Patent US3874339A successfully refreshed from Google Patents.
US3874339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-pull animal leash mechanism
Assignee: Individual
•
Filing: 1974-06-26
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Granted: 1975-04-01
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Expires: 1994-06-26
Abstract
Abstract An anti-pull leash mechanism includes a collar for an animal (such as a dog), a device attached to the collar, and a leash for coupling to such device. When the animal pulls excessively on the leash, the device, by means of electric probes, provides electrical shocks to the animal, thus causing the animal to refrain from excessive pulling. The device includes a shock circuit and a spring actuated switch, so that, when the animal pulls excessively hard beyond a predetermined force, the spring actuated switch actuates the shock circuit to provide shocks to the animal.
Inventors
- 👤 John Coulbourn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:54
CPC Classifications
A; A01; A01K; A01K27/00; A01K27/009; A01K15/00; A01K15/02; A01K15/021; A01K15/023; Y; Y10; Y10S; Y10S119/00; Y10S119/908
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
137 words
A device, suitable for attachment to an animal collar, for automatically preventing the animal from pulling excessively on a leash, comprising a. a housing adapted for attachment to an animal collar; b. a pair of electrodes adapted to contact the body of an animal; c. an electronic circuit, housed within said housing, and coupled to said electrodes, for providing electronic pulses to said electrodes; d. means for coupling said electrodes to said circuit; e. means for providing a power source to said electronic circuit; and f. means for actuating said electronic circuit including a spring loaded switch affixed to said circuit and including means external to said housing for coupling to a leash, whereby, when said spring loaded switch has a force exerted thereupon, exceeding a predetermined lightly applied force, electronic pulses are provided to said electrodes.
Claim 2
Independent Claim
137 words
A device, suitable for attachment to an animal collar, for automatically preventing the animal from pulling excessively on a leash, comprising a. a housing adapted for attachment to an animal collar; b. a pair of electrodes adapted to contact the body of an animal; c. an electronic circuit, housed within said housing, and coupled to said electrodes, for providing electronic pulses to said electrodes; d. means for coupling said electrodes to said circuit; e. means for providing a power source to said electronic circuit; and f. means for actuating said electronic circuit including a spring loaded switch affixed to said circuit and including means external to said housing for coupling to a leash, whereby, when said spring loaded switch has a force exerted thereupon, exceeding a predetermined lightly applied force, electronic pulses are provided to said electrodes.
Claim 3
Dependent Claim
21 words
The device as recited in claim 1 wherein said means for providing a power source includes a battery within said housing.
Claim 4
Dependent Claim
22 words
The device as recited in claim 1 wherein said means external to said housing for coupling to a leash includes a hook.
Claim 5
Dependent Claim
53 words
The device as recited in claim 1 further comprising an animal collar, and wherein said housing is affixed to one portion of said collar, and said electrodes are coupled to another portion of said collar at an interior portion thereof so that said electrodes physically contact the animal when said collar is worn.
Claim 6
Dependent Claim
21 words
The device as recited in claim 4 wherein said means for providing a power source includes a battery within said housing.
Claim 7
Dependent Claim
22 words
The device as recited in claim 4 wherein said means external to said housing for coupling to a leash includes a hook.
Claim 8
Dependent Claim
46 words
The device as recited in claim 4 wherein said electrodes are located on said collar diametrically opposite from said housing, whereby said animal, when pulling on a leash, pulls in a manner such that said electrodes make a firm contact with the body of said animal.
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) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |