric fence energiser as claimed in either claim 1 or claim 2 wherein one or more pulses having a low voltage intensity is followed by one or more pulses having a high voltage intensity.
Claim 10
Dependent Claim
26 words
An electric fence energiser as claimed in claim 8 wherein the number of low voltage intensity pulses substantially exceeds the number of high voltage intensity pulses.
References Cited (Backward Citations)
FR832927A
Cited
US2401815A
Cited
DE1033778B
Cited
GB1233892A
Cited
US3868545A
Cited
US3900770A
Cited
US4114185A
Cited
DE2724302A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |