US3122001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety device for refrigeration system
Assignee: IAN F LOCKHART
•
Filing: 1962-10-25
•
Granted: 1964-02-25
•
Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 Freeman L Pritchett
- 👤 Billy L Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:39
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/005; F25B31/00; F25B31/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A REFRIGERATION SYSTEM, A SAFETY DEVICE COMPRISING MEANS PROVIDING AN ENCLOSURE THROUGH WHICH THE REFRIGERANT IN SAID SYSTEM FLOWS, A HOMOGENEOUS AND RIGID ELEMENT IN SAID ENCLOSURE DISSOLVABLE IN ACIDS, A SPRING ACTUATED SWITCH, SAID ELEMENT ENGAGING SAID SWITCH FOR HOLDING SAID SWITCH AGAINST THE ACTUATION THEREOF, SAID ELEMENT BEING RESPONSIVE TO AN ACID IN SAID ENCLOSURE TO RELEASE SAID SWITCH FOR THE ACTUATION THEREOF.
Claim 2
Dependent Claim
66 words
IN A REFRIGERATION SYSTEM, A SAFETY DEVICE COMPRISING MEANS PROVIDING AN ENCLOSURE THROUGH WHICH THE REFRIGERANT IN SAID SYSTEM FLOWS, A HOMOGENEOUS AND RIGID ELEMENT IN SAID ENCLOSURE DISSOLVABLE IN ACIDS, A SPRING ACTUATED SWITCH, SAID ELEMENT ENGAGING SAID SWITCH FOR HOLDING SAID SWITCH AGAINST THE ACTUATION THEREOF, SAID ELEMENT BEING RESPONSIVE TO AN ACID IN SAID ENCLOSURE TO RELEASE SAID SWITCH FOR THE ACTUATION THEREOF.
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) | 1967-02-24 | 1967-08-26 | 1968-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-24 | 1971-08-26 | 1972-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-24 | 1975-08-26 | 1976-02-25 | $7700.00 | Window Closed / Lapsed |