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Patent US3289904A successfully refreshed from Google Patents.
US3289904A
Expired / Lapsed
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Web feeding device having magnetic hold down means
Assignee: Potter Instrument Co Inc
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Filing: 1965-06-01
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Granted: 1966-12-06
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Expires: 1985-06-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Foley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:41
CPC Classifications
B; B41; B41J; B41J11/00; B41J11/26; B41J11/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A WEB FEEDING DEVICE FOR FEEDING SHEET MATERIAL, SAID DEVICE BEING OF THE TYPE HAVING A PLURALITY OF PINS SPACED TO REGISTER WITH SIMILARLY SPACED APERTURES IN SHEET MATERIAL TO BE FED AND PROJECTING FROM A PIN CARRIER MEMBER, A HOLD-DOWN DEVICE COMPRISING: A CHANNEL MEMBER OF LOW FRICTION MATERIAL HAVING A PAIR OF WALLS SPACED APART BY A DISTANCE SLIGHTLY GREATER THAN THE LATERAL DIMENSION OF THE PINS; AND MAGNETIC MEANS FOR RETAINING SAID CHANNEL MEMBER IN A POSITION WHEREIN THE WALLS STRADDLE THE PINS AND HOLD THE SHEET MATERIAL AGAINST THE PIN CARRIER MEMBER.
Claim 2
Dependent Claim
97 words
IN A WEB FEEDING DEVICE FOR FEEDING SHEET MATERIAL, SAID DEVICE BEING OF THE TYPE HAVING A PLURALITY OF PINS SPACED TO REGISTER WITH SIMILARLY SPACED APERTURES IN SHEET MATERIAL TO BE FED AND PROJECTING FROM A PIN CARRIER MEMBER, A HOLD-DOWN DEVICE COMPRISING: A CHANNEL MEMBER OF LOW FRICTION MATERIAL HAVING A PAIR OF WALLS SPACED APART BY A DISTANCE SLIGHTLY GREATER THAN THE LATERAL DIMENSION OF THE PINS; AND MAGNETIC MEANS FOR RETAINING SAID CHANNEL MEMBER IN A POSITION WHEREIN THE WALLS STRADDLE THE PINS AND HOLD THE SHEET MATERIAL AGAINST THE PIN CARRIER MEMBER.
References Cited (Backward Citations)
US3114490A
Cited
US3219245A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |