Patent US3260898A successfully refreshed from Google Patents.
US3260898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-hand electric control for machines
Assignee: Niagara Machine and Tool Works
•
Filing: 1963-06-07
•
Granted: 1966-07-12
•
Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Clarence O Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:09
CPC Classifications
F; F16; F16P; F16P3/00; F16P3/18; F16P3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A TWO-HAND TRIPPING CONTROL FOR CYCLIC ACTUATION OF MACHINERY COMPRISING A MACHINE ACTUATING SOLENOID WINDING AND MEANS REQUIRING INTERMITTENT ENERGIZATION THEREOF FOR EFFECTING SUCCESSIVE CYCLES WITH PREDETERMINED TIME INTERVALS BETWEEN SUCH INTERMITTENT ENERGIZATIONS, SAID MEANS COMPRISING A SILICON CONTROLLED RECTIFIER IN SERIES WITH SAID WINDING AND HAVING A GATE TERMINAL, AN OPERATING CIRCUIT FOR APPLYING POTENTIAL TO SAID GATE TERMINAL TO RENDER SAID RECTIFIER OPERATIVE TO ENERGIZE SAID SOLENOID WINDING, A PAIR OF NORMALLY CLOSED SWITCHES AND A CAPACITOR CONNECTED IN SERIES IN SAID CIRCUIT FOR APPLYING A POSITIVE CHARGE TO ONE SIDE OF SAID CAPACITOR, A CONDUCTOR
Claim 2
Dependent Claim
98 words
A TWO-HAND TRIPPING CONTROL FOR CYCLIC ACTUATION OF MACHINERY COMPRISING A MACHINE ACTUATING SOLENOID WINDING AND MEANS REQUIRING INTERMITTENT ENERGIZATION THEREOF FOR EFFECTING SUCCESSIVE CYCLES WITH PREDETERMINED TIME INTERVALS BETWEEN SUCH INTERMITTENT ENERGIZATIONS, SAID MEANS COMPRISING A SILICON CONTROLLED RECTIFIER IN SERIES WITH SAID WINDING AND HAVING A GATE TERMINAL, AN OPERATING CIRCUIT FOR APPLYING POTENTIAL TO SAID GATE TERMINAL TO RENDER SAID RECTIFIER OPERATIVE TO ENERGIZE SAID SOLENOID WINDING, A PAIR OF NORMALLY CLOSED SWITCHES AND A CAPACITOR CONNECTED IN SERIES IN SAID CIRCUIT FOR APPLYING A POSITIVE CHARGE TO ONE SIDE OF SAID CAPACITOR, A CONDUCTOR
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |