US3272500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for guiding postal articles, forms or the like
Assignee: Government of Netherlands
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Filing: 1961-01-23
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Granted: 1966-09-13
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Christiaan Johannes Van Dalen
- 👤 Jong Cornelis Leendert De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:10
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/52; B65H3/5246; B07; B07C; B07C1/00; B07C1/02; B07C1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
DEVICE FOR FEEDING OUT, ONE BY ONE, SHEETS (Z) OF LAMINAR MATERIAL, WHICH TOGETHER FORM A STACK, SAID DEVICE COMPRISING A POSITIVELY DRIVEN CONVEYOR MEMBER AND A MOVEABLE FRICTION MEMBER (F OR 3) COOPERATING UNDER PRESSURE WITH THE CONVEYOR MEMBER (S), THE COOPERATING PARTS OF WHICH MEMBERS MOVE ALONG CLOSED TRACKS AND BETWEEN WHICH MEMBERS THE SHEETS ARE FED OUT, THE DIRECTION OF MOVEMENT OF THE FRICTION MEMBER BEING DEPENDENT ON THE POSSIBLE PRESENCE BETWEEN THE FRICTION MEMBER AND THE CONVEYOR MEMBER OF AT LEAST TWO SUPERIMPOSED SHEETS OF LAMINAR MATERIAL (SEE FIG.4), WHILE THE FRICTION BETWEEN THE FRICTION MEMBER AND ONE OF THE SHEETS AS WELL AS THE FRICTION BETWEEN THE CONVEYOR MEMBER AND ONE OF THE SHEETS IS GREATER THAN THE FRICTION BETWEEN TWO OF THE SHEETS, CONTINUOUSLY OPERATING DRIVING MEANS 1, 2 FOR THE FRICTION MEMBER, INCLUDING DRIVING MEMBERS AND A SLIP CLUTCH 5 BETWEEN THE DRIVING MEMBERS AND THE FRICTION MEMBER, CONTINUOUSLY TENDING TO DRIVE THE FRICTION MEMBER VIA THE SLIP CLUTCH, WITH A FORCE WHICH IS ALWAYS SUFFICIENT TO OVERCOME THE FRICTION BETWEEN TWO OF THE SHEETS OF LAMINAR MATERIAL, IN A DIRECTION OPPOSITE TO THE DIRECTION IN WHICH THE FRICTION MEMBER IS INFLUENCED BY THE CONVEYOR MEMBER.
Claim 2
Dependent Claim
203 words
DEVICE FOR FEEDING OUT, ONE BY ONE, SHEETS (Z) OF LAMINAR MATERIAL, WHICH TOGETHER FORM A STACK, SAID DEVICE COMPRISING A POSITIVELY DRIVEN CONVEYOR MEMBER AND A MOVEABLE FRICTION MEMBER (F OR 3) COOPERATING UNDER PRESSURE WITH THE CONVEYOR MEMBER (S), THE COOPERATING PARTS OF WHICH MEMBERS MOVE ALONG CLOSED TRACKS AND BETWEEN WHICH MEMBERS THE SHEETS ARE FED OUT, THE DIRECTION OF MOVEMENT OF THE FRICTION MEMBER BEING DEPENDENT ON THE POSSIBLE PRESENCE BETWEEN THE FRICTION MEMBER AND THE CONVEYOR MEMBER OF AT LEAST TWO SUPERIMPOSED SHEETS OF LAMINAR MATERIAL (SEE FIG.4), WHILE THE FRICTION BETWEEN THE FRICTION MEMBER AND ONE OF THE SHEETS AS WELL AS THE FRICTION BETWEEN THE CONVEYOR MEMBER AND ONE OF THE SHEETS IS GREATER THAN THE FRICTION BETWEEN TWO OF THE SHEETS, CONTINUOUSLY OPERATING DRIVING MEANS 1, 2 FOR THE FRICTION MEMBER, INCLUDING DRIVING MEMBERS AND A SLIP CLUTCH 5 BETWEEN THE DRIVING MEMBERS AND THE FRICTION MEMBER, CONTINUOUSLY TENDING TO DRIVE THE FRICTION MEMBER VIA THE SLIP CLUTCH, WITH A FORCE WHICH IS ALWAYS SUFFICIENT TO OVERCOME THE FRICTION BETWEEN TWO OF THE SHEETS OF LAMINAR MATERIAL, IN A DIRECTION OPPOSITE TO THE DIRECTION IN WHICH THE FRICTION MEMBER IS INFLUENCED BY THE CONVEYOR MEMBER.
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) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |