US3218793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse timer
Assignee: Hamilton Watch Co
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Filing: 1962-12-26
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Granted: 1965-11-23
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Richard S Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
G; G04; G04C; G04C3/00; G04C3/04; G04C3/06; G04C3/065; G04C3/067; H; H03; H03K; H03K3/00; H03K3/02; H03K3/35; H03K3/351
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A TIMING DEVICE COMPRISING A UNIJUNCTION TRANSISTOR RELAXATION OSCILLATOR, A MECHANICAL OSCILLATORY SYSTEM INCLUDING A BALANCE WHEEL, MAGNETIC MEANS ROTATABLE WITH SAID BALANCE WHEEL, IMPULSE AND TRIGGER COILS LOCATED ADJACENT THE PATH OF MOVEMENT OF SAID MAGNETIC MEANS, MEANS COUPLING SAID IMPULSE COIL TO ONE BASE CONTACT OF SAID TRANSISTOR, AND MEANS COUPLING SAID TRIGGER COIL TO THE OTHER BASE CONTACT OF SAID TRANSISTOR.
Claim 2
Dependent Claim
64 words
A TIMING DEVICE COMPRISING A UNIJUNCTION TRANSISTOR RELAXATION OSCILLATOR, A MECHANICAL OSCILLATORY SYSTEM INCLUDING A BALANCE WHEEL, MAGNETIC MEANS ROTATABLE WITH SAID BALANCE WHEEL, IMPULSE AND TRIGGER COILS LOCATED ADJACENT THE PATH OF MOVEMENT OF SAID MAGNETIC MEANS, MEANS COUPLING SAID IMPULSE COIL TO ONE BASE CONTACT OF SAID TRANSISTOR, AND MEANS COUPLING SAID TRIGGER COIL TO THE OTHER BASE CONTACT OF SAID TRANSISTOR.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |