US3343151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigeration warning system
Assignee: Doosan Bobcat North America Inc
•
Filing: 1964-07-13
•
Granted: 1967-09-19
•
Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 John H Brown
- 👤 James F Kinney
- 👤 Perez Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:39
CPC Classifications
G; G01; G01K; G01K13/00; F; F25; F25D; F25D29/00; F25D29/008; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
109 words
APPARATUS FOR WARNING OF THE APPROACH OF A DELETERIOUS TEMPERATURE CONDITION IN A PRODUCT SUBJECT TO DETERIORATION AT A GIVEN TEMPERATURE AND SUBJECTED TO A PROTECTIVE TEMPERATURE FOR PREVENTION OF SUCH DETERIORATION, COMPRISING WARNING MEANS, AN ELECTRICAL CIRCUIT FOR ACTUATING SAID WARNING MEANS, A TEMPERATURE-SENSITIVE DEVICE INCLUDING A TEMPERATURE-RESPONSIVE ELEMENT AND A BODY OF MATERIAL SURROUNDING SAID ELEMENT AND HAVING A TIME-TEMPERATURE CONSTANT SUBSTANTIALLY THE SAME AS THAT OF SAID PRODUCT, SAID DEVICE BEING DISPOSED FOR SUBJECTION TO THE SAME AMBIENT TEMPERATURE AS THE PRODUCT, THE ELEMENT BEING RESPONSIVE TO A TEMPERATURE BETWEEN SAID GIVEN AND PROTECTIVE TEMPERATURES, AND MEANS CONNECTING THE DEVICE IN CONTROLLING RELATION TO SAID CIRCUIT,
References Cited (Backward Citations)
US2585086A
Cited
US2799758A
Cited
US2741099A
Cited
US2932971A
Cited
US2923786A
Cited
US3199348A
Cited
US3100383A
Cited
US3175178A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |