US3258563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trip-free safety switch
Assignee: Honeywell Inc
•
Filing: 1964-05-12
•
Granted: 1966-06-28
•
Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Horst W Landau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:29
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/12; H01H1/36; H01H1/40; H01H1/403; H01H71/00; H01H71/10; H01H71/12; H01H71/46; H01H73/00; H01H73/22; H01H73/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
236 words
IN A SAFETY SWITCH FOR PROVIDING "TRIP FREE" ACTION, A BASE PROVIDING A CHAMBER WITH AN OPEN SIDE, A COVER FOR SAID BASE, A PAIR OF ELECTRICAL CURRENT CARRYING CONTACTS MOUNTED IN ONE SIDE OF SAID CHAMBER TO PROTRUDE OUTSIDE SAID BASE FOR PROVIDING ELECTRICAL CIRCUIT CONNECTIONS AND TO PROTRUDE IN A PARALLEL SPACED RELATIONSHIP INTO SAID CHAMBER, A MOVABLE SWITCH CONTACT CARRYING MEMBER SLIDEABLY CONNECTED TO SAID CONTACTS SO SAID MEMBER CAN MOVE BETWEEN A FIRST AND SECOND POSITION, A MANUAL OPERATING BUTTON EXTENDING THROUGH ONE SIDE OF SAID BASE INTO SAID CHAMBER AND ADAPTED TO MOVE SAID MEMBER FROM SAID FIRST TO SAID SECOND POSITION, A BIMETAL LATCH MEANS MOUNTED IN SAID CHAMBER, AN ELECTRICAL HEATER FOR HEATING SAID BIMETAL, A PROJECTION ON SAID MEMBER, SAID PROJECTION BEING RECEIVED BY SAID LATCH MEANS WHEN SAID MEMBER IS IN SAID SECOND POSITION AND SAID BIMETAL IS COLD, A SPRING BIASING SAID MEMBER FROM SAID SECOND TO SAID FIRST POSITION WHEREBY UPON SAID HEATER HEATING SAID BIMETAL SAID LATCH MEANS IS TRIPPED AND SAID MEMBER MOVES TO SAID FIRST POSITION, A SWTICH MEANS CONTAINED IN SAID MEMBER TO ENGAGE SAID BARS WHEN SAID MEMBER IS MOVED TO SAID SECOND POSITION, SAID SWITCH MEANS COMPRISING A U-SHAPED RESILIENT BLADE WHICH IS NORMALLY HELD IN SAID MEMBER BETWEEN A PAIR OF PROJECTIONS TO HAVE FREE EXTREMITIES OF SAID BLADE EXTENDING APART TO CONTACT SAID BARS THEN SAID MEM-
Claim 2
Dependent Claim
236 words
IN A SAFETY SWITCH FOR PROVIDING "TRIP FREE" ACTION, A BASE PROVIDING A CHAMBER WITH AN OPEN SIDE, A COVER FOR SAID BASE, A PAIR OF ELECTRICAL CURRENT CARRYING CONTACTS MOUNTED IN ONE SIDE OF SAID CHAMBER TO PROTRUDE OUTSIDE SAID BASE FOR PROVIDING ELECTRICAL CIRCUIT CONNECTIONS AND TO PROTRUDE IN A PARALLEL SPACED RELATIONSHIP INTO SAID CHAMBER, A MOVABLE SWITCH CONTACT CARRYING MEMBER SLIDEABLY CONNECTED TO SAID CONTACTS SO SAID MEMBER CAN MOVE BETWEEN A FIRST AND SECOND POSITION, A MANUAL OPERATING BUTTON EXTENDING THROUGH ONE SIDE OF SAID BASE INTO SAID CHAMBER AND ADAPTED TO MOVE SAID MEMBER FROM SAID FIRST TO SAID SECOND POSITION, A BIMETAL LATCH MEANS MOUNTED IN SAID CHAMBER, AN ELECTRICAL HEATER FOR HEATING SAID BIMETAL, A PROJECTION ON SAID MEMBER, SAID PROJECTION BEING RECEIVED BY SAID LATCH MEANS WHEN SAID MEMBER IS IN SAID SECOND POSITION AND SAID BIMETAL IS COLD, A SPRING BIASING SAID MEMBER FROM SAID SECOND TO SAID FIRST POSITION WHEREBY UPON SAID HEATER HEATING SAID BIMETAL SAID LATCH MEANS IS TRIPPED AND SAID MEMBER MOVES TO SAID FIRST POSITION, A SWTICH MEANS CONTAINED IN SAID MEMBER TO ENGAGE SAID BARS WHEN SAID MEMBER IS MOVED TO SAID SECOND POSITION, SAID SWITCH MEANS COMPRISING A U-SHAPED RESILIENT BLADE WHICH IS NORMALLY HELD IN SAID MEMBER BETWEEN A PAIR OF PROJECTIONS TO HAVE FREE EXTREMITIES OF SAID BLADE EXTENDING APART TO CONTACT SAID BARS THEN SAID MEM-
References Cited (Backward Citations)
US303579A
Cited
US1408097A
Cited
US1859981A
Cited
DE587373C
Cited
US2171895A
Cited
GB513143A
Cited
US2420880A
Cited
US2541679A
Cited
US2798918A
Cited
US2842641A
Cited
US2938985A
Cited
US3104300A
Cited
US3171919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |