Patent DE687108C successfully refreshed from Google Patents.
US3105158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Step counter having storage capacitor discharge through tranistor driven to saturation with diode regenerative feedback
Assignee: Daystrom Inc
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Filing: 1960-06-29
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Granted: 1963-09-24
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Expires: 1980-06-29
Abstract
No abstract record available.
Inventors
- 👤 Basil B Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/18; H03K25/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN A STEP COUNTER COMPRISING A CAPACITIVE STORAGE DEVICE, MEANS ADAPTED TO RECEIVE A SERIES OF INPUT PULSE SIGNALS TO BE COUNTED, MEANS RESPONSIVE TO SAID INPUT SIGNALS TO CHARGE SAID STORAGE DEVICE BY DISCRETE INCREMENTS AND MEANS TO DETECT WHEN THE CHARGE ACQUIRED BY SAID STORAGE DEVICE HAS REACHED A PREDETERMINED VALUE, THE COMBINATION OF A TRANSISTOR HAVING AN INPUT CIRCUIT AND AN EMITTER-TO-COLLECTOR CIRCUIT, SAID EMITTER-TO-COLLECTOR CIRCUIT BEING SERIALLY AND DIRECTLY CONNECTED TO SAID STORAGE DEVICE, THEREBY TO PROVIDE A DISCHARGE PATH FOR SAID STORAGE DEVICE, SWITCHING MEANS COUPLED TO SAID INPUT CIRCUIT AND RESPONSIVE TO SAID DETECTING MEANS FOR SWITCHING SAID TRANSISTOR FROM A STATE OF NON-CONDUCTION TO A
Claim 2
Dependent Claim
112 words
IN A STEP COUNTER COMPRISING A CAPACITIVE STORAGE DEVICE, MEANS ADAPTED TO RECEIVE A SERIES OF INPUT PULSE SIGNALS TO BE COUNTED, MEANS RESPONSIVE TO SAID INPUT SIGNALS TO CHARGE SAID STORAGE DEVICE BY DISCRETE INCREMENTS AND MEANS TO DETECT WHEN THE CHARGE ACQUIRED BY SAID STORAGE DEVICE HAS REACHED A PREDETERMINED VALUE, THE COMBINATION OF A TRANSISTOR HAVING AN INPUT CIRCUIT AND AN EMITTER-TO-COLLECTOR CIRCUIT, SAID EMITTER-TO-COLLECTOR CIRCUIT BEING SERIALLY AND DIRECTLY CONNECTED TO SAID STORAGE DEVICE, THEREBY TO PROVIDE A DISCHARGE PATH FOR SAID STORAGE DEVICE, SWITCHING MEANS COUPLED TO SAID INPUT CIRCUIT AND RESPONSIVE TO SAID DETECTING MEANS FOR SWITCHING SAID TRANSISTOR FROM A STATE OF NON-CONDUCTION TO A
References Cited (Backward Citations)
US2866104A
Cited
US2953694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |