US3146431A
Expired / Lapsed
US
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Assignee: Dow Chemical Co
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Filing: 1958-07-22
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Granted: 1964-08-25
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Expires: 1978-07-22
Abstract
No abstract record available.
Inventors
- 👤 Ross C Betts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:54
CPC Classifications
B; B65; B65B; B65B57/00; B65B57/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
143 words
APPARATUS FOR SIGNALING THE APPROACHING END OF A SUPPLY OF TEAR TAPE TO A PACKAGING MACHINE COMPRISING A FIRST PAIR OF BRUSHES AND MEANS TO HOLD SAID BRUSHES AGAINST ONE SIDE OF THE TEAR TAPE AS IT IS FED TO A PACKAGING MACHINE, THE SPACING BETWEEN THE BRUSHES BEING ADJUSTABLE TO A GAP ADAPTED TO BE BRIDGED BY A CONDUCTIVE PATCH ADHERED TO THE TEAR TAPE ADJACENT THE FINAL END OF THE TAPE, AN IMPULSE ACTUATED HOLDING RELAY IN SERIES WITH SAID BRUSHES AND A SOURCE OF LOW VOLTAGE, WHEREBY SAID HOLDING RELAY WILL BE ACTUATED BY AN IMPULSE INITIATED BY THE BRIDGING OF THE GAP BETWEEN SAID BRUSHES BY THE CONDUCTIVE PATCH, A TIMER DEVICE IN THE HOLDING CIRCUIT BUT OPENING SAID CIRCUIT AFTER A PRE-DETERMINED LENGTH OF TIME, AND A WARNING DEVICE ACTUATED BY SAID HOLDING CIRCUIT WHILE IT IS CLOSED.
Claim 2
Dependent Claim
143 words
APPARATUS FOR SIGNALING THE APPROACHING END OF A SUPPLY OF TEAR TAPE TO A PACKAGING MACHINE COMPRISING A FIRST PAIR OF BRUSHES AND MEANS TO HOLD SAID BRUSHES AGAINST ONE SIDE OF THE TEAR TAPE AS IT IS FED TO A PACKAGING MACHINE, THE SPACING BETWEEN THE BRUSHES BEING ADJUSTABLE TO A GAP ADAPTED TO BE BRIDGED BY A CONDUCTIVE PATCH ADHERED TO THE TEAR TAPE ADJACENT THE FINAL END OF THE TAPE, AN IMPULSE ACTUATED HOLDING RELAY IN SERIES WITH SAID BRUSHES AND A SOURCE OF LOW VOLTAGE, WHEREBY SAID HOLDING RELAY WILL BE ACTUATED BY AN IMPULSE INITIATED BY THE BRIDGING OF THE GAP BETWEEN SAID BRUSHES BY THE CONDUCTIVE PATCH, A TIMER DEVICE IN THE HOLDING CIRCUIT BUT OPENING SAID CIRCUIT AFTER A PRE-DETERMINED LENGTH OF TIME, AND A WARNING DEVICE ACTUATED BY SAID HOLDING CIRCUIT WHILE IT IS CLOSED.
Claim 3
Dependent Claim
54 words
APPARATUS AS DEFINED IN CLAIM 1, INCLUDING A SECOND PAIR OF BRUSHES CONNECTED IN PARALLEL WITH SAID FIRST PAIR AND ADAPTED TO ENGAGE THE SIDE OF SAID TAPE OPPOSITE SAID FIRST PAIR OF BRUSHES WHEREBY SAID WARNING DEVICE WILL OPERATE REGARDLESS OF POSSIBLE INVERSION OF THE SIDE OF THE TAPE CARRYING THE CONDUCTIVE PATCH.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |