Patent US3338048A successfully refreshed from Google Patents.
US3338048A
Expired / Lapsed
US
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Variable inertia drive mechanism
Assignee: Hamilton Watch Co
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Filing: 1964-04-01
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Granted: 1967-08-29
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Expires: 1984-04-01
Abstract
No abstract record available.
Inventors
- 👤 Philip A Stnder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:15
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2154; Y10T74/2158
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
A VARIBLE INERTIA DRIVE SYSTEM COMPRISING A MASS MOUNTED FOR ROTARY OSCILLATIONS, RESILIENT MEANS COUPLED TO SAID MASS FOR SUSTAINING OSCILLATIONS OF SAID MASS, AND MEANS COUPLED TO SAID MASS FOR CHANGING ITS ROTARY MOMENT OF INERTIA AT TWO PREDETERMINED SPACED POINTS IN A CYCLE OF OSCILLATION, SAID MEANS DECREASING THE ROTARY MOMENT OF INERTIA OF SAID MASS AT A FIRST POINT AND INCREASING THE ROTARY MOVEMENT OF INERTIA OF SAID MASS AT A SECOND POINT OF LESSER VELOCITY THAN SAID FIRST POINT WHEREBY NET KINETIC ENERGY IS IMPARTED TO SAID MASS.
Claim 2
Dependent Claim
92 words
A VARIBLE INERTIA DRIVE SYSTEM COMPRISING A MASS MOUNTED FOR ROTARY OSCILLATIONS, RESILIENT MEANS COUPLED TO SAID MASS FOR SUSTAINING OSCILLATIONS OF SAID MASS, AND MEANS COUPLED TO SAID MASS FOR CHANGING ITS ROTARY MOMENT OF INERTIA AT TWO PREDETERMINED SPACED POINTS IN A CYCLE OF OSCILLATION, SAID MEANS DECREASING THE ROTARY MOMENT OF INERTIA OF SAID MASS AT A FIRST POINT AND INCREASING THE ROTARY MOVEMENT OF INERTIA OF SAID MASS AT A SECOND POINT OF LESSER VELOCITY THAN SAID FIRST POINT WHEREBY NET KINETIC ENERGY IS IMPARTED TO SAID MASS.
Claim 3
Dependent Claim
29 words
A DRIVE MECHANISM ACCORDING TO CLAIM 17 WHEREIN SAID MASS COMPRISES A BALANCE WHEEL OF A TIMEPIECE, AND SAID RESILIENT MEANS IS A SPRING COUPLED TO SAID BALANCE WHEEL.
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) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |