US3325799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress alarm
Assignee: EDWIA GREINES COHEN
•
Filing: 1964-07-13
•
Granted: 1967-06-13
•
Expires: 1984-07-13
Abstract
No abstract record available.
Inventors
- 👤 Robert L Farris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:57
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/68; A61B5/6887; A61B5/6892; A61B5/103; A61B5/11; A61B5/113; A61B2562/00; A61B2562/02; A61B2562/0261
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN AN ALARM INCLUDING A MATTRESS, A STRAP EXTERIORLY ENCOMPASSING SAID MATTRESS AND HAVING OPPOSITE ENDS TERMINATING AT A SIDE OF SAID MATTRESS, AN ELECTRICAL RESISTANCE TYPE STRAIN GAUGE HAVING ITS OPERATIVE OPPOSITE ENDS RESPECTIVELY ATTACHED TO SAID OPPOSITE ENDS OF SAID STRAP, MEANS PROVIDING AN ELECTRICAL POTENTIAL ACROSS THE RESISTIVE COMPONENT OF SAID STRAIN GAUGE, ELECTRICAL PULSING MEANS FOR PRODUCING A PULSE FOR SUBSTANTIALLY EACH CHANGE IN ELECTRICAL CURRENT FLOWING THROUGH SAID RESISTIVE COMPONENT OF SAID STRAIN GAUGE, AND ALARM MEANS CONNECTED TO SAID PULSING MEANS AND RESPONSIVE TO THE PROLONGED ABSENCE OF ELECTRICAL PULSES OF SAID PULSING MEANS.
Claim 2
Dependent Claim
100 words
IN AN ALARM INCLUDING A MATTRESS, A STRAP EXTERIORLY ENCOMPASSING SAID MATTRESS AND HAVING OPPOSITE ENDS TERMINATING AT A SIDE OF SAID MATTRESS, AN ELECTRICAL RESISTANCE TYPE STRAIN GAUGE HAVING ITS OPERATIVE OPPOSITE ENDS RESPECTIVELY ATTACHED TO SAID OPPOSITE ENDS OF SAID STRAP, MEANS PROVIDING AN ELECTRICAL POTENTIAL ACROSS THE RESISTIVE COMPONENT OF SAID STRAIN GAUGE, ELECTRICAL PULSING MEANS FOR PRODUCING A PULSE FOR SUBSTANTIALLY EACH CHANGE IN ELECTRICAL CURRENT FLOWING THROUGH SAID RESISTIVE COMPONENT OF SAID STRAIN GAUGE, AND ALARM MEANS CONNECTED TO SAID PULSING MEANS AND RESPONSIVE TO THE PROLONGED ABSENCE OF ELECTRICAL PULSES OF SAID PULSING MEANS.
References Cited (Backward Citations)
US3002185A
Cited
US884121A
Cited
US1969554A
Cited
US2260715A
Cited
US2666650A
Cited
US2726380A
Cited
US2787834A
Cited
US2831181A
Cited
US3034341A
Cited
GB919765A
Cited
US3163856A
Cited
US3184961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-12 | 1970-12-12 | 1971-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-12 | 1974-12-12 | 1975-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-12 | 1978-12-12 | 1979-06-13 | $7700.00 | Window Closed / Lapsed |