US3602360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damage control arrangement for conveyor belts
Assignee: Clouth Gummiwerke AG
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Filing: 1969-12-10
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Granted: 1971-08-31
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Expires: 1989-12-10
Abstract
Abstract An elongated conveyor belt of electrically nonconductive material has embedded therein electrically conductive inserts including at least one pair of electrical conductors extending over substantially the entire width of the belt and constituting an open circuit or an open induction loop, with the conductors being arranged so closely adjacent one another as to make contact if a breach occurs in the structural integrity of the belt. Impulse generating means, impulse receiving means and a source of electrical energy are provided and are operative for generating a signal indicating a breach in cooperation with the conductors when the latter contact one another.
Inventors
- 👤 Benjamin Halbach
- 👤 Karl-Hans Heinen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:15
CPC Classifications
B; B65; B65G; B65G43/00; B65G43/02
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
117 words
A damage control arrangement for conveyor belts, comprising an elongated conveyor belt of predetermined width and of electrically nonconductive material; electrically conductive insert means embedded in said belt, and including at least one pair of conductors extending over substantially said predetermined width and constituting an open circuit or induction loop and being arranged so closely adjacent as to contact one another upon occurrence of a breach in the structural integrity of said belt; and impulse generating means, impulse receiving means and a source of electric energy operative for generating, upon a breach in the structural integrity of said belt and in cooperation with said conductors in response to contact of the same, a signal indicating such breach.
Claim 2
Dependent Claim
117 words
A damage control arrangement for conveyor belts, comprising an elongated conveyor belt of predetermined width and of electrically nonconductive material; electrically conductive insert means embedded in said belt, and including at least one pair of conductors extending over substantially said predetermined width and constituting an open circuit or induction loop and being arranged so closely adjacent as to contact one another upon occurrence of a breach in the structural integrity of said belt; and impulse generating means, impulse receiving means and a source of electric energy operative for generating, upon a breach in the structural integrity of said belt and in cooperation with said conductors in response to contact of the same, a signal indicating such breach.
Claim 3
Dependent Claim
21 words
An arrangement as defined in claim 1, wherein at least one of said conductors comprises a plurality of electrically conductive filaments.
Claim 4
Dependent Claim
13 words
An arrangement as defined in claim 1, wherein said conductors are multiple-filament braids.
Claim 5
Dependent Claim
13 words
An arrangement as defined in claim 1, wherein said conductors are stranded conductors.
Claim 6
Dependent Claim
17 words
An arrangement as defined in claim 1, wherein said conductors are cables sheathed with steel wire strands.
Claim 7
Dependent Claim
18 words
An arrangement as defined in claim 1, wherein said conductors are braids composed of steel and copper filaments.
Claim 8
Dependent Claim
24 words
An arrangement as defined in claim 1, wherein at least one of said conductors is tubular and coaxially surrounds the other of said conductors.
Claim 9
Dependent Claim
38 words
An arrangement as defined in claim 1, said conveyor belt having opposite longitudinal edges, and wherein said conductors each have a portion exposed at one of said edges so as to facilitate accEss for testing by an operator.
Claim 10
Dependent Claim
61 words
An arrangement as defined in claim 1; said conductor means comprising a plurality of additional pairs of conductors similar to and spaced from the first-mentioned pair lengthwise of said belt; and electrically conductive connecting means extending lengthwise of said belt and connecting a plurality of said pairs so that the same constitute a group which is elongated lengthwise of said belt.
Claim 11
Dependent Claim
38 words
An arrangement as defined in claim 1, said impulse generating means and said source of electrical energy being embedded in said belt in electrically conductive connection with said conductors, and forming with the latter an open electric circuit.
Claim 12
Dependent Claim
36 words
An arrangement as defined in claim 1, said impulse generating means, said impulse receiving means and said source of electric energy being arranged adjacent to said belt, and wherein said conductors constitute an open induction loop.
Claim 13
Dependent Claim
26 words
An arrangement as defined in claim 1, wherein said impulse generating means and said impulse receiving means are located at opposite lateral sides of said belt.
Claim 14
Dependent Claim
24 words
An arrangement as defined in claim 1; and further comprising at least one induction-loop antenna provided on and cooperating with said impulse receiving means.
Claim 15
Dependent Claim
52 words
An arrangement as defined in claim 9, said impulse generating means comprising a plurality of impulse generators, and said impulse receiving means comprising a plurality of impulse receivers; and wherein successive generators and successive receivers are spaced lengthwise of said belt by a distance corresponding substantially to the length of said group.
Claim 16
Dependent Claim
37 words
An arrangement as defined in claim 1, said impulse generating means comprising at least two impulse generators, and said impulse receiving means comprising at least two impulse receivers; and wherein said impulse generators operate on different frequencies.
References Cited (Backward Citations)
US3055481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |