Patent US3276280A successfully refreshed from Google Patents.
US3276280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gear mechanism with a stepwise variable gearing ratio
Assignee: Zeuthen and Aagaard AS
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Filing: 1964-10-05
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Granted: 1966-10-04
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Expires: 1984-10-05
Abstract
No abstract record available.
Inventors
- 👤 Zeuthen Karl Gustav
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:21
CPC Classifications
F; F16; F16H; F16H9/00; F16H9/02; F16H9/04; F16H9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A GEAR MECHANISM COMPRISING TWO PARALLEL SHAFTS EACH PROVIDED WITH A STEPPED PULLEY, A BELT INTERCONNECTING SAID PULLEYS MEANS FOR SHIFTING SAID BELT BETWEEN THE STEPS OF THE PULLEYS FOR VARING THE GEARING RATIO OF THE GEAR MECHANISM, SAID STEPPED PULLEYS COMPRISING BETWEEN EVERY TWO ADAJCENT STEPS A TRANSITION ZONE HAVING A WIDTH ADAPTED TO THE BELT AND HAVING ON ONE PART OF THE CIRCUMFERENCE A CYLINDRICAL SHAPE WITH A RADIUS CORRESPONDING TO THE ADJACENT HIGHER STEP AND ON SUBSTANTIALLY THE REMAINING PART OF THE CIRCUMFERENCE A RADIUS CORRESPONDING TO THE ADJACENT LOWER STEP, SAID SHIFTING MEANS BEING ARRANGED TO ACT MOMENTANEOUSLY ON SAID RUNNING BELT, DURING OPERATION TO MAKE SAID RUNNING BELT SHIFT IN A JUMP-LIKE MANNER FROM A LOWER TO A HIGHER STEP.
Claim 2
Dependent Claim
125 words
A GEAR MECHANISM COMPRISING TWO PARALLEL SHAFTS EACH PROVIDED WITH A STEPPED PULLEY, A BELT INTERCONNECTING SAID PULLEYS MEANS FOR SHIFTING SAID BELT BETWEEN THE STEPS OF THE PULLEYS FOR VARING THE GEARING RATIO OF THE GEAR MECHANISM, SAID STEPPED PULLEYS COMPRISING BETWEEN EVERY TWO ADAJCENT STEPS A TRANSITION ZONE HAVING A WIDTH ADAPTED TO THE BELT AND HAVING ON ONE PART OF THE CIRCUMFERENCE A CYLINDRICAL SHAPE WITH A RADIUS CORRESPONDING TO THE ADJACENT HIGHER STEP AND ON SUBSTANTIALLY THE REMAINING PART OF THE CIRCUMFERENCE A RADIUS CORRESPONDING TO THE ADJACENT LOWER STEP, SAID SHIFTING MEANS BEING ARRANGED TO ACT MOMENTANEOUSLY ON SAID RUNNING BELT, DURING OPERATION TO MAKE SAID RUNNING BELT SHIFT IN A JUMP-LIKE MANNER FROM A LOWER TO A HIGHER STEP.
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |