US3391627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shutter brake
Assignee: Pentacon GmbH Foto und Feinwerktechnik
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Filing: 1966-04-15
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Granted: 1968-07-09
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Expires: 1986-04-15
Abstract
No abstract record available.
Inventors
- 👤 Leuschke Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:27
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/08; G03B9/28; G03B9/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
APPARATUS FOR BRAKING THE TWO CURTAINS OF CURTAINTYPE SHUTTERS AT THE END OF THEIR RUNNING OFF, WHEREIN THE BRAKE ARRANGEMENT CONSISTS OF A DOMED LEAF SPRING FAST WITH THE HOUSING AND OF A PIVOTABLY MOUNTED BRAKE SHOE RESTING UNDER SLIGHT FORCE ENGAGEMENT THEREON, THE BRAKE SURFACE FORMED BY THE LEAF SPRING AND THE BRAKE SHOE INCLUDING AN ACUTE ANGLE, THE OPENING OF WHICH LIES IN THE RUNNING-OFF PATH OF A PART MOVED POSITIVELY IN THE RUNNINGOFF OF THE CURTAINS, WHICH PART COMES TO A HALT AFTER RUNNING THROUGH THE BRAKE ARRANGEMENT, WHILE IN THE TRANSFERENCE OF THE CURTAINS INTO THE COCKED POSITION THE BRAKE SHOE IS PIVOTED BY THE SAID PART OUT OF ITS RUNNING OFF PATH.
Claim 2
Dependent Claim
117 words
APPARATUS FOR BRAKING THE TWO CURTAINS OF CURTAINTYPE SHUTTERS AT THE END OF THEIR RUNNING OFF, WHEREIN THE BRAKE ARRANGEMENT CONSISTS OF A DOMED LEAF SPRING FAST WITH THE HOUSING AND OF A PIVOTABLY MOUNTED BRAKE SHOE RESTING UNDER SLIGHT FORCE ENGAGEMENT THEREON, THE BRAKE SURFACE FORMED BY THE LEAF SPRING AND THE BRAKE SHOE INCLUDING AN ACUTE ANGLE, THE OPENING OF WHICH LIES IN THE RUNNING-OFF PATH OF A PART MOVED POSITIVELY IN THE RUNNINGOFF OF THE CURTAINS, WHICH PART COMES TO A HALT AFTER RUNNING THROUGH THE BRAKE ARRANGEMENT, WHILE IN THE TRANSFERENCE OF THE CURTAINS INTO THE COCKED POSITION THE BRAKE SHOE IS PIVOTED BY THE SAID PART OUT OF ITS RUNNING OFF PATH.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |