US2756305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time delay switch
Assignee: Phillips Petroleum Co
•
Filing: 1953-06-22
•
Granted: 1956-07-24
•
Expires: 1973-06-22
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Broerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:18
CPC Classifications
H; H01; H01H; H01H37/00; H01H37/02; H01H37/62; H01H37/12; H01H61/00; H01H61/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
A TIME DELAY SWITCH COMPRISING A THERMOSTATIC SUPPORT ELEMENT, A FIRST ELECTRICAL CONTACT MOUNTED ON SAID THERMOSTATIC ELEMENT, MEANS SEPARATELY SUPPORTED AND SPACED FROM SAID THERMOSTATIC ELEMENT FOR APPLYING HEAT TO THE LATTER TO CAUSE DEFLECTION THEREOF AND MOVEMENT OF SAID FIRST CONTACT, A SECOND SUPPORT ELEMENT, A SECOND ELECTRICAL CONTACT MOUNTED ON SAID SECOND SUPPORT ELEMENT, SAID SECOND SUPPORT ELEMENT BEING POSITIONED SUCH THAT SAID FIRST AND SECOND CONTACTS ARE ADAPTED TO COME INTO ENGAGEMENT, A BODY OF MAGNETIC MATERIAL SECURED TO ONE OF SAID SUPPORT ELEMENTS, A MAGNET MOUNTED ADJACENT SAID BODY OF MAGNETIC MATERIAL WHEREBY SAID MAGNET EXERTS A FORCE ON SAID BODY, AND MEANS TO VARY THE POSITION OF SAID MAGNET WITH RESPECT TO SAID BODY OF MAGNETIC MATERIAL AND THEREBY THE FORCE EXERTED ON SAID BODY OF MAGNETIC MATERIAL BY SAID MAGNET.
Claim 2
Dependent Claim
137 words
A TIME DELAY SWITCH COMPRISING A THERMOSTATIC SUPPORT ELEMENT, A FIRST ELECTRICAL CONTACT MOUNTED ON SAID THERMOSTATIC ELEMENT, MEANS SEPARATELY SUPPORTED AND SPACED FROM SAID THERMOSTATIC ELEMENT FOR APPLYING HEAT TO THE LATTER TO CAUSE DEFLECTION THEREOF AND MOVEMENT OF SAID FIRST CONTACT, A SECOND SUPPORT ELEMENT, A SECOND ELECTRICAL CONTACT MOUNTED ON SAID SECOND SUPPORT ELEMENT, SAID SECOND SUPPORT ELEMENT BEING POSITIONED SUCH THAT SAID FIRST AND SECOND CONTACTS ARE ADAPTED TO COME INTO ENGAGEMENT, A BODY OF MAGNETIC MATERIAL SECURED TO ONE OF SAID SUPPORT ELEMENTS, A MAGNET MOUNTED ADJACENT SAID BODY OF MAGNETIC MATERIAL WHEREBY SAID MAGNET EXERTS A FORCE ON SAID BODY, AND MEANS TO VARY THE POSITION OF SAID MAGNET WITH RESPECT TO SAID BODY OF MAGNETIC MATERIAL AND THEREBY THE FORCE EXERTED ON SAID BODY OF MAGNETIC MATERIAL BY SAID MAGNET.
References Cited (Backward Citations)
US1621056A
Cited
US2180701A
Cited
US2149853A
Cited
US2272976A
Cited
US2272977A
Cited
US2437488A
Cited
US2598081A
Cited
US2691129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-24 | 1960-01-23 | 1960-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-24 | 1964-01-23 | 1964-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-24 | 1968-01-23 | 1968-07-24 | $7700.00 | Window Closed / Lapsed |