US3597756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Belt fault detection device
Assignee: Individual
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Filing: 1969-03-21
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Granted: 1971-08-03
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Expires: 1989-03-21
Abstract
Abstract Pairs of conductor strips are positioned adjacent a moving conveyor belt for carrying materials. The flexible conductor strips of each pair are spaced to form a plurality of normally open switches in an electric circuit adapted to produce an electric signal. The strips are adjustably positioned for engagement by a protrusion in the conveyor belt whereby one of the flexible conductors of a pair is deflected into engagement with the other to close the electric circuit and produce the electric signal.
Inventors
- 👤 William G Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:13
CPC Classifications
G; G01; G01N; G01N19/00; G01N19/08; B; B65; B65G; B65G43/00; B65G43/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
184 words
In combination a movable member for handling materials having oppositely facing first and second surfaces, said first surface carrying a material; electrical circuit means; signal means connected in said circuit means to be activated when said electrical circuit is completed; and detecting means connected in said electrical circuit means and operative to detect protrusions in said second surface indicating a defect in said movable member, said detecting means comprising first and second conductor members spaced Apart to normally maintain said electrical circuit open, said first conductor member constructed from a material having a low modulus of elasticity and arranged so as to remain in a deflected position after the application of a deflecting force thereto, support means holding said conductor members adjacent said second surface for engagement by a protrusion in said second surface as said movable member passes said conductor members to that protrusion deflects said first conductor member into contact with said second conductor member thereby activating said signal means through said first and second members, said first conductor member remaining in a deflected position after said protrusion passes said conductor members.
Claim 2
Dependent Claim
184 words
In combination a movable member for handling materials having oppositely facing first and second surfaces, said first surface carrying a material; electrical circuit means; signal means connected in said circuit means to be activated when said electrical circuit is completed; and detecting means connected in said electrical circuit means and operative to detect protrusions in said second surface indicating a defect in said movable member, said detecting means comprising first and second conductor members spaced Apart to normally maintain said electrical circuit open, said first conductor member constructed from a material having a low modulus of elasticity and arranged so as to remain in a deflected position after the application of a deflecting force thereto, support means holding said conductor members adjacent said second surface for engagement by a protrusion in said second surface as said movable member passes said conductor members to that protrusion deflects said first conductor member into contact with said second conductor member thereby activating said signal means through said first and second members, said first conductor member remaining in a deflected position after said protrusion passes said conductor members.
Claim 3
Dependent Claim
40 words
The combination according to claim 1 wherein said first conductor member according to claim 1 wherein said first conductor member is arranged in front of said second conductor member with respect to the direction of movement of said movable member.
Claim 4
Dependent Claim
35 words
The combination according to claim 2 wherein said conductor members extend from said support means towards said second surface and the extended ends of both first and second conductor members are engaged by said protrusion.
Claim 5
Dependent Claim
21 words
The combination according to claim 3 including means for adjusting the position of said conductor members relative to said second surface.
Claim 6
Dependent Claim
13 words
The combination according to claim 4 wherein said second conductor member is resilient.
Claim 7
Dependent Claim
50 words
The combination according to claim 5 including a plurality of said detector means spaced along the width of said movable member and connected in said electrical circuit means so that the engagement of said first and second conductor members of any one of said detecting means activates said signal means.
Claim 8
Dependent Claim
65 words
The combination according to claim 5 including at least two of said detecting means spaced and substantially aligned along an axis parallel to the direction of travel of said movable member and connected in said electrical circuit means so that said first and second conductor members of more than one of said detecting means so aligned must be engaged before said signal means is activated.
Claim 9
Dependent Claim
36 words
The combination according to claim 6 wherein said movable member is a conveyor belt supported on a plurality of rollers and said detecting means is located in the vicinity of at least one of said rollers.
Claim 10
Dependent Claim
36 words
The combination according to claim 7 wherein said movable member is a conveyor belt supported on a plurality of rollers and said detecting means is located in the vicinity of at least one of said rollers.
Claim 11
Dependent Claim
147 words
In combination a movable member for handling materials, and electrical means for responding to abnormal protrusions from said movable member, said electrical means including detecting means and said detecting means comprising a first conductor member constructed from a material having a low modulus of elasticity, a second conductor member, and means supporting said first conductor member in the vicinity of said movable member for engagement by said abnormal protrusions, said support means also supporting said first conductor member in a normal position relative to said second conductor member and so that engagement of said first conductor member by said abnormal protrusion deflects and moves said first conductor member relative to said second conductor member to change the electrical state of said electrical means and thereby indicate the presence of said abnormal protrusion, said first conductor member remaining in a deflected position after engagement by said abnormal protrusion.
Claim 12
Dependent Claim
147 words
In combination a movable member for handling materials, and electrical means for responding to abnormal protrusions from said movable member, said electrical means including detecting means and said detecting means comprising a first conductor member constructed from a material having a low modulus of elasticity, a second conductor member, and means supporting said first conductor member in the vicinity of said movable member for engagement by said abnormal protrusions, said support means also supporting said first conductor member in a normal position relative to said second conductor member and so that engagement of said first conductor member by said abnormal protrusion deflects and moves said first conductor member relative to said second conductor member to change the electrical state of said electrical means and thereby indicate the presence of said abnormal protrusion, said first conductor member remaining in a deflected position after engagement by said abnormal protrusion.
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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |